if u get sides from 1mg finasteride, u should cut the daily dosage down to 0.5mg and then to 0.25mg if u still get sides. that's much better than taking it twice a week. finasteride has a very short half life so it wont be nearly as effective as having it every day. in fact, it's almost going to set u back as much as the benefits you're getting from the days u take finasteride. at its maximum, u should be taking finasteride once every two days, but certainly don't extend it any longer than that.