Laudanum

Laudanum is a tincture of opium containing approximately 10% powdered opium by weight (the equivalent of 1% morphine).[1]

Laudanum
Combination of
opiumanalgesic
ethanoltincture
Clinical data
Pronunciation/ˈlɔːdnəm, -dənəm/
Pregnancy
category
  • US: C (Risk not ruled out)
    Dependence
    liability    		High
    Routes of
    administration    		Oral, buccal, sublingual
    ATC code
    Legal status
    Legal status
    • UK: Class A
    • US: Schedule II
    • UN: Narcotic Schedule I
      (verify)

    Reddish-brown and extremely bitter, laudanum contains almost all of the opium alkaloids, including morphine and codeine. Laudanum was historically used to treat a variety of conditions, but its principal use was as a pain medication and cough suppressant. Until the early 20th century, laudanum was sold without a prescription and was a constituent of many patent medicines. Today, laudanum is recognized as addictive and is strictly regulated and controlled as such throughout most of the world. The United States Uniform Controlled Substances Act, for one example, lists it on Schedule II.

    Laudanum is known as a "whole opium" preparation since it historically contained all the opium alkaloids. Today, however, the drug is often processed to remove all or most of the noscapine (also called narcotine) present as this is a strong emetic and does not add appreciably to the analgesic or antipropulsive properties of opium; the resulting solution is called Denarcotized Tincture of Opium or Deodorized Tincture of Opium (DTO).

    Laudanum remains available by prescription in the United States and theoretically in the United Kingdom, although today the drug's therapeutic indications are generally confined to controlling diarrhea, alleviating pain, and easing withdrawal symptoms in infants born to mothers addicted to heroin or other opioids. Recent enforcement action by the U.S. Food and Drug Administration (FDA) against manufacturers of paregoric and opium tincture suggests that opium tincture's availability in the U.S. may be in jeopardy.

    The terms laudanum and tincture of opium are generally interchangeable, but in contemporary medical practice the latter is used almost exclusively.

    History

    Paracelsus, a 16th-century Swiss-German alchemist, experimented with various opium concoctions, and recommended opium for reducing pain. One of his preparations, a pill which he extolled as his "archanum" or "laudanum", may have contained opium.[2] Paracelsus' laudanum was strikingly different from the standard laudanum of the 17th century and beyond, containing crushed pearls, musk, amber, and other substances.[3] One researcher has documented that "Laudanum, as listed in the London Pharmacopoeia (1618), was a pill made from opium, saffron, castor, ambergris, musk and nutmeg".[4]

    Laudanum remained largely unknown until the 1660s when English physician Thomas Sydenham (1624–1689) compounded a proprietary opium tincture that he also named laudanum, although it differed substantially from the laudanum of Paracelsus. In 1676 Sydenham published a seminal work, Medical Observations Concerning the History and Cure of Acute Diseases, in which he promoted his brand of opium tincture, and advocated its use for a range of medical conditions.[3] By the 18th century, the medicinal properties of opium and laudanum were well known, and the term "laudanum" came to refer to any combination of opium and alcohol. Several physicians, including John Jones, John Brown, and George Young, the latter of whom published a comprehensive medical text entitled Treatise on Opium, extolled the virtues of laudanum and recommended the drug for practically every ailment.[3] "Opium, and after 1820, morphine, was mixed with everything imaginable: mercury, hashish, cayenne pepper, ether, chloroform, belladonna, whiskey, wine and brandy."[5]

    Confessions of a laudanum drinker, The Lancet, 1866.

    As one researcher has noted: "To understand the popularity of a medicine that eased—even if only temporarily—coughing, diarrhoea and pain, one only has to consider the living conditions at the time". In the 1850s, "cholera and dysentery regularly ripped through communities, its victims often dying from debilitating diarrhoea", and dropsy, consumption, ague and rheumatism were all too common.[6]

    By the 19th century, laudanum was used in many patent medicines to "relieve pain ... to produce sleep ... to allay irritation ... to check excessive secretions ... to support the system ... [and] as a soporific".[7][8] The limited pharmacopoeia of the day meant that opium derivatives were among the most effective of available treatments, so laudanum was widely prescribed for ailments from colds to meningitis to cardiac diseases, in both adults and children. Laudanum was used during the yellow fever epidemic.

