Is 100 mg of vitamin B6 too much?
100 milligrams of vitamin B6 is right at the adult upper limit of 100 milligrams a day. That is about 77 times the adult RDA of 1.3 milligrams.
General information, not medical advice. Check with a doctor or pharmacist before taking a supplement, especially if you are pregnant or breastfeeding, take any medicine, or are under 18.
In the UK
100 milligrams of vitamin B6 is above the NHS guidance of 10 milligrams a day from supplements (unless a doctor advises more). In the UK, adults need 1.4 milligrams a day for men and 1.2 milligrams for women. Doctors sometimes advise more for a set time, so check with yours before taking this much.
The figures
| US (NIH) | UK (NHS) | |
|---|---|---|
| Amount checked | 100 mg | |
| Answer | At the upper limit | Above NHS guidance |
| Compared with | 100 milligrams a day | 10 milligrams a day from supplements |
| Share of the limit | 100% of the limit | 1000% of the limit |
| Adults need | 1.3 milligrams a day, rising to 1.7 for men and 1.5 for women over 50 | 1.4 milligrams a day for men and 1.2 milligrams for women |
Good to know
- Taking more than the upper limit for a long time can cause nerve problems.
Quick answers
- Is 100 mg of vitamin B6 too much?
- 100 milligrams of vitamin B6 is right at the adult upper limit of 100 milligrams a day. That is about 77 times the adult RDA of 1.3 milligrams.
- What does the NHS say about 100 mg of vitamin B6?
- 100 milligrams of vitamin B6 is above the NHS guidance of 10 milligrams a day from supplements (unless a doctor advises more). In the UK, adults need 1.4 milligrams a day for men and 1.2 milligrams for women. Doctors sometimes advise more for a set time, so check with yours before taking this much.
- What is the upper limit for vitamin B6?
- US: 100 milligrams a day. UK (NHS): 10 milligrams a day from supplements.
Sources
- NIH Office of Dietary Supplements fact sheet
https://ods.od.nih.gov/factsheets/VitaminB6-HealthProfessional/ - NHS vitamins and minerals guidance
https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-b/
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