B Vitamin Supplements
Taking very high doses of niacin can cause symptoms resembling anaphylactic shock, as was recently reported. Get the details in the Niacin section of our B Vitamin Supplements Review.
B-12 deficiency can cause severe symptoms, even when B-12 levels in the blood are not low, as shown in a recent case. Find out why, and which tests can help, in the B-12 section of our B Vitamin Supplements Review.
People with a certain MTHFR gene mutation (C677T) may be more likely to develop B vitamin deficiencies. But what about those with a less common MTHFR mutation – A1298C? Find out what research suggests in the MTHFR gene mutation and B vitamin metabolism section of our B Vitamin Supplements Review.
Raising lower blood levels of vitamin B-12 may help with nighttime leg cramps according to some reports. Get the details in the B-12 section of our B Vitamin Supplements Review.
For information about other supplements that may help, see our answer to the question: Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?
Correcting B-12 deficiency may improve cognition in people with dementia, according to a recent study and case reports. Get the details in the Memory, Cognition, and Alzheimer’s Disease section of our B Vitamin Supplements Review.
Also see our answer to the question: Do supplements help with Parkinson's disease treatment or prevention?
Also see our Top Pick among prenatal vitamins, which provides adequate (but not too much) folic acid, in our Multivitamin and Multiminerals Supplements Review.
CL has long warned that energy drinks and shots often contain large amounts of B6 and other B vitamins.
For more information, see ConsumerLab's answer to the question, I take omeprazole (Prilosec), a proton pump inhibitor, to reduce stomach acid. Are there supplements I should avoid, or be taking, due to this drug?.
For more details, see the updated reviews of B Vitamin Supplements & Energy Drinks and Protein Powders, as some of these products contain L-carnitine. The Acetyl-L-Carnitine Supplements review has also been updated because acetyl-L-carnitine is chemically similar to L-carnitine, suggesting a potential concern.