The Effect of St John's Wort on the Pharmacokinetics and Metabolism of Finasteride in Man

The user experienced a significant drop in libido and erectile issues after increasing their finasteride dosage, combining oral and topical treatments. They plan to take a break and resume using a lower concentration of topical finasteride to manage side effects.

A 29-year-old male on 1 mg Finasteride for 3 months has experienced a significant increase in testosterone and estradiol levels, with no major side effects except slightly oilier skin and increased emotional sensitivity. The user is concerned about these hormonal changes and seeks advice, as their general practitioner is not knowledgeable about the issue.

Finasteride can affect hormone levels within two weeks, and a break of several weeks is recommended for baseline results. Monitoring E2 and testosterone is suggested to assess the risk of gynecomastia.

Finasteride has no effect on the user's estradiol levels, and body fat may influence aromatization. The user is on testosterone replacement therapy and uses everyday injections to manage high RBC count, with plans to measure DHT, DHEA-S, and pregnenolone levels.

Finasteride's impact on fertility is discussed, with users sharing experiences of conceiving while on the medication. Concerns about long-term safety are also mentioned.

The conversation discusses the effects of finasteride on libido, with the original poster experiencing a significant decrease in sexual desire after starting the medication. Other users share similar experiences and suggest potential remedies, including Vitamin E supplementation and lifestyle changes like avoiding pornography.