M21, Generic Minoxidil 2.5mg and Dutasteride tablet or branded

I've been using Lonitab 2.5mg and Duman 0.5mg for my hairloss...I am thinking to switch to Dava India's minoxidil tablet and Dutasteride tablet as they are really affordable and looks good too...but I am genuinely worried about their bioavailability and less data of about them...can anyone help me with this?