We go to university for many years and know what all medications and vitamins are used for (at least should) we make evidence based recommendations for patients. With vitamins we often say u need a blood test to check if u need it. Additionally, a lot of complementary medicines really do help with peoples conditions. I think it depends on the person recommending it and their level of expertise. Unfortunately alot of people recommend vitamins that patients really do t need. But as pharmacists (future pharmacists here) we are obligated to give evidence based recommendations. Again if u have a more specific question in this regard either dm me or ask your pharmacist/ doctor.