Oral medications such as Finasteride and Dutasteride are commonly used. In Japan, Finasteride is typically prescribed at 1 mg for AGA. However, in Indonesia, only the 5 mg version is available, which is normally used for treating benign prostatic hyperplasia (BPH), so caution is required. These medications work by inhibiting the production of DHT (dihydrotestosterone), a key substance that contributes to hair loss, thereby preventing damage to the hair follicles and slowing the progression of AGA.

Minoxidil is a topical medication applied directly to the scalp. It works by dilating capillaries and improving blood flow to activate hair follicles. It is particularly effective for thinning at the crown of the head.