GABAA-rho receptor positive allosteric modulators

Allopregnanolone is a naturally occurring neurosteroid which is made in the body from the hormone progesterone. As a medication, allopregnanolone was referred to as brexanolone, sold under the brand name Zulresso, and was used to treat postpartum depression. It was given by injection into a vein.

Alfaxalone, also known as alphaxalone or alphaxolone and sold under the brand name Alfaxan and Faxone, is a neuroactive steroid and general anesthetic which is used currently in veterinary practice as an induction agent for anesthesia and as an injectable anesthetic. The most common side effect seen in current veterinary practice is respiratory depression when Alfaxan is administered concurrently with other sedative and anesthetic drugs; when premedications are not given, veterinary patients also become agitated and hypersensitive when waking up.