What are Optimal Zinc Capsules derived from? Ceylon Keeslar September 29, 2016 23:43 Updated Follow The zinc and vitamin B6 are synthetic. The vitamin C is derived from corn. Related articles What is SAMe derived from? Are there any side-effects or precautions when using Optimal Zinc Capsules? Can Optimal Zinc Capsules be used for children? What are Optimal Zinc lozenges derived from? Comments 0 comments Article is closed for comments.