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ZINC & B12 - Zinc deficiencies may contribute to the presence of canker sores which is why we were sure to add the vital mineral to our canker sore gel. Research suggests B12 can help reduce the frequency of canker sores.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.