Topical finasteride results in plasma levels 100 times lower than oral finasteride, potentially reducing systemic side effects. Users report similar efficacy with fewer side effects, suggesting a preference for topical application.
Topical finasteride concentrations are likely much higher than necessary for effective follicular DHT suppression, with current standards being 100-1000 times above the theoretical minimum. Lower concentrations (0.001-0.0025%) might still work locally while minimizing systemic exposure.
A user speculates that a fast metabolism might affect the effectiveness of dutasteride for hair loss. Another user argues that drug response is unrelated to metabolism speed.
Intermittent finasteride dosing, like taking it every third day, may reduce side effects while still lowering DHT levels. Users report side effects such as brain fog and weaker erections, which often subside after stopping the drug.
The conversation is about the potential dangers of taking oral minoxidil and grapefruit juice together. Some users express concern about dangerous drug interactions, while others argue that grapefruit juice may inhibit the metabolism of finasteride. The conclusion is that grapefruit juice may make finasteride less effective, but it won't affect minoxidil.