Change Products can caused shedding?

[amthebot]

i've been using minoxidil 5mg of one brand for couple of months and in the beginning of using i've been through scary shedding period but after that about 2months all getting well

Suddenly the brand i am using not selling, so force me to try new brand of same product same strength but i feel like i am facing a light shedding period again

pls... can anybody tell me that is it possible that i can face the shedding time again by just change the brand of product? otherwise i really need to find out what is the reason....