    Innumerable Victorian women were prescribed the drug for relief of menstrual cramps and vague aches. Nurses also spoon-fed laudanum to infants. The Romantic and Victorian eras were marked by the widespread use of laudanum in Europe and the United States. Mary Todd Lincoln, for example, the wife of the US president Abraham Lincoln, was a laudanum addict, as was the English poet Samuel Taylor Coleridge, who was famously interrupted in the middle of an opium-induced writing session of Kubla Khan by a "person from Porlock".[9] Initially a working class drug, laudanum was cheaper than a bottle of gin or wine, because it was treated as a medication for legal purposes and not taxed as an alcoholic beverage.

    Laudanum was used in home remedies and prescriptions, as well as a single medication. For example, a 1901 medical book published for home health use gave the following two "Simple Remedy Formulas" for "dysenterry" [sic]: (1) Thin boiled starch, 2 ounces; Laudanum, 20 drops; "Use as an injection [meaning as an enema] every six to twelve hours"; (2) Tincture rhubarb, 1 ounce; Laudanum 4 drachms; "Dose: One teaspoonful every three hours." In a section entitled "Professional Prescriptions" is a formula for "diarrhoea (acute)": Tincture opium, deodorized, 15 drops; Subnitrate of bismuth, 2 drachms; Simple syrup, ​1⁄2 ounce; Chalk mixture, 1​1⁄2 ounces, "A teaspoonful every two or three hours to a child one year old." "Diarrhoea (chronic)": Aqueous extract of ergot, 20 grains; Extract of nux vomica, 5 grains; Extract of Opium, 10 grains, "Make 20 pills. Take one pill every three or four hours."[10]

    The early 20th century brought increased regulation of all manner of narcotics, including laudanum, as the addictive properties of opium became more widely understood, and "patent medicines came under fire, largely because of their mysterious compositions".[11] In the US, the Food and Drug Act of 1906 required that certain specified drugs, including alcohol, cocaine, heroin, morphine, and cannabis, be accurately labeled with contents and dosage. Previously many drugs had been sold as patent medicines with secret ingredients or misleading labels. Cocaine, heroin, cannabis, and other such drugs continued to be legally available without prescription as long as they were labeled. It is estimated that sale of patent medicines containing opiates decreased by 33% after labeling was mandated.[12] In 1906 in Britain and in 1908 in Canada "laws requiring disclosure of ingredients and limitation of narcotic content were instituted".[11]

    The Harrison Narcotics Tax Act of 1914 restricted the manufacture and distribution of opiates, including laudanum, and coca derivatives in the US. This was followed by France's Loi des stupéfiants in 1916, and Britain's Dangerous Drugs Act in 1920.[11]

    Laudanum was supplied to druggists and physicians in regular and concentrated versions. For example, in 1915, Frank S. Betz Co., a medical supply company in Hammond, Indiana, advertised Tincture of Opium, U.S.P., for $2.90 per lb., Tincture of Opium Camphorated, U.S.P, for 85 cents per lb., and Tincture of Opium Deodorized, for $2.85 per lb.[13] Four versions of opium as a fluid extract were also offered: (1) Opium, Concentrated (assayed) "For making Tincture Opii (Laudanum) U.S.P. Four times the strength of the regular U.S.P." tincture, for $9.35 per pint; (2) Opium, Camphorated Conc. "1 oz. making 8 ozs. Tr. Opii Camphorated U.S.P (Paregoric)" for $2.00 per pint; (3) Opium, Concentrated (Deodorized and Denarcotized) "Four times the strength of tincture, Used when Tinct. Opii U.S.P. is contraindicated" for $9.50 per pint, and (4) Opium (Aqueous), U.S.P., 1890, "Tr. (assayed) Papayer Somniferum" for $2.25 per pint.[14]

    In 1929–30, Parke, Davis & Co., a major US drug manufacturer based in Detroit, Michigan, sold "Opium, U.S.P. (Laudanum)", as Tincture No. 23, for $10.80 per pint (16 fluid ounces), and "Opium Camphorated, U.S.P. (Paregoric)", as Tincture No. 20, for $2.20 per pint. Concentrated versions were available. "Opium Camphorated, for U.S.P. Tincture: Liquid No. 338" was "exactly 8 times the strength of Tincture Opium Camphorated (Paregoric) [italics in original], U.S.P., "designed for preparing the tincture by direct dilution," and cost $7 per pint. Similarly, at a cost of $36 per pint, "Opium Concentrated, for U.S.P. Tincture: Liquid No. 336", was "four times the strength of the official tincture", and "designed for the extemporaneous preparation of the tincture".[15] The catalog also noted: "For quarter-pint bottles add 80c. per pint to the price given for pints."

