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Atiprosin is an investigational antihypertensive agent that acts as a selective alpha1-adrenergic receptor antagonist, developed in the 1980s and never marketed.
- Lowered blood pressure through alpha1-receptor blockade in animal studies
Overview
A shelved 1980s blood pressure drug, conceptually similar to alpha-blockers like prazosin that did make it to market.
Mechanism
Atiprosin selectively blocks alpha1- receptors on vascular smooth muscle, preventing -driven vasoconstriction and thereby lowering peripheral vascular resistance and blood pressure. It also has weak antihistamine (H1-blocking) activity, reported as roughly 15-fold less potent than its alpha1-blocking effect.
receptor fingerprint
Alpha-1 receptorAntagonist
H1 receptorAntagonist
Safetyrisks and cautions, not medical advice
Pharmacological characterization was limited to isolated tissue preparations and animal studies in rats, dogs, and primates, published in the late 1980s. No human clinical trial safety data are publicly available, and the compound never advanced to marketing.
Subjective profileweighing the evidence above
Nothing to judge. It lowered blood pressure in animals in the late 1980s and then vanished without a single published human trial or a marketing approval. Approved alpha blockers do this job with actual evidence behind them.
Resources
This entry is here for reference.
Reviews
My notesprivate to this device
FAQ
What is Atiprosin used for?
It was developed in the 1980s as an experimental treatment for high blood pressure but was never marketed.
How does Atiprosin work?
It blocks alpha1-adrenergic receptors on blood vessels, causing them to relax and lowering blood pressure, similar to marketed alpha-blockers.
Is Atiprosin well-researched?
Research is limited to isolated tissue and animal studies from the 1980s; no published human trial data exist.
Limitations of the evidence
- No human clinical trial data publicly available
- Never marketed or assigned an ATC code
- Weak antihistamine activity could contribute to sedation, though this was not confirmed in humans