There's so much debate on this
doi: 119
Insurance Coverage and Accessibility in Ontario Many extended health insurance plans provide coverage for VITAMIN INJECTIONS when prescribed by qualified healthcare providers for documented deficiency conditions
Slides containing retinal sections were deparaffinized by immersing the slides in various subsequent ethanol dilutions(100%, 95%,70% and 50%), then rinsed with phosphate-buffered saline, pH 7.4 (PBS, Quality Biological, 119-069-101), followed by incubation in blocking buffer containing 0.5% normal donkey serum (Abcam, ab7475), 0.5% bovine serum albumin (BSA, GoldBio, A-420-100), 0.1% Triton X-100 (Sigma, T8787-100) in PBS pH 7.4 for 2 h at room temperature 28
And he says that his routine often includes probiotic supplements