    Toward the middle 20th century, the use of opiates was generally limited to the treatment of pain, and opium was no longer a medically accepted "cure-all". Further, the pharmaceutical industry began synthesizing various opioids, such as propoxyphene, oxymorphone and oxycodone. These synthetic opioids, along with codeine and morphine were preferable to laudanum since a single opioid could be prescribed for different types of pain rather than the "cocktail" of laudanum, which contains nearly all of the opium alkaloids. Consequently, laudanum became mostly obsolete as an analgesic, since its principal ingredient is morphine, which can be prescribed by itself to treat pain. Until now, there has been no medical consensus on which of the two (laudanum or morphine alone) is the better choice for treating pain.

    In 1970, the US adopted the Uniform Controlled Substances Act, which regulated opium tincture (Laudanum) as a Schedule II substance (currently DEA #9630),[16] placing even tighter controls on the drug.

    By the late 20th century, laudanum's use was almost exclusively confined to treating severe diarrhea. The current prescribing information for laudanum in the US states that opium tincture's sole indication is as an anti-diarrheal, although the drug is occasionally prescribed off-label for treating pain and neonatal withdrawal syndrome.

    Historical varieties
    Italian Sydenham laudanum tincture from the 1950s

    Several historical varieties of laudanum exist, including Paracelsus' laudanum, Sydenham's Laudanum (also known as tinctura opii crocata), benzoic laudanum (tinctura opii benzoica),[17] and deodorized tincture of opium (the most common contemporary formulation), among others. Depending on the version, additional amounts of the substances and additional active ingredients (e.g. saffron, sugar, eugenol) are added, modifying its effects (e.g., amount of sedation, or antitussive properties).

    There is probably no single reference that lists all the pharmaceutical variations of laudanum that were created and used in different countries during centuries since it was initially formulated. The reasons are that in addition to official variations described in pharmacopeias, pharmacists and drug manufacturers were free to alter such formulas. The alcohol content of Laudanum probably varied substantially; on the labels of turn-of-the-century bottles of Laudanum, alcoholic content is stated as 48%. In contrast, the current version of Laudanum contains about 18% alcohol.

    The four variations of laudanum listed here were used in the United States during the late 19th century. The first, from an 1870 publication, is "Best Turkey opium 1 oz., slice, and pour upon it boiling water 1 gill, and work it in a bowl or mortar until it is dissolved; then pour it into the bottle, and with alcohol of 70 percent proof ​1⁄2 pt., rinse the dish, adding the alcohol to the preparation, shaking well, and in 24 hours it will be ready for us. Dose—From 10 to 30 drops for adults, according to the strength of the patient, or severity of the pain. Thirty drops of this laudanum will be equal to one grain of opium. And this is a much better way to prepare it than putting the opium into alcohol, or any other spirits alone, for in that case much of the opium does not dissolve."[18] The remaining three formulas are copied from an 1890 publication of the day:

    1. Sydenham's Laudanum:[19] "According to the Paris Codex this is prepared as follows: opium, 2 ounces; saffron, 1 ounce; bruised cinnamon and bruised cloves, each 1 drachm; sherry wine, 1 pint. Mix and macerate for 15 days and filter. Twenty drops are equal to one grain of opium."
    2. Rousseau's Laudanum: "Dissolve 12 ounces white honey in 3 pounds warm water, and set it aside in a warm place. When fermentation begins add to it a solution of 4 ounces selected opium in 12 ounces water. Let the mixture stand for a month at a temperature of 86° Fahr.; then strain, filter, and evaporate to 10 ounces; finally strain and add 4​1⁄2 ounces proof alcohol. Seven drops of this preparation contain about 1 grain of opium."
    3. Tincture of Opium (Laudanum), U.S.P., attributed to the United States Pharmacoepia of 1863: "Macerate 2​1⁄2 ounces opium, in moderately fine powder in 1 pint water for 3 days, with frequent agitation. Add 1 pint alcohol, and macerate for 3 days longer. Percolate, and displace 2 pints tincture by adding dilute alcohol in the percolator."[20]

    Modern status

    United States

    Tincture of Opium is available by prescription in the United States. It is regulated as a Schedule II drug (No. 9639) under the Controlled Substances Act.

