Phenibut may induce sleepiness and slowed respiratory. Some drugs, identified as sedatives, can also bring about sleepiness and slowed respiratory. Having phenibut with sedative drugs might cause respiration challenges and/or a lot of sleepiness. Zakharov, V V et al. “Lechenie bol’nykh s khronicheskoi ishemiei golovnogo mozga: opyt primeneniya kombinirovannogo neiroprotektivnogo https://lukasfghih.blog5star.com/32554055/bemitil-an-overview