The role of methylation in human health and disease is an explosive area of research, evolving all the time, and an excellent example of the power to use environmental exposures, diet, and supplementation to reclaim control over your health.
You are genetically designed to heal. Your physiology is designed to overcome and to make you stronger. Disease is merely the result of living a lifestyle that is incompatible with life and longevity. Even fatal diseases can resolve with lifestyle-based medicine.
Cyanide is found in a wide range of vitamins and foods in a form known as cyanocobalamin, which because it is bound to cobalamin (vitamin b12), significantly reduces the potential for the cyanide to do harm. Cyanocobalamin is actually found in 99% of the vitamins on the market, as it is relatively cheap (recovered from activated sewage sludge or produced through total chemical synthesis), and stable (non-perishable).