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Per our doctor’s advice and routine bloodwork for over a decade, my wife takess 100,000 weekly and I take 50,000. It’s nice to accomplish in just one or two pills a week versus a c... Read More


- Chris W.

Bio-Tech makes great supplements in the high doses I need. Ordering from them was quick and easy.


- Amanda H.

I appreciate Bio-Tech's ethos. They make great products that you can trust, they are transparent, and their service is fast.


- Bethany B.

Fast order fulfillment, beautifully packaged, great product. Water-soluble D3 in 50,000iu dosage is a beautiful solution to low D3 levels, critical now we know its role in immune f... Read More


- Scott M.