U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Showing 1 - 10 of 43 results

Status:
US Approved Rx (1982)
First approved in 1951

Class (Stereo):
CHEMICAL (RACEMIC)



Promethazine is a phenothiazine derivative with histamine H1-blocking, antimuscarinic, and sedative properties. Promethazine HCl Oral Solution is useful for: perennial and seasonal allergic rhinitis. Allergic conjunctivitis due to inhalant allergens ...
Status:
US Approved Rx (2020)
First marketed in 1899

Class (Stereo):
CHEMICAL (ABSOLUTE)



The alkaloid L-(-)-scopolamine [L-(-)-hyoscine], a belladonna alkaloid, competitively inhibits muscarinic receptors for acetylcholine and acts as a nonselective muscarinic antagonist, producing both peripheral antimuscarinic properties and central se...
Status:
US Approved OTC
First approved in 1954

Class (Stereo):
CHEMICAL (RACEMIC)



Meclizine, a piperazine-derivative H1-receptor antagonist similar to buclizine, cyclizine, and hydroxyzine, is used as an antivertigo/antiemetic agent. Meclizine is used in the management of nausea, vomiting, and dizziness associated with motion sick...
Status:
US Approved OTC
First approved in 1953

Class (Stereo):
CHEMICAL (ACHIRAL)



Cyclizine (cyclizine hydrochloride, Valoid®) is a histamine H1 antagonist of the piperazine class which is characterised by a low incidence of drowsiness. It possesses anticholinergic and antiemetic properties. The exact mechanism by which cyclizin (...
Status:
US Approved OTC
First approved in 1948

Class (Stereo):
CHEMICAL (RACEMIC)



Pheniramine is an antihistamine used to treat allergic conditions such as hay fever or urticaria. It is generally sold in combination with other medications, rather than as a stand-alone drug. Allergies are caused by an excessive type 1 hypersensitiv...
Status:
US Previously Marketed
First approved in 1954

Class (Stereo):
CHEMICAL (RACEMIC)



Buclizine, a piperazine derivative, is a sedating antihistamine with antimuscarinic and moderate sedative action. The drug is used mainly for its antiemetic action, particularly in the prevention of motion sickness, and in the treatment of migraine i...
Status:
Possibly Marketed Outside US

Class (Stereo):
CHEMICAL (RACEMIC)



Proroxan is a non-selective а-adrenoblocker. Proroxan was found to prevent the development of hypertensive crises and improve cerebral bioelectrical parameters in most of hypertensive patients. Proroxan has been used as an antihypertensive and in the...
Status:
Possibly Marketed Outside US

Class (Stereo):
CHEMICAL (ACHIRAL)



Flunarizine is a selective calcium entry blocker with calmodulin binding properties and histamine H1 / dopamine D2 blocking activity. It is not available in the US but marketed in other countries for prophylaxis of a migraine, occlusive peripheral va...
Status:
Possibly Marketed Outside US

Class (Stereo):
CHEMICAL (ACHIRAL)



Cinnarizine is a piperazine derivative with antihistaminic, antiserotonergic, antidopaminergic, and calcium channel-blocking activities. It inhibits calcium translocation across the vestibular sensory cells in the ampullae and maintains endolymph flo...
Status:
US Approved Rx (1982)
First approved in 1951

Class (Stereo):
CHEMICAL (RACEMIC)



Promethazine is a phenothiazine derivative with histamine H1-blocking, antimuscarinic, and sedative properties. Promethazine HCl Oral Solution is useful for: perennial and seasonal allergic rhinitis. Allergic conjunctivitis due to inhalant allergens ...