Frequently Asked Questions Should I take B12 before starting tirzepatide, or wait to see if I develop a deficiency
Many people feel a noticeable energy lift within hours of their B12 injection, with the maximum benefit usually appearing one to two days later
However, for B12, if any part of that complex digestive process is compromised especially the intrinsic factor or the absorption sites in the intestine then a significant portion of the B12 from a tablet might never reach your bloodstream
The exact dosage, however, should always be determined by a healthcare professional based on individual health assessments
They may suggest a blood test if its not clear whether youre actually low on B12
A physician, however, will be familiar with the potential dangers and can decide whether to prescribe B12 shots based on his or her knowledge of the patients medical history