H-drol and hair loss prevention

[Stacked]

So I finished my 2nd week of the 1st stack and my scalp is getting a little itchy, I know its not usually an issue with hdrol but just in case Id like to take some preventative measures. Is there an OTC topical solution that one can get locally at a supplement place or pharmacy? Ive read posts about nizoral, spiro, follinex, minox but cant locate them other than on the internet where theyre hundreds of $. I know there is some disagreement over what products may counteract gains or even cause problems such as accelerate hair loss, its rather confusing I was hoping for an easy to get otc product if such a thing exist. I assume topical is preferred so it minimally enters bloodstream/doesnt mix with circulating ph's.
thanks guys

[GotTest]

You can get the 1% Nizoral at WalMart/drugstore. I know some use Hair Genesis which I believe is OTC too.

[Stacked]

thanks man, got Nizoral at Target and some saw palmetto, the Nizoral should just be labeled as anti-dandruff right no mention of DHT or hair loss? (its 1%) just making sure there arent 2 different products