    In the United States, opium tincture is marketed and distributed by several pharmaceutical firms, each producing a single formulation of the drug, which is deodorized. Each mL contains 10 mg of anhydrous morphine (the equivalent of 100 mg of powdered opium), other opium alkaloids (except noscapine), and ethanol, 19%. It is available packaged in bottles of four US fluid ounces (118 mL) and 16 US fluid ounces (1 US pt; 473 mL).

    Tincture of Opium is known as one of many "unapproved drugs" regulated by the U.S. Food and Drug Administration (FDA); the marketing and distribution of opium tincture prevails today only because opium tincture was sold prior to the Federal Food, Drug & Cosmetic Act of 1938.[21] Its "grandfathered" status protects opium tincture from being required to undergo strict FDA drug reviews and subsequent approval processes. However, the FDA closely monitors the labeling of opium tincture. Bottles of opium tincture are required by the FDA to bear a bright red "POISON" label given the potency of the drug and the potential for overdose (see discussion about confusion with Paregoric below). Additionally, in a warning letter to a manufacturer of opium tincture in late 2009, the FDA noted that "we found that your firm is manufacturing and distributing the prescription drug Opium Tincture USP (Deodorized – 10 mg/mL). Based on our information, there are no FDA-approved applications on file for this drug product."[22]

    United Kingdom

    Opium tincture remains in the British Pharmacopoeia, where it is referred to as Tincture of Opium, B.P., Laudanum, Thebaic Tincture or Tinctura Thebaica, and "adjusted to contain 1% w/v of anhydrous morphine."[23] It is a Class A substance under the Misuse of Drugs Act of 1971. At least one manufacturer (Macfarlan Smith) still produces opium tincture in the UK as of 2011.[24] "Gee's Linctus" is also available from most UK pharmacies, especially independent stores. This contains "Opium Tincture", at 0.083 mL, per 5 mL.

    Pharmacology

    Opium tincture is useful as an analgesic and antidiarrheal. Opium enhances the tone in the long segments of the longitudinal muscle and inhibits propulsive contraction of circular and longitudinal muscles. The pharmacological effects of opium tincture are due principally to its morphine content. The quantity of the papaverine and codeine alkaloids in opium tincture is too small to have any demonstrable central nervous system effect.[25]

    Most modern formulations of opium tincture do not contain the alkaloid narcotine (also known as noscapine), which has antitussive properties. Even modest doses of narcotine can induce profound nausea and vomiting.[26] Since opium tincture is usually prescribed for its antidiarrheal and analgesic properties (rather than as an antitussive), opium tincture without narcotine is generally preferred. This "de-narcotized" or "deodorized" opium tincture is formulated using a petroleum distillate to remove the narcotine.[25]

    Oral doses of opium tincture are rapidly absorbed in the gastrointestinal tract and metabolized in the liver. Peak plasma concentrations of the morphine content are reached in about one hour, and nearly 75% of the morphine content of the opium tincture is excreted in the urine within 48 hours after oral administration.

    Medical uses

    Diarrhea

    Opium tincture is indicated for the treatment of severe fulminant (intense, prolific) diarrhea that does not respond to standard therapy (e.g., Imodium or Lomotil).[25] The usual starting dose is 0.3 mL to 0.6 mL (about six to 12 drops) in a glass of water or juice four times a day.[25] Refractory cases (such as diarrhea resulting from the complications of HIV/AIDS) may require higher than normal dosing, for example, 1 to 2 mL every 3 hours, for a total daily dose of up to 16mL a day. In terminal diseases, there is no ceiling dose for opium tincture; the dose is increased slowly until diarrhea is controlled.[27]

    Neonatal abstinence syndrome

    Opium tincture is used to treat neonatal abstinence syndrome (NAS) when diluted 1:25 (one part opium tincture to 25 parts water).[28] The recommended dose is 0.2 mL of the diluted solution under the tongue every three hours, which may be increased by 0.05 mL every three hours until no objective signs of withdrawal are observed.[28] In no event, however, should the dose exceed 0.7 mL every three hours.[28] The opium tincture is gradually tapered over a 3- to 5-week period, at which point the newborn should be completely free of withdrawal symptoms.[28]

    Pain

    Given its high concentration of morphine, opium tincture is useful for treating moderate to severe pain. The amount of codeine in the tincture is negligible and does not have any appreciable analgesic effect. The dose of tincture is generally the same as that of morphine in opioid-naïve patients, titrated upward as needed. The usual starting dose in adults is 1.5 mL by mouth every 3 to 4 hours, representing the equivalent of 15 mg—approximately ​1⁄4 grain—of morphine per dose.

