What are the side effects of flex a min triple strength vitamin Flex-A-Min Glucosamine Chondroitin Msm Tablets Triple Strength?

Should be none. Glucosamine and chondroitin are both quite safe for joint cartilage, and may have some benefits.
"Neutraceutical" It's best to enquirer of the manufacturer; there is no independent vetted databank to give you a reliable answer.