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ABOUT US

Maximum D3® is proudly produced in the USA and managed by the Grote family.  We recognize that every person is unique and deserves a product that aids in their individual health needs.

Thank you for your business!!

MEET DR. GROTE

General philosophy: evidence-based information; proven need and efficacy should take precedence over complex and impressive.

Maximum D3® was designed by Dr. Grote when he was an internist / family practitioner in Illinois.  Dr. Grote strongly believes in the benefits of vitamin D.  He was frustrated that high-quality supplements were not available to his patients, so he carefully formulated Maximum D3® to help his patients achieve optimal vitamin D levels.

Dr. Grote has participated in the design of several research projects related to vitamin D and is a named author on peer-reviewed and published research articles.

DR. JAMES A. GROTE

EDUCATION

  • M.D. - UCLA, 1974
  • Residencies and previous board certification - Family Practice & Internal Medicine
  • Undergraduate Studies - Chemistry, Math & Biology

PROFESSIONAL

  • Physician, Internal Medicine with practice emphasis on Geriatrics - 1979-2007
  • Physician, Internal Medicine - Veterans Affairs Medical Clinic - 2007-2012

Customer Reviews:

"I have been using Maximum D3 for over 15 years. It has been an integral part of treatment for osteoporosis. I would rate the customer service with this company as highly rated as the product."

Michelle
NEW JERSEY ⭐⭐⭐⭐⭐

"I love everything about Maximum D3! It's a family owned business, it's made in the USA, the customer service, but most of all it works! My oncologist started me on it years ago and I've been using Max D3 for years, I'm so happy he did!"

Anne
NEW YORK ⭐⭐⭐⭐⭐

"After being diagnosed with low levels of D3, I have been using Maximumd3 for years. I feel great and my d3 levels have returned to normal. In addition, the people at Pro Pharma LLC are a pleasure to work with."

Joe
MASSACHUSETTS ⭐⭐⭐⭐⭐

"I first found this product because a friend of mine that’s a doctor highly recommended it and I love it, especially since it’s a once a week vitamin."

Amanda
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"In 2008, my vitamin D level was 24, way below the acceptable level of 30. My GP, Dr. [hidden] at Weill Cornell recommended Maximum D3 for the excellent quality of your product, made in a medical lab and safe to take. Within a year, I was back to a "normal" level...As a breast cancer survivor who cannot be on hormone replacement therapy, a good level of Vitamin D3 is necessary to protect your bones from Osteoporosis!"

Annie
New York

"I had way below normal levels and as long as I take my D twice a week, they are fine...I like that the product is made in the USA and that it is a family owned business."

Carol
Tennessee

"I have been using Vitamin D3 Max for at least 20 years and never missed my weekly dosage. I have been tested over the years for my vitamin D levels and since taking D3 Max it has remained stable and good. Doctors told me to continue taking it and to keep doing what I am doing. I have lots of energy and am healthy and active."

Linda
New York

"It helps my SAD symptoms during the long, dark winters. My family doctor prescribed D some years ago and specified Maximum D3."

Steven
MISSOURI ⭐⭐⭐⭐⭐

"My labwork definitely shows an increased level of Vitamin D."

Robert
FLORIDA ⭐⭐⭐⭐⭐

"MaximumD3 has given me great confidence that I am getting the optimal opportunity to good health, and my yearly physical feedback proves it!"

Jeff
Georgia

"I have used Maximum D3 for a few years now. Love that it's made in the United States. The people are so friendly to me. I really appreciate this company. I wouldn't use any one else. They very helpful. Thank you so much."

David
Louisiana

"I like the fact that these are high quality, small size and what my doctor ordered for me. I love them and will continue to re-order."

Karen
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"I like the gel cap – for me it is easier to swallow."

Patricia
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"MaximumD3 has been a blessing to my whole family. My doctor started me on it years ago. It brought my levels back up to normal range and has kept it there. Then with the Covid outbreak my family started. Customer service is awesome, fast shipping , easy online ordering and a QUALITY product. Thank you!!"

Kathryn
Alabama

Thank you Maximum D3 team for providing an effective product that allows me to live as if I am in the sunshine every day.

Adrienne
Kentucky

"Great price for high potency D3."

St Jon
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"Love that this is made in the USA."

Busy Bee
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"Very high quality; doctor recommended this to boost D3 levels."

Brian
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"Maximum D3 is truly the best."

Sarah
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"I had low bone density. Maximum D3 keeps my bone density test normal."

PT211
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