Nizoral shampoo....does it have a systemic effect?

im asking cos i got prescribed this for dandruff and im worried it will have a systemic affect on test levels, does it get abosrbed and cause issues.

Also there is a fina shampoo version which acts like fina but topically, does this get absorbed?

I believe Nizoral blocks DHT at the skin level to some degree. So, it probably isnt good for shrunken penis or ED.

Use neutrogena gel extra strength, not salyctic acid but coal tar.