But that business exists not because Hims has developed and gained approval for such a drug, but rather due to a regulatory quirk: if the FDA determines there is a shortage of a particular drug, so-called compounding pharmacies can produce non-brand name versions of FDA-approved drugs, which companies like Hims can then offer patients at a cheaper price than name-brand versions
This creates a concentration of 2,500 mcg/mL (2.5 mg/mL)
Some small studies and reports suggest phentermine may have benefits for ADHD and narcolepsy, but the evidence is far more limited
But most people will probably be fine with a dose of about 750 mg
doi: Moiz, A., Filion, K.B., Tsoukas, M.A., Yu, O.HY., Peters, T.M
Zhao X, Yang Y, Sun BF, Shi Y, Yang X, Xiao W, et al