57d50aa9_Health_Information_Library__Why
[Used for] 2 Stars Tooth Decay For adults: 20 mg per day in capsules or lozenges; for children: 9 mg daily [Why] 
Vitamin B6 appears to increase growth of beneficial mouth bacteria and decrease growth of cavity-causing bacteria. Test tube studies show that vitamin B6 increases growth of beneficial mouth bacteria and decreases growth of cavity-causing bacteria.108 A double-blind study found that pregnant women who supplemented with 20 mg per day of vitamin B6 had significantly fewer new caries and fillings during pregnancy.109 Lozenges containing vitamin B6 were more effective than capsules in this study, suggesting an important topical effect. Another double-blind study gave children oral lozenges containing 3 mg of vitamin B6 three times per day for eight months, but reported only insignificant reductions in new cavities.110
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