Disposition and Pharmacokinetics of [14C]Finasteride After Oral Administration in Humans

March 1992 in “ PubMed ”

Josephine R. Carlin, Peter Höglund, L.-G. Eriksson, Philip Christofalo, S L Gregoire, A. J. Taylor, Karl-Erik Andersson

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Finasteride is metabolized in the liver and excreted through urine and feces. Users humorously discuss its excretion, with one joking about it being expelled through ejaculation.

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A 28-year-old male using only oral finasteride 1mg since May 15, 2024, reports no side effects and significant hair improvement. He plans to continue finasteride for three more months and is considering adding D3+K2 drops, zinc, folate, and magnesium glycinate.

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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.

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The user is on Finasteride for hair loss, taking 0.5mg daily, and plans to reduce the dose to 0.25mg while making lifestyle changes to lower prolactin, SHGB, and cortisol. They will retest in 90 days to assess progress and are open to advice.

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