Yes, it will degrade the drugs you've added to your solution. Say you use topical finasteride and you mix them both in the same solution. After a couple days you will have enough free sulfur in the solution to inactivate the finasteride.I dont mind mixing it every day to be honest. Storing it you mean the powder right? Because yeah as youve said i read it degrades in a solution so you would need to make new batches frequently. When you say sulfur will degrade other drugs do you mean drugs that you would potentially have added to your minoxidil solution?