    Opioid-tolerant patients may require higher than normal dosing. For the opioid tolerant patient, doses in the range of 3–6 mL every 3–4 hours would be usual. This would represent an equivalent daily dose of between 180 mg and 480 mg of morphine.

    Today, morphine and codeine are available in various forms as single formulation products, which are easier to dose and are much cheaper than opium tincture. Thus, opium is rarely prescribed to treat pain in contemporary medicine. Further, opium tincture contains 17–19% alcohol, by volume, which may complicate its use as an analgesic in patients for whom alcohol is contraindicated.

    Dosage

    Extreme caution is advised when administering doses of Tincture of Opium. Doses should be carefully measured using an oral syringe or calibrated dropper. Apothecary measurements should be avoided in contemporary medical prescriptions, and the prescriber should dose opium tincture in mL or fractions thereof. If in the prescriber's judgment dosing in drops would be appropriate, it should be borne in mind that in contemporary medicine, there are 20 drops per mL.

    The differences between Tincture of Opium (Laudanum) and Camphorated Tincture of Opium (Paregoric) are important and should be kept in mind when administering either of these drugs. Care and caution should always be taken in administering doses of Tincture of Opium, such as the use of a dosage syringe or other suitable measurement device, and by pharmacists in preparing Paregoric from Laudanum, and to note that the dosages in this article refer to Apothecaries weight and fluid measure. In particular, "the difference between a minim and a drop should be borne in mind when figuring doses. A minim is always a sixtieth part of a fluidrachm regardless of the character of the substance, while a drop varies from a forty-fifth to a two-hundred-and-fiftieth part, according to the surface tension of the fluid."[29] Tincture of Opium (Laudanum) and Camphorated Tincture of Opium (Paregoric) each have 50.9 drops per gram; 50.0 drops per cc; 185.0 drops per fluid drachm; and 3.10 drops per minim."[30] The importance of these distinctions is evident in view of the dangers of erroneously relying upon more general descriptions of apothecaries' fluid measures, which typically list 60 minims per fluid dram, and 8 fluid drams per fluid ounce (480 minims).[31]

    Hazards

    Potency of laudanum

    Opium tincture is one of the most potent oral formulations of morphine available by prescription. Accidental or deliberate overdose is common with opium tincture given the highly concentrated nature of the solution. Overdose and death may occur with a single oral dose of between 100 and 150 mg of morphine in a healthy adult who is not habituated to opiates.[32][33] This represents the equivalent of between two to three teaspoons (10–15 mL) of opium tincture. Suicide by laudanum was not uncommon in the mid-19th century.[34] Prudent medical judgment necessitates toward dispensing very small quantities of opium tincture in small dropper bottles or in pre-filled syringes to reduce the risk of intentional or accidental overdose.[35]

    Danger of confusion with paregoric

    In the United States, opium tincture contains 10 mg per mL of anhydrous morphine. By contrast, opium tincture's weaker cousin, paregoric, also confusingly known as "camphorated tincture of opium", is 1/25th the strength of opium tincture, containing only 0.4 mg of morphine per mL. A 25-fold morphine overdose may occur if opium tincture is used where paregoric is indicated. Opium tincture is almost always dosed in drops, or fractions of a mL, or less commonly, in minims, while paregoric is dosed in teaspoons or tablespoons. Thus, an order for opium tincture containing directions in teaspoons is almost certainly in error. To avoid this potentially fatal outcome, the term "camphorated tincture of opium" is avoided in place of paregoric since the former can easily be mistaken for opium tincture.[36]

