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In 16 years Natural Biology has never received a negative review of Vintage Resveatrol 100%, Okinawa Coral Calcium, Everest Earth & Sea Formula, 4GRAMS, and Vita-Trates - 4GRAMS has only received 5 Star ratings from Google, Amazon, and our great customers...

Susan Hart
- San Francisco, Ca. I've taken supplements for over 30 years religiously and 4GRAMS is in a class of its own. It's everything your website materials said it was. Thank you!!!!

Sally Herring - Washington DC You don't think of yourself as being addicted to a supplement but I am addicted to 4GRAMS. I'd hate to face another day without it. It's simply amazing.

Dr. Phil B - Pittsburg, Pa - Natural Biology continues to amaze me with their quality and research. I've taken 4GRAMS for a little over 3 months. It's smooth, effective, and I feel my best everyday.

Joe Brown - Atlanta, Ga. - I've taken Natural Biology supplements now for 15 years. They always exceed my expectations. 4GRAMS is powerful but easy to take, and I feel great. Good work.

Bob Luke - Naples, Fl. - This is really good stuff. I take 5 a day each day and I could really tell the difference in how I felt about about a month. Really good.

Nurse Beth - Nashville, Tn - I am busy. I need to supplement my nutritional fast-food habits and 4GRAMS is the ticket. I have energy, sleep well,, and it has helped my allergies.

Nathan Huntsman - Columbia, Sc - I cannot believe how much better I feel after taking 4GRAMS for a little over 3 months now. It's amazing. Easy to take and works.

Myers Michigan - Brooklyn, NY - I have never found a supplement I trust as much I trust 4GRAMS. I feel the difference when I take it and when I forget I notice I don't feel as good.

Tally Griffin - Dallas TX - I did a lot of research to find a supplement with the French red wine Resveratrol, Broccophane, Aquamin, and Dark Berry Antioxidants at clinical strengths. 4GRAMs was the only one I found and I have not been disappointed. It really makes a difference in how I feel. I've been taking it now for over 6 months and I really believe my overall health has improved. I feel the way I use to 20 years ago.