Vitamin B12 is a water-soluble vitamin that supports: Red blood cell production Nervous system function DNA synthesis Energy metabolism B12 injections deliver this essential nutrient directly into the bloodstream, bypassing absorption issues that come with oral supplements
Choline, for example, is involved in lipid transport and metabolism (a vital part of energy storage), cell membrane signaling, and nervous system function
This depends on individual goals and health conditions
If dietary sources are insufficient, B12 supplementation can help maintain optimal levels
However, if a gland is no longer functioning due to surgical removal or advanced ovarian failure, peptides alone may not be sufficient, and direct hormone replacement may still be necessary