Simultaneous Estimation of Minoxidil and Finasteride by RP-HPLC in Presence of Soy Lecithin Excipient in the Lotion Dosage Form

User seeks help calculating dosages for liquid minoxidil (2% and 5%) and generic finasteride (5mg tablets) to treat hair loss. They want to know how to achieve 2.5 mg of minoxidil and 1 mg of finasteride per ml of solution.

The user is applying 0.4 mg of finasteride and 4 mg of minoxidil daily through a topical solution. This corresponds to a specific dosage analysis for hair loss treatment.

The user is using 0.1% dutasteride, 1% minoxidil with 2% procapil and 0.005% caffeine in the morning, and 1% minoxidil with 2% procapil and 0.01% tretinoin at night. They are concerned about the solution vehicle's effectiveness in preventing systemic absorption and ensuring the products stay around the hair follicles.

Mixing Pyrilutamide powder with Minoxidil solution is being considered. The Minoxidil solution contains Minoxidil 5%, Azelaic acid 5%, ABN complex 0.8%, Retinol 0.025%, Caffeine 0.001%, and a delivery vehicle.

The user wants to reduce their dose of topical finasteride to 0.1-0.2mg and is considering mixing 0.2ml of their current finasteride + minoxidil serum with 0.8ml of a minoxidil-only serum for better scalp coverage. They are asking for advice on whether this method is effective or if there's a better way to dilute the finasteride solution.

RU-58841 does not dissolve well in common Minoxidil solutions due to water content, requiring a 70/30 ethanol/propylene glycol mix. Users report using separate solutions for RU-58841 and finasteride/Minoxidil for better results.