If repelling mosquitoes was as easy as taking a pill or two a day, mosquitoes would be extinct due to starvation.  Everyone would keep to a strict Vitamin B schedule, no doubt about it.  Unfortunately, disappointing those small bloodsuckers takes more than a pill regimen.  Maybe one day… Sources 1 – ncbi.nlm.nih.gov –  “Although there was substantial and consistent individual variation in attractiveness, we found no effect of vitamin B supplementation.” 2 – nytimes.com –  “Studies dating to the 1960s suggest that taking small doses of the supplement three times a day during biting season helps to produce a skin odor that mosquitoes find repulsive.” 3 – smithsonianmag.com –  “Blood type, metabolism, exercise, shirt color and even drinking beer can make individuals especially delicious to mosquitoes.” 4 – nationalpost.com –  “In recent years, though, nonmedicinal vitamin patches have flooded the market, with companies selling pricey cocktails of “supplements” that promise to help ease the effects of conditions including acne, insomnia, poor focus, premenstrual syndrome, hangovers, weight gain and stress.” 5 – ncbi.nlm.nih.gov –  “The Food and Drug Administration regulates dietary supplement quality, safety, and labeling, and the Federal Trade Commission monitors advertisements and marketing; still, vast enforcement challenges remain, and optimal governmental oversight has not been achieved. If the composition and quality of ingredients cannot be reliably ensured, the validity of research on dietary supplements is questionable. Moreover, the health of the US public is put at risk.”