A less than optimal production of red blood cells may lead to a lowered oxygen carrying capacity of the blood, resulting in poor performance and premature fatigue
However, due to its synthetic nature it is also the least bioavailable and active (Hunt, Harrington and Robinson, 2014) Methylcobalamin: The first of our non-synthetic forms of B12 is methylcobalamin, a naturally occurring co-enzyme
However, taking B12 as a shot is known to cause: PSA : Talk with a healthcare professional if you have any of these symptoms
Understanding these differences helps you identify whether your reactions stem from the tirzepatide itself or from the specific formulation you are using
That said, although side effects from vitamin B12 supplementation are very rare, it can possibly occur with B12 injections, but not with oral supplements