[11] Serious side effects may include anaphylaxis, and low blood potassium resulting in heart failure
B12 injections are safe and effective when administered appropriately
It may cause symptoms related to neurological failure like loss of feeling or sensation, irregular bowel movements, sleep disorder, getting irritated, feeling depressed, memory loss, Alzheimer's disease
Renue is confident enough in these tablets' ability to bypass hepatic metabolism that it's willing to underdose them significantly, but how that translates to NMN in the bloodstream, and eventually intracellular NAD+, is unclear, creating question marks for both safety and efficacy
Some rely on extra coffee or energy drinks for a quick lift, but those fixes fade fast and can disrupt sleep