It all depends on how receptive your body is to the drug. For some, 100 mg may be too little and nothing happens, while for others, 50 mg helps. Personally, 25 mg helps me; my hair has become more vibrant, and the corners of my forehead have started to grow back.
you should hop on oral min and oral castor oil to really stretch the result of your spironolactone. since its kind of a risky drug to take (compared to bica) you will appreciate the synergy with minoxidil and castor oil