I'm a nutritionist I study on ingredient as well. I have a doctors book so even if it's the supplement is pharmeautical grade I will check if there's any side effect before I consume. People please bear in mind, dosent mean pharmeautical grade has no side effect. I wouldn't spend $ to harm my own body.

ads don't really matter if the brand doesn't do as it claims. so reviews matter more

Best to get feedback from others who have actually used the product before

Because the doctor’s recommended it or friends say its good

I will read reviews because buying a specific brand

Good reviews also must see whether it’s paid for

But it’s more research and pd recommendation

I would read reviews before making a purchase.

Usually choose based on reviews.

I ask friends who have taken it