Ingredient group 3 of 8
Magnesium Oxide 50 mg, Calcium, Iron and Potassium in Reviralis
Reviralis prints four major minerals per two capsules: magnesium oxide 50 mg, calcium carbonate 20 mg, ferrous fumarate iron 1 mg and potassium citrate 50 mg. All four are small next to the daily need, at 1% to 12% of the Daily Value. Iron still calls for care around children. No source ties these minerals to herpes outbreaks.
Written by the Goreviralis label deskUpdated
The four minerals01
Which major minerals are on the Reviralis label?
Four: magnesium (as oxide) 50 mg, calcium (as carbonate) 20 mg, iron (as ferrous fumarate) 1 mg and potassium (as citrate) 50 mg, per two capsules.
These are the minerals the body needs in the largest amounts, yet the capsules hold only a sliver of each. Magnesium is 12% of the Daily Value, iron 6%, calcium 2% and potassium 1%. Needs and limits come from NIH (NIH ODS, Magnesium) (NIH ODS, Calcium).
| Name on the label | Calcium (as Calcium Carbonate) 20 mg, 2% DV |
|---|---|
| What it is | A mineral, as calcium carbonate |
| Place on the label | Its own line, amount printed |
| Amount per 2 capsules | 20 mg per 2 capsules, printed (2% of the Daily Value) |
| Daily need or amount used in research | Adults need 1,000 to 1,200 mg a day; the upper limit is 2,000 to 2,500 mg |
| Upper limit for adults | Upper limit 2,000 to 2,500 mg |
| Strength of evidence | Essential mineral; 20 mg is a trace next to the daily need |
| Main caution | Calcium can block absorption of thyroid hormone and some antibiotics if taken at the same time. At 20 mg this is a small effect, but spacing is still a pharmacist question. |
| Name on the label | Iron (as Ferrous Fumarate) 1 mg, 6% DV |
|---|---|
| What it is | A mineral, as ferrous fumarate |
| Place on the label | Its own line, amount printed |
| Amount per 2 capsules | 1 mg per 2 capsules, printed (6% of the Daily Value) |
| Daily need or amount used in research | Adults need 8 mg (men) or 18 mg (women 19 to 50) a day; the upper limit is 45 mg |
| Upper limit for adults | Upper limit 45 mg |
| Strength of evidence | Essential mineral; 1 mg is a small share of the need |
| Main caution | Iron products are a leading cause of poisoning in young children, so keep every bottle out of reach. Iron can cut the absorption of thyroid hormone. |
| Name on the label | Magnesium (as Magnesium Oxide) 50 mg, 12% DV |
|---|---|
| What it is | A mineral, as magnesium oxide |
| Place on the label | Its own line, amount printed |
| Amount per 2 capsules | 50 mg per 2 capsules, printed (12% of the Daily Value) |
| Daily need or amount used in research | Adults need 400 to 420 mg (men) or 310 to 320 mg (women) a day; the upper limit from supplements is 350 mg |
| Upper limit for adults | Upper limit 350 mg from supplements |
| Strength of evidence | Essential mineral; 50 mg is an eighth of the need |
| Main caution | Magnesium can lower the absorption of some antibiotics, thyroid hormone and bone medicines taken at the same time. Doses over 350 mg can cause diarrhea. |
| Name on the label | Potassium (as Potassium Citrate) 50 mg, 1% DV |
|---|---|
| What it is | A mineral, as potassium citrate |
| Place on the label | Its own line, amount printed |
| Amount per 2 capsules | 50 mg per 2 capsules, printed (1% of the Daily Value) |
| Daily need or amount used in research | Adults need 2,600 to 3,400 mg a day; no upper limit is set for healthy people |
| Upper limit for adults | No upper limit set |
| Strength of evidence | Essential mineral; 50 mg is about 1% of the need |
| Main caution | Supplements are kept small by FDA policy because larger doses can disturb heart rhythm in people on certain heart or kidney medicines. 50 mg is small. |
Magnesium02
Is magnesium oxide 50 mg a meaningful dose?
It is an eighth of what adults need, and about 14% of the 350 mg supplement limit.
Men need 400 to 420 mg a day and women 310 to 320 mg. Magnesium oxide is the form with the lowest absorption, so the body takes in even less than 50 mg. Doses over 350 mg from supplements can cause diarrhea. Magnesium can also lower the absorption of some antibiotics and bone drugs taken at the same time, which is a spacing question for your pharmacist (NIH ODS, Magnesium).
Iron03
Is ferrous fumarate iron 1 mg a concern?
