Doxylamine Stats & Data
Pharmacology
DrugBankDescription
Histamine H1 antagonist with pronounced sedative properties. It is used in allergies and as an antitussive, antiemetic, and hypnotic. Doxylamine has also been administered in veterinary applications and was formerly used in parkinsonism.
Mechanism of Action
Like other antihistamines, doxylamine acts by competitively inhibiting histamine at H1 receptors. It also has substantial sedative and anticholinergic effects.
Pharmacodynamics
Doxylamine is an antihistamine commonly used as a sleep aid. This drug is also used to relieve symptoms of hay fever (allergic rhinitis), hives (rash or itching), and other allergic reactions. Doxylamine is a member of the ethanolamine class of antihistamines and has anti-allergy power far superior to virtually every other antihistamine on the market, with the exception of diphenhydramine (Benadryl). It is also the most powerful over-the-counter sedative available in the United States, and more sedating than many prescription hypnotics. In a study, it was found to be superior to even the barbiturate, phenobarbital for use as a sedative. Doxylamine is also a potent anticholinergic.
Absorption
Readily absorbed via the gastrointestinal tract.
Toxicity
Signs of overdose include wheezing, tightness in the chest, fever, itching, bad cough, blue skin color, fits, swelling of face, lips, tongue, or throat.
Indication
Used alone as a short-term sleep aid, in combination with other drugs as a night-time cold and allergy relief drug. Also used in combination with Vitamin B6 (pyridoxine) to prevent morning sickness in pregnant women.
Effect Profile
Curated + 6 ReportsMild sedation and itching/nausea
Tolerance & Pharmacokinetics
drugs.wikiTolerance Decay
Cross-Tolerances
Experience Report Analysis
ErowidDemographics
Gender Distribution
Age Distribution
Reports Over Time
Effect Analysis
ErowidEffects aggregated from 6 experience reports (6 Erowid)
Effect Sentiment Distribution
Confidence Distribution
Positive Effects 2
Adverse Effects 0
Real-World Dose Distribution
62K DosesFrom 16 individual dose entries
Oral (n=12)
Form / Preparation
Most common forms and preparations reported