I take Bio-Tech-Pharmacal’s Vitamin D 50,000 units once a week. It is the only D supplement that I have taken that has been able to bring my low D numbers up to the normal range! I recommend it to everyone with low D.~ Kristina Logsdon

Resiliency for space depends to a large part on how well nourished we are before we leave the earth and the growing body of evidence revealing the increasing multi-system importance of Vitamin D. Bio-Tech Pharmacal, with astounding swiftness and stellar professional competence, enabled a responsive path to supplement and serve the journey to fortify and sustain the nutritional health of our lives, whether residing here on earth, or aspiring to destinations--off the planet.... Thank you, Lora and Bio-Tech.~ Yvonne Cagle, MDHuman Space Exploration

I love your Vitamin D3 available in a 50,000 unit capsule and have amazing results with patients getting great elevations in their Vitamin D levels with a simple once a week pill. The prescription D2 has not shown me the results or sustainability in Vitamin D levels. ~ Diane Culik

I've been using Biotech for about 5 years. I love their products! ~ Karen Warner

Have used Biotech D-3 for many years. My doctor recommended it. Excellent product!! ~ Jean James

I just want to say that I have been shopping with Bio-Tech-Pharmacal for years and not only do they have excellent products, but their service is cheetah fast! ~ William A. Cole

I absolutely love love you (yes double love) for caring so much as to make your products kosher, halal, and vegan. I've been on your products for few months and now I have my hair, nails, and some of my strength back after long sickness. Again thank you and just wanted to let you know that I am one of your success stories. I wish there's a way I can put this out there were others could benefit from my experience.~ R. Hutcheson