Triprolidine

Triprolidine
Clinical data
Trade names	Flonase Nighttime Allergy Relief, Actidil, Myidil, Actifed (in the latter combined with pseudoephedrine and either dextromethorphan or guaifenesin)
AHFS/Drugs.com	Monograph
Pregnancy; category	C (US);
Routes of; administration	Oral
ATC code	R06AX07 (WHO) ;
Legal status
Legal status	US: OTC;
Pharmacokinetic data
Bioavailability	4% oral
Protein binding	90%
Metabolism	Hepatic (CYP2D6)
Elimination half-life	4–6 hours
Excretion	Renal
Identifiers
	IUPAC name 2-[(E)-1-(4-methylphenyl)-3-pyrrolidin-1-yl-; prop-1-enyl]pyridine;
CAS Number	486-12-4 ;
PubChem CID	5282443;
IUPHAR/BPS	1228;
DrugBank	DB00427 ;
ChemSpider	4445597 ;
UNII	2L8T9S52QM;
KEGG	D01782 ;
ChEBI	CHEBI:84116 ;
ChEMBL	ChEMBL855 ;
CompTox Dashboard (EPA)	DTXSID3023718 ;
ECHA InfoCard	100.006.934
Chemical and physical data
Formula	C19H22N2
Molar mass	278.399 g·mol−1
3D model (JSmol)	Interactive image;
Melting point	60 °C (140 °F)
Solubility in water	500 mg/mL (20 °C)
	SMILES n3c(\C(=C\CN1CCCC1)c2ccc(cc2)C)cccc3;
	InChI InChI=1S/C19H22N2/c1-16-7-9-17(10-8-16)18(19-6-2-3-12-20-19)11-15-21-13-4-5-14-21/h2-3,6-12H,4-5,13-15H2,1H3/b18-11+ ; Key:CBEQULMOCCWAQT-WOJGMQOQSA-N ;
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Triprolidine is an over-the-counter antihistamine with anticholinergic properties. It is used to combat the symptoms associated with allergies and is sometimes combined with other cold medications designed to provide general relief for flu-like symptoms. As with many antihistamines, the most common side effect is drowsiness.

It was patented in 1948 and came into medical use in 1953.

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