The half-life of Dutasteride is commonly stated as around 5 weeks, but some sources suggest it is 170 hours for men aged 20–49, with further information indicating it varies from 3 days to 5 weeks depending on the dose. The user is seeking clarity on these conflicting figures.
The discussion revolves around the frequency of applying topical finasteride for hair loss treatment. The main question is whether applying it every 4-5 days could still be effective, given that its half-life in the scalp tissue is 5-6 days.
This conversation discussed the potential for a hair loss treatment alternative to minoxidil, with many users debating the economic and health implications of such an option. Some suggested that finasteride could be used as an alternative, while others argued that this would ultimately not benefit pharmaceutical companies due to their reliance on planned obsolescence.
Dutasteride's half-life varies with dosage, and lower doses can be effective with fewer side effects compared to finasteride. Some users report different side effects with dutasteride and finasteride, and extreme dosages of dutasteride are unnecessary and potentially harmful.
Finasteride is preferred for its shorter half-life and FDA approval, while dutasteride is seen as more effective but not FDA-approved for hair loss. Many combine these with minoxidil for improved results, though side effects and effectiveness vary.