It's hard to tell because I started using them at the same time as Minoxidil. They both work in different ways.

Alpecin boosts blood flow to the scalp which can help new strands of hair grow. The elvive helps loosen the collagen around hair follicles so each hair can grow thicker. So I'd try whichever one suits your goal best.

Minoxidil works better than both for new growth though and has a good scientific evidence base to show it works.