question from a user
Is true you cannot take finasteride and nandrolone decanoate at the same time?
AlphaMD's Answer
Testosterone is converted to dihydrotestosterone (DHT) by the enzyme 5a-reductase. DHT is the most androgenic hormone out there, and is the number one cause for hair loss.
Nandrolone is more androgenic than testosterone (slightly) but not nearly as androgenic as DHT.
5a-reductase also attaches to nandrolone, converting it to dihydronandrolone (DHN), which is the least androgenic (most hair safe) of the four hormones (DHT, nandrolone, testosterone, DHN).
So, while 5a-reductase will reduce or eliminate hair loss in men on testosterone, it has the potential to worsen hair loss in men on nandrolone (by preventing the conversion into the least androgenic DHN).
In men on high doses of testosterone and low doses of nandrolone, finasteride still may be a viable option because reducing the testosterone —>DHT conversion may still outweigh the benefits of the nandrolone —>DHN conversion.
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