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Systematic (IUPAC) name
N1-(4-methoxybenzyl)- N2,N2-dimethyl- N1-(pyridin-2-yl)ethane- 1,2-diamine
CAS number 91-84-9
ATC code R06AC01 D04AA02
PubChem  ?
Chemical data
Formula C17H23N3O 
Mol. mass 285.38 g/mol
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.


Legal status
Routes  ?

Mepyramine (INN, also known as pyrilamine) [1] is a first generation antihistamine, targeting the H1 receptor. However, it rapidly permeates the brain and so often causes drowsiness as a side effect.

It is used in over-the-counter combination products for colds and menstrual symptoms.[2]

Side effects may include sedation/drowsiness, muscle weakness, and insomnia.[3]


  1. ^ Parsons, M. E. and Ganellin, C. R. (2006). "Histamine and its receptors". British Journal of Pharmacology 147: S127–S135. PMID 16402096.
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mepyramine". A list of authors is available in Wikipedia.
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