Biotin is also known as vitamin B7. It is found in peanuts, leafy green veggies and egg yolks. It is naturally produced by healthy intestinal bacteria. Smoking and drinking can deplete it. Thanks to Sandro for this link.
All of these ideas can be found in the Endothelial Health Program, which recommends probiotics, B vitamins, dietary increases in leafy veggies, and smoking cessation. It's not a pill, it's a lifestyle. Joan http://ccsvi.org/index.php/helping-myself/endothelial-health


High doses of biotin in chronic progressive multiple sclerosis: A pilot study. - PubMed - NCBI
www.ncbi.nlm.nih.gov
Mult Scler Relat Disord. 2015 Mar;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. Epub 2015 Jan 24.