Do your two supplements get along?
Pick two supplements: the check shows whether berryl has a note on them, for example on calcium and iron or zinc and copper, briefly explained and with sources. The same rules as in the berryl app.
- Free, no sign-up
- Runs only in your browser
- Calculates like the berryl app
How the calculator works
- The check uses the berryl app’s rules between two nutrients from supplements, with the same thresholds: some notes only appear from a certain daily amount, for example zinc and copper from 40 mg of zinc a day. If you enter the amount, the check tells you whether it is below that.
- Only supplements are checked against each other.
- The app also checks whether both products are planned for the same time of day and adds up amounts across several products.
- If berryl has no note for a combination, that does not mean there is definitely no interaction.
Information, not advice: the notes describe what studies show. They are not a suggestion to take, drop or change anything. If you have questions, ask your doctor.
In the berryl app you set up your routine once. The app then checks all your supplements against each other and briefly shows what gets in each other’s way. More on this: Supplement interactions.
More free calculators: Calorie calculator, Protein calculator, 1RM calculator, Upper limit check. All calculators
Sources
- Hallberg et al. (1991): Calcium: effect of different amounts on nonheme- and heme-iron absorption in humans. Am J Clin Nutr
- Minihane & Fairweather-Tait (1998): Effect of calcium supplementation on daily nonheme-iron absorption and long-term iron status. Am J Clin Nutr
- Sandström (2001): Micronutrient interactions: effects on absorption and bioavailability. Br J Nutr
- Wood & Zheng (1997): High dietary calcium intakes reduce zinc absorption and balance in humans. Am J Clin Nutr
- de Baaij et al. (2015): Magnesium in man: implications for health and disease. Physiol Rev
- Hardwick et al. (1991): Magnesium absorption: mechanisms and the influence of vitamin D, calcium and phosphate. J Nutr
- Morris et al. (2007): Folate and vitamin B-12 status in relation to anemia, macrocytosis, and cognitive impairment in older Americans. Am J Clin Nutr
- Solomons (1986): Competitive interaction of iron and zinc in the diet. J Nutr
- Rossander-Hultén et al. (1991): Competitive inhibition of iron absorption by manganese and zinc in humans. Am J Clin Nutr
- Cook & Monsen (1977): Vitamin C, the common cold, and iron absorption. Am J Clin Nutr
- Heaney et al. (2003): Calcium absorption varies within the reference range for serum 25-hydroxyvitamin D. J Am Coll Nutr
- Booth et al. (2004): Effect of vitamin E supplementation on vitamin K status in adults with normal coagulation status. Am J Clin Nutr
- Duncan et al. (2015): The risk of copper deficiency in patients prescribed zinc supplements. J Clin Pathol
- Fischer et al. (1984): Effect of zinc supplementation on copper status in adult man. Am J Clin Nutr
- Linus Pauling Institute, Micronutrient Information Center: Calcium, Iron, Magnesium, Zinc, Folate, Vitamin D, Vitamin E
Ready for your day with berryl?
berryl launches on Android first, iPhone follows. Start free, no subscription needed.