Like the older B1 myth, the broader B-complex sweat-repellent claim is not supported by controlled trials.
B
Steps
schema.org/HowTo
01
DO NOT take megadose B-complex vitamins as a tick repellent strategy.
02
The purported mechanism, that B vitamins excreted in sweat repel arthropods, has been tested and is not supported by peer-reviewed entomology research.
03
Large doses of some B vitamins can also cause flushing or nerve symptoms.
04
Instead, use a registered topical repellent on skin and treat clothing with permethrin.
05
Save the vitamins for actual nutritional deficiencies under a clinician's guidance.