How is Buspirone Supplied Buspirone Hydrochloride Tablets, USP are available containing mg, 10 mg, 15 mg or 30 mg of Buspirone hydrochloride, USP. Single 30 mg tablet can provide the following doses: 30 mg entire tablet 20 mg two thirds of tablet 15 mg one half of tablet or 10 mg one third of tablet. TrakWeblogs that reference this entry None 2009 Microsoft Privacy Terms of use Code of buspirone arts Conduct Report Abuse Safety Account Feedback Healthznews. The primary action of benzodiazepines is to reduce anxiety, relax skeletal muscles, and induce sleep. BuSpar Tablets contain the following inactive ingredients: colloidal silicon dioxide, lactose, magnesium stearate, microcrystalline cellulose, and sodium starch glycolate. Nefazodone: In study of steady-state pharmacokinetics in healthy volunteers, coadministration of buspirone. In clinical trials allowing dose titration, divided doses of 20 to 30 mg per day were commonly employed.