Shedding when switching brands of finasteride

I used Minox for 9 Months now, didn’t see much of difference in my diffuse hairloss as I always cut it short. However 4 months ago, I started taking Finasteride 1mg, microneedling 1.5mm every week or 2 weeks. I saw huge improvement in my hair in the last 4 months (Pictures of improvement after 4 months Microneedling+ finasteride are attached to the mail). I used a german brand Finasteride...

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