The patent covering the molecule was filed in 1990, which means it expired in 2011
Aneta Manda-Handzlik et al
Research indicates that methylcobalamin has superior tissue retention compared to synthetic forms, meaning it stays in the body longer to support continuous nerve repair and homocysteine reduction
But there are many people, like the president, who are very active in their eighties and maintain a busy schedule, and they do fine with it. Without having the presidents detailed medical history, Lee raised concerns about the presidents weight, particularly as he suffers from chronic venous insufficiency, a common condition among older people that occurs when leg veins struggle to send blood back to the heart, causing it to pool
Symptoms like confusion, shakiness, and sweating may be mistaken for alcohol intoxication, delaying recognition of a genuine medical emergency