Understanding the interactions, benefits, and safety of combining these two powerful supplements.
We found no documented interaction between Calcium and Vitamin B12 in the sources below. That isn't proof the combination is right for you: check each one's cautions, and ask your pharmacist if you take medication.
What it is: The body's most abundant mineral; it builds bones and teeth and helps muscles, nerves and blood vessels work.
What the research says: Calcium supports bone health, especially when diet falls short. Vitamin D helps the body absorb it.
In Holitro: Calcium Citrate (160 mg per capsule)
Source: NIH Office of Dietary Supplements: Calcium: Fact Sheet for Consumers (updated September 2023)
What it is: A vitamin that keeps blood and nerve cells healthy and helps make DNA.
What the research says: B12 prevents a type of anemia that makes people tired and weak. People who take metformin or long-term acid reducers may absorb less of it.
In Holitro: Vitamin B12 (1000 mcg per capsule)
Source: NIH Office of Dietary Supplements: Vitamin B12: Fact Sheet for Consumers (updated December 2023)
Check with your doctor or pharmacist, especially if you take medication.
Check your stack — freeEducational information only, not medical advice. This reflects general ingredient overlap, not a personalized safety review. Always check with your doctor or pharmacist before combining supplements, especially if you take medication, are pregnant or nursing, or manage a health condition. These statements have not been evaluated by the FDA.
Balancing dosages across multiple different bottles is risky, inefficient, and expensive. Taking too much of one can blunt the absorption of the other.
Holitro completely solves this. We combine synergistic ingredients into one perfectly dosed daily pack, scientifically formulated for maximum absorption.
