Common Supplements and Vitamins in Diabetes
A clear look at common vitamins and supplements, what research says and how they can mix with medicines.
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About this course
A clear look at common vitamins and supplements, what research says and how they can mix with medicines.
Shops and social media are full of supplements that promise better blood sugar. This course explains how a supplement differs from a medicine, how to judge a bold claim and what research says about popular choices like vitamin D, cinnamon and berberine.
You will also learn how some supplements can mix with your medicines and what to ask your doctor or pharmacist before you start one.
What you will learn
Medically reviewed by
Dr. Rezwana Parvin Rumpa is an obstetrics and gynaecology specialist with clinical focus on gestational diabetes, PCOS, and fertility. She holds the MRCOG (Final Part) from the Royal College of Obstetricians and Gynaecologists in London, the MRCPI (Final Part) from the Royal College of Physicians of Ireland, and an MBBS from Shaheed Monsur Ali Medical College under Dhaka University. Dr. Rumpa serves as a Senior Medical Officer in the Obs and Gynae department at BRB Hospitals Ltd, where she has spent three years managing prenatal care, emergency obstetric cases, and women's-health surgery. On Diabic, she medically reviews content for women living with diabetes, with particular attention to pregnancy, PCOS, and reproductive-health intersections.
For learning only. Talk to your doctor before changing medicine or habits.
Chapter 1: Supplements and Medicines: The Difference
Chapter 2: Judging a Supplement Claim
Chapter 3: Vitamin D and Magnesium
Chapter 4: Cinnamon, Vinegar and Berberine
Chapter 5: Chromium and Zinc
Chapter 6: Probiotics and Fiber
- National Center for Complementary and Integrative HealthProbiotics: Usefulness and Safety (opens in a new tab)
- BMJPubMed article 27301975 (opens in a new tab)
- The LancetPubMed article 30638909 (opens in a new tab)
- Dietary Guidelines for AmericansDietary Guidelines for Americans home page (opens in a new tab)
- American Diabetes AssociationAmerican Diabetes Association: Eating healthy (opens in a new tab)
Chapter 7: Interactions with Medicines
Chapter 8: Questions for Your Doctor or Pharmacist
Further reading on Diabic
- Vitamin D Supplements for Diabetes: What the Research Shows
- Magnesium Supplements and Diabetes
- Zinc Supplements for Diabetes: What to Know 2026
- Collagen Supplements for Diabetes: Worth It in 2026?
- Probiotic Supplements and Diabetes: What to Know
- Iron Supplements and Diabetes: What to Know
- 5 Apple Cider Vinegar Recipes for Diabetes
- 7 Cinnamon Recipes for Diabetes That Taste Great
- ACV
- Can a High-Fiber Diet Help Manage Diabetes
- 8 High Fiber Foods That Help with Prediabetes
- 10 High Fiber Foods for Prediabetes Worth Adding
- Whole Grains for Prediabetes: What to Choose
- Can Diabetics Eat Fruit? Yes, Best Picks and Tips
- Blood Pressure Medication and Diabetes: What to Ask