The vitamins in the patch will enter your body through your skin and make its way into your bloodstream. Vitamin b12 transdermal patch is attached to your skin and allows you to absorb vitamin b12 without taking the oral supplement or the vitamin b12 shots. Vitamin B12 Patch - Best Value 16 Patches - Up To 4 Month Supply - High Quality 1200 Mcg Methylcobalamin 400 Mcg Folic Acid - Your Satisfaction Or Risk Free 100 Statistically significant lower postoperative serum concentrations of vitamin d, b1, and b12 were seen in the patch group. Do vitamin b patches work . It proves effective for patients over the. According to marketing ploys, you can get your daily dose of vitamins simply by putting on a patch on your skin. These patches are usually tiny and are applied right behind your ear. Many people have reviewed the patches from different companies to be working great. Multivitamin patch users are more likely to have vitamin d deficiency and lower serum concentration of vari...