According to studies, there are no side effects or toxic effects from using BPC 157 (Chang CH, 2011)

one limited ulcerative-colitis meeting abstract What has been observed Protective and healing effects in experimental gastrointestinal injury models What remains unknown Whether it is effective or safe for any human gastrointestinal condition Tendons and ligaments Evidence available Mainly animal studies and reviews What has been observed Changes in healing markers and tissue organisation in experimental injuries What remains unknown Whether it improves pain, function or healing time in people Muscle and bone Evidence available Mainly animal studies What has been observed Experimental findings involving muscle injury and bone repair What remains unknown Human effectiveness, appropriate formulation, long-term safety and meaningful clinical outcomes Wounds and blood-vessel signalling Evidence available Laboratory and animal research What has been observed Proposed effects involving angiogenesis, nitric oxide and fibroblast activity What remains unknown Whether these mechanisms translate into a net human benefit or introduce other risks Pain and urological symptoms Evidence available Very small exploratory human reports What has been observed Preliminary observations in limited groups What remains unknown Reliability, placebo effect, comparative effectiveness and safety General safety Evidence available Small, short human exposures plus animal toxicology What has been observed No clear safety profile can be established from the available data What remains unknown Immune reactions, impurities, interactions, long-term effects and route-specific risks How strong is the human evidence

To find out whether a B12 shot will help relieve your chronic problems with fatigue, lets examine what a vitamin B12 deficiency is, how it leads to fatigue, and how much B12 you need to stay healthy
And again, it will start with "what are you eating today," like, I'm going to give you some fancy stuff, and then I'm going to send you to neurosurgeons, and we're going to do lots of systemic treatments