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Systematic (IUPAC) name
Clinical data
AHFS/ monograph
Pregnancy cat.
  • C (US)
Legal status
Routes Oral
Pharmacokinetic data
Bioavailability 4% oral
Protein binding 90%
Metabolism Hepatic (CYP2D6)
Half-life 4-6 hours
Excretion Renal
CAS number 486-12-4 YesY
ATC code R06AX07
PubChem CID 5282443
IUPHAR ligand 1228
DrugBank DB00427
ChemSpider 4445597 YesY
KEGG D01782 N
Chemical data
Formula C19H22N2 
Mol. mass 278.391 g/mol
Physical data
Melt. point 60 °C (140 °F)
Solubility in water 500 mg/mL (20 °C)
 N (what is this?)  (verify)

Triprolidine (Actidil, Myidil, Actifed[In combination with pseudoephedrine, and either dextromethorphan or guaifenesin] in addition in liquids) is an over-the-counter antihistamine with anticholinergic properties.[1] 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.[2] Like many antihistamines, the most common side effect is drowsiness.[1] Triprolidine is a quick acting drug that can clear congestion and stop runny noses in 15-30 minutes.[citation needed]


Triprolidine synthesis[3]

See also[edit]


  1. ^ a b Goldsmith, P.; Dowd, P. M. (1993). "The new H1 antihistamines. Treatment of urticaria and other clinical problems". Dermatologic clinics 11 (1): 87–95. PMID 8094649.  edit
  2. ^ Williams, B. O.; Liao, S. H.; Lai, A. A.; Arnold, J. D.; Perkins, J. G.; Blum, M. R.; Findlay, J. W. (1984). "Bioavailability of pseudoephedrine and triprolidine from combination and single-ingredient products". Clinical pharmacy 3 (6): 638–643. PMID 6509877.  edit
  3. ^ Adamson, D. W. (1958). "61. Aminoalkyl tertiary carbinols and derived products. Part VI. The stereochemistry of some 1-phenyl-1-2?-pyridylprop-1-enes, and of some 3-(tertiary amino)-1-phenyl-1-2?-pyridylprop-1-enes carrying additional substituents". Journal of the Chemical Society (Resumed): 312. doi:10.1039/JR9580000312.  edit