If you experience this side effect, you may wish to consider taking an alternative collagen product." So, taking collagen could make you feel icky, almost like if you were sick due to this side effect
Peripheral Neuropathy (Tingling and Numbness): Methylcobalamin provides the essential building blocks for myelin sheath repair, helping to physically regenerate damaged peripheral nerves and reduce the sensations of burning, tingling, or "pins and needles" in the extremities
Reports in the scientific literature show the following possible uses: Detox it is a natural detoxification treatment scavenging free radicals Pulmonary disease it may help with COPD, Lung fibrosis and other lung ailments Neurological Disease may help with Altzheimers, memory problems,increase mental clarity Skin Diseases it may help with acne, dark spots and other pigmentation problems Liver Disease it is sometimes used in liver transplantation, cirrhosis, other liver ailments In other words, IV glutathione has many postive effects for various organ systems
Codrich, et al