The amount is small, 1 mg against a 45 mg adult limit, but any iron product must stay away from children.
Iron overdose is a leading cause of poisoning in young children (NIH ODS, Iron). That risk comes from a bottle in the wrong hands, not from the 1 mg in two capsules. The label says to keep it out of reach, and a high shelf is not enough. Adults need 8 mg (men) or 18 mg (women aged 19 to 50). Vitamin C in the same capsules helps iron absorption slightly.
Calcium and potassium04
What do calcium carbonate 20 mg and potassium citrate 50 mg add?
Almost nothing toward the daily need: calcium is 2% of the Daily Value and potassium 1%.
Adults need 1,000 to 1,200 mg of calcium and 2,600 to 3,400 mg of potassium. Calcium can block thyroid hormone and some antibiotics, though 20 mg is a small effect (NIH ODS, Calcium). Potassium supplements are kept small by FDA policy because larger doses can disturb heart rhythm in people on certain medicines (NIH ODS, Potassium). The blend's licorice can also lower potassium, a separate point covered with the herbs.
Keep taking every prescribed medicine, including any antiviral, unless your prescriber says otherwise. See a clinician for a diagnosis, because other conditions look like herpes. Call 911 for trouble breathing, a seizure, chest pain, swelling of the face or throat, or sudden confusion with severe headache and stiff neck.
Reviralis: from $49 a bottle60 capsules a bottle · 2, 3 or 6 bottles · free US shipping on 3 and 6 · 60-day money-back guarantee
See packsAdding it up05
How do these minerals add up with my other supplements?
Enter your other products below to see the combined total against each limit.
- Vitamin B612 mg a day (12 mg from Reviralis)
At or under the 100 mg adult upper limit for Vitamin B6.
- Zinc10 mg a day (10 mg from Reviralis)
At or under the 40 mg adult upper limit for Zinc.
- Selenium50 mcg a day (50 mcg from Reviralis)
At or under the 400 mcg adult upper limit for Selenium.
- Niacin12.5 mg a day (12.5 mg from Reviralis)
At or under the 35 mg adult upper limit for Niacin.
- Folic acid400 mcg a day (400 mcg from Reviralis)
At or under the 1000 mcg adult upper limit for Folic acid.
- Magnesium (from supplements)50 mg a day (50 mg from Reviralis)
At or under the 350 mg adult upper limit for Magnesium.
Type the amounts printed on any multivitamin or other supplement you take.
Upper limits for adults from NIH ODS and the National Academies: B6 100 mg, zinc 40 mg, selenium 400 mcg, niacin 35 mg (supplements), folic acid 1,000 mcg, magnesium 350 mg from supplements (NIH ODS, Vitamin B6) (NIH ODS, Zinc) (NIH ODS, Folate). A checking aid, not medical advice. The 12 mg of B6 on this label is 706% of the Daily Value but about an eighth of the limit.
Keep reading06
Where do I go after the major minerals?
Next come the trace minerals, then the 661 mg blend.
The medicine check covers spacing with antibiotics and thyroid pills.
FAQ07
Questions about magnesium, calcium, iron and potassium in Reviralis
How much magnesium is in Reviralis?
Reviralis prints magnesium oxide 50 mg per two capsules, which is 12% of the Daily Value. That is about 14% of the 350 mg supplement upper limit. Adults need 310 to 420 mg a day.
Does Reviralis contain enough calcium for bones?
No. It prints 20 mg of calcium carbonate, which is 2% of the Daily Value. Adults need 1,000 to 1,200 mg a day, so food or a dedicated calcium product would have to supply the rest.
Can the iron in Reviralis harm a child who swallows capsules?
Possibly. Iron products are a leading cause of poisoning in young children, and the bottle holds many capsules. Lock it away and call poison control right away if a child swallows any.
Does potassium citrate 50 mg matter?
Very little. It is 1% of the Daily Value, and adults need 2,600 to 3,400 mg a day. Ask a pharmacist if you take a heart or kidney medicine that raises potassium.
Should I space Reviralis from antibiotics?
Ask your pharmacist. Magnesium and calcium can lower the absorption of some antibiotics and thyroid hormone, and the label tells you to check with your provider if you take prescription medicine.
Do major minerals help herpes outbreaks?
No source we found shows that. NIH's complementary health center has not found a supplement that prevents or treats herpes outbreaks, and antivirals are the proven care.
Who wrote this08
Written and reviewed by
Pages built from the label, the sales page and linked NIH, CDC, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Reviralis. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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