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DOXYLAMINE
Combination drugs: Nyquil®, Nyquil® Hot Therapy Powder
Doxylamine is an antihistamine used for short-term treatment of insomnia. Doxylamine is available alone in a nonprescription product for sleep and in combination with nonprescription drugs to treat symptoms of allergy, colds, and upper respiratory infections.
Safetychecker Summary
for Doxylamine
(for details about the summarized interactions, read the full article)
Avoid: Adverse interaction—Avoid these supplements when taking this
medication because taking them together may cause undesirable or dangerous results. |
Henbane* |
| Depletion or interference |
None known |
| Side effect reduction/prevention |
None known |
| Supportive interaction |
None known |
| Reduced drug absorption/bioavailability |
None known |
Interactions with Herbs
Henbane (Hyoscyamus niger)
Antihistamines, including doxylamine, can cause “anticholinergic” side effects
such as dryness of mouth and heart palpitations. Henbane also has anticholinergic activity and
side effects. Therefore, use with doxylamine could increase the risk of anticholinergic side
effects;1 however, apparently no interactions have yet been reported with
doxylamine and henbane. Henbane should not be taken except by prescription from a physician
trained in its use, as it is extremely toxic.
Interactions with Foods and Other Compounds
Alcohol
Doxylamine causes drowsiness.2 Alcohol may intensify this effect and increase the
risk of accidental injury.3 To prevent problems, people taking doxylamine or
doxylamine-containing products should avoid alcohol.
References:
1. Blumenthal M, ed. The Complete German Commission E Monographs. Austin, TX: American Botanical Council, 1998, 146.
2. Threlkeld DS, ed. Central Nervous System Drugs, Nonprescription Sleep Aids. In Facts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Dec 1993, 273e.
3. Threlkeld DS, ed. Central Nervous System Drugs, Nonprescription Sleep Aids. In Facts and Comparisons Drug Information. St. Louis, MO, Facts and Comparisons, Dec 1993, 273e.
Copyright © 2002 Healthnotes, Inc. All rights reserved. www.healthnotes.com
Please read the disclaimer about the limitations of the information provided here. Do NOT rely solely on the information in this article.
Learn more about Healthnotes, the company.
Learn more about the authors of Safetychecker.
The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over-the-counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2003.
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