    In 2004, the FDA issued a "Patient Safety" news bulletin stating that "To help resolve the confusion [between opium tincture and paregoric], FDA will be working with the manufacturers of these two drugs to clarify the labeling on the containers and in the package inserts."[37] Indeed, in 2005, labels for opium tincture began to include the concentration of morphine (10 mg/mL) in large text beneath the words "Opium Tincture". The FDA has also alerted pharmacists and other medical practitioners about the dangers of confusing these drugs, and has recommended that opium tincture not be stocked as a standard item (i.e., that it should not be "on the shelf"), that opium tincture be dispensed in oral syringes, and that pharmacy software alert the dispenser if unusually large doses of opium tincture appear to be indicated.[38]

    Despite the FDA's efforts over the past few years, the confusion persists, sometimes with deadly results.[39] The Institute for Safe Medication Practices recommends that opium tincture not be stocked at all in a pharmacy's inventory, and that "It may be time to relegate opium tincture and paregoric to the museum of outmoded opioid therapy."[36] Despite the risk of confusion, opium tincture, like many end-stage medications, is indispensable for intractable diarrhea for terminally ill patients, such as those suffering from AIDS and cancer.[27]

    Misinterpretation of "DTO"

    The abbreviation "DTO," traditionally used to refer to Deodorized Tincture of Opium, is sometimes also erroneously employed to abbreviate "diluted tincture of opium." Diluted tincture of opium, also known as Camphorated Tincture of Opium (Paregoric) is a 1:25 mixture of opium tincture to water prescribed to treat withdrawal symptoms in newborns whose mothers were using opioids while pregnant. The United States Pharmacopeia and FDA recommend that practitioners refrain from using DTO in prescriptions, given this potential for confusion. In cases where pharmacists have misinterpreted DTO, and given "deodorized tincture of opium" when "diluted tincture of opium" was meant, infants have received a massive 25-fold overdose of morphine, sometimes resulting in fatalities.[36]

    Side effects

    Side effects of laudanum are generally the same as with morphine, and include euphoria, dysphoria, pruritus, sedation, constipation, reduced tidal volume, respiratory depression, as well as psychological dependence, physical dependence, miosis, and xerostomia. Overdose can result in severe respiratory depression or collapse and death. The ethanol component can also induce adverse effects at higher doses; the side effects are the same as with alcohol. Long-term use of laudanum in nonterminal diseases is discouraged due to the possibility of drug tolerance and addiction. Long-term use can also lead to abnormal liver function tests; specifically, prolonged morphine use can increase ALT and AST blood serum levels.

    Treatment for overdose

    Life-threatening overdose of opium tincture owes to the preparation's morphine content. Morphine produces a dose-dependent depressive effect on the respiratory system, which can lead to profound respiratory depression, hypoxia, coma and finally respiratory arrest and death. If overdose of opium tincture is suspected, rapid professional intervention is required. The primary concern is re-establishing a viable airway and institution of assisted or controlled ventilation if the patient is unable to breathe on his own. Other supportive measures such as the use of vasopressors and oxygen may be indicated to treat cardiac and/or pulmonary failure. Cardiac arrhythmias or arrest will require advanced life-saving measures.

    Intravenous naloxone or nalmefene, quick-acting opioid antagonists, are the first-line treatment to reverse respiratory depression caused by an overdose of opium tincture. Gastric lavage may be of some use in certain cases.

    In fiction
    • Laudanum is portrayed as the surgical drug of choice for fifteenth-century physicians in Lawrence Schoonover's novel The Burnished Blade (1948), the plot of which deals in part with the smuggling of expensive raw opium into France from the Empire of Trebizond.[40]
    • Dr Stephen Maturin, one of the main characters in Patrick O'Brian's Aubrey–Maturin series of novels about the Napoleonic wars, is a sometime laudanum addict.[41]
    • Wilkie Collins' novel The Moonstone (1868) features laudanum "as an essential ingredient of the plot." Collins based his description of the drug's effects on his own experiences with it.[42]
    • A laudanum-addicted character also appeared in Wilkie Collins' novel Armadale (1864–66).[43]
    • In Mary Shelley's novel Frankenstein (1818), Victor Frankenstein takes laudanum as his only means of sleeping and thus preserving his life while in recovery from months of fever and a series of horrible events.[44]
    • In Uncle Tom's Cabin (1852), an anti-slavery novel by Harriet Beecher Stowe, a slave named Cassy talks about how she killed her newborn by laudanum overdose to spare him from experiencing the horrors of slavery.[45]
    • In William Faulkner's novel Requiem for a Nun (1951), Compson, Doctor Peabody, and Ratcliffe give whiskey tainted with laudanum to a group of rowdy lynchers and a militia band that had joined together. Upon their falling asleep, they were gathered up and locked in jail while still unconscious.[46]

