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What Is the Vitamin B6 Upper Limit, and Where Does 12 mg Fall?
The vitamin B6 upper limit for adults is 100 mg a day from food, fortified foods and supplements together. The Reviralis Complete label prints 12 mg of B6 for two capsules, which is 706% of the Daily Value but about 12% of that limit. The risk is stacking several products over months, not one label.
Written by the Goreviralis label deskUpdated · 5 min read
What is the vitamin B6 upper limit for adults?
The vitamin B6 upper limit for adults is 100 mg a day, counting every source. An adult needs only about 1.3 mg a day up to age 50 (NIH ODS, Vitamin B6).
Picture a pharmacy shelf: a multivitamin with 2 mg, a "B-complex" with 50 mg. Neither looks alarming alone. Added up, they climb toward the line that matters.
The upper limit is the highest daily amount that is unlikely to cause harm in most adults. It is not a goal, and it does not mean harm starts the moment you pass it.
How does 12 mg on the Reviralis label compare?
It is roughly nine times the daily need and about one eighth of the limit. The label prints vitamin B6 (as pyridoxal phosphate) 12 mg per serving of two capsules.
The "706%" on the panel only compares 12 mg with a small daily target. The next table shows the same amount against the numbers that matter.
| Measure | Amount | 12 mg as a share |
|---|---|---|
| Label amount, two capsules | 12 mg | 1.0 times |
| Adult need, ages 19 to 50 | 1.3 mg | about 9 times |
| Upper limit, adults | 100 mg | 12% |
| Headroom left under the limit | 88 mg | from all other sources |
Take out your own list of vitamins first. The 88 mg of room is shared with everything else you swallow.
What do nerve effects from too much B6 look like?
Long-term high intakes of B6 can damage sensory nerves, and that is the reason the limit exists (NIH ODS, Vitamin B6).
Sensory nerves carry touch and position. Trouble with them shows up as changes in feeling in the hands or feet. Anyone who notices new numbness, tingling or unsteady walking should tell a clinician and bring every bottle they take. The same source says the problem tracks high amounts taken for a long time, which is why one capsule of ordinary strength is not the worry.
- Count B6 from every product, including energy drinks and B-complex tablets.
- Check the label for "pyridoxine" and "pyridoxal phosphate". Both are B6.
- Write down how long you have taken each product, since duration counts as well as dose.
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See packsHow do you add up B6 from several products?
Type in what your other products print and compare the total with 100 mg. The checker below adds the Reviralis label amounts first.
- 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.
Bring the bottles and ask: "Does anything I take also contain B6, and does my prescriber want me to limit it?" Some seizure medicines change how the body handles B6, so a prescriber should hear about every vitamin. Keep taking prescribed medicine, including any antiviral, unless your prescriber says otherwise. The label's own caution lists seizures and prescription medicine, and no source we read tested Reviralis itself.
More on the other printed amounts is on the supplement facts page, and the percent math is in what 706 percent daily value means.
FAQ01
Vitamin B6 limit questions
How much vitamin B6 is too much per day?
For most adults, 100 mg a day from all sources is the upper limit. Intakes well above it, taken for long periods, are linked to sensory nerve damage. Needs are only about 1.3 mg, so the gap is wide, but several products can close it.
Is 12 mg of vitamin B6 a high dose?
It is high compared with the 1.3 mg a day an adult needs, and that is why the label shows 706% of the Daily Value. It is still about an eighth of the 100 mg upper limit. Stacking with other B6 products is what changes the picture.
Can B6 from food reach the upper limit?
Ordinary meals supply a few milligrams, far below 100 mg. Reaching the limit takes supplements, often several at once, which is why labels and running totals matter more than any single meal.
What should I do if my feet feel numb and I take B6?
Tell a clinician soon and bring the bottles. Numbness has many causes, and a clinician can sort them out. Do not change prescribed medicine on your own. Call 911 for trouble breathing, a seizure, chest pain or sudden confusion with a severe headache.
Who wrote this02
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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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