    See also

    References
    1. Also labeled Tr. Opii, Tinctura Opii Deodorati, Tincture of Deodorized Opium, Opii tinctura. Tincture of Opium, U.S.P, "yields, from each 100 cc, not less than 0.95 gm and not more than 1.05 gm of anhydrous morphine". Source: The Pharmacopoeia of the United States of America. 10th Decennial revision (U.S.P. X). Philadelphia, USA. J. B. Lippincott Company, 1925 (Official from January 1, 1926), page 400.
    2. Sigerist, H. E. (1941). "Laudanum in the Works of Paracelsus" (PDF). Bull. Hist. Med. 9: 530–544. Retrieved 5 September 2018.
    3. Davenport-Hines, Richard (2004). "Early History". The Pursuit of Oblivion. ISBN 9780393325454. Retrieved 2009-01-16.
    4. “In the Arms of Morpheus: The Tragic History of Laudanum, Morphine, and Patent Medicines”, by Barbara Hodgson. Buffalo, New York, USA. Firefly Books, 2001, page 45.
    5. “In the Arms of Morpheus: The Tragic History of Laudanum, Morphine, and Patent Medicines”, by Barbara Hodgson. Buffalo, New York: Firefly Books, 2001, page 104.
    6. In the Arms of Morpheus: The Tragic History of Laudanum, Morphine, and Patent Medicines, by Barbara Hodgson. Buffalo, New York: Firefly Books, 2001, pages 44-49.
    7. Potter, Sam'l O. L. (1902). "Opium". A Compend of Materia Medica, Therapeutics, and Prescription Writing. Retrieved 2007-10-13.
    8. Licit & Illicit Drugs, by Edward M. Brecher and the Editors of Consumer Reports. Boston, USA. Little, Brown and Company, 1972. See chapter 1, "Nineteenth-century America-a 'dope fiend's paradise'", pages 3-7.
    9. "Camel Press". lincoln.coffeetownpress.com.
    10. Medicology or Home Encyclopedia of Health, by Joseph G. Richardson. New York, Philadelphia and London: University Medical Society, 1901, pages 1276 and 1282.
    11. In the Arms of Morpheus: The Tragic History of Laudanum, Morphine, and Patent Medicines, by Barbara Hodgson. Buffalo, New York, USA. Firefly Books, 2001, page 126.
    12. Musto, David F. (1999). The American Disease: Origins of Narcotic Control (3 ed.). Oxford University Press. ISBN 0-19-512509-6
    13. Frank S. Betz Co. 1915 Catalog No. N-15. Second edition. Hammond, Indiana, USA. Frank S. Betz Co., page 320.
    14. Frank S. Betz Co. 1915 Catalog No. N-15. Second edition. Hammond, Indiana, USA. Frank S. Betz Co., page 318.
    15. 1929–1930 Physicians' Catalog of the Pharmaceutical and Biological Products of Parke, Davis & Company, pages 87-88.
    16. "visited July 31, 2010). Also under Schedule II are opium extracts, opium fluidextract, opium poppy (Papaver somniferum), granulated opium, powdered opium, and raw or gum opium, each with an individual DEA number".
    17. Belgische Farmacopee, 5de uitgave, 1966; part 3.
    18. A. W. Chase, Dr. Chase's Recipes. Ann Arbor, Michigan: Published by R. A. Beal, 1870, page 133.
    19. Thomas Sydenham, an English physician, formulated this version of Laudanum in the 1660s.
    20. Encyclopedia of Practical Receipts and Processes, by William B. Dick. Fifth edition. New York: Dick & Fitzgerald, Publishers, 1890, pages 416, 447 and 472.
    21. "Unapproved Drugs, What's the Big Deal?" (PDF). International Journal of Pharmaceutical Compounding, Winter 2006. Retrieved 2009-01-03.
    22. https://www.fdanews.com/ext/resources/files/archives/o/Ohm-Laboratories-WL.pdf
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