However, it is best to follow guidelines from a healthcare professional
The product marketed as TB-500 is a synthetic peptide fragment specifically the acetylated actin-binding heptapeptide Ac-LKKTETQ , corresponding to roughly residues 1723 of thymosin beta-4 (T4), a naturally occurring 43-amino-acid protein
However, side effects can occur
Fatigue is listed as a common adverse reaction (occurring in 5% of patients) in the FDA prescribing information for both Wegovy (semaglutide 2.4 mg) and Zepbound (tirzepatide), and occurred more frequently than with placebo in clinical trials

It includes 1-5 intramuscular or subcutaneous injections of 1000 mcg crystalline cyanocobalamin daily, followed by oral doses of 1000-2000 mcg/day Parenteral administration should be reserved for those with significant neurological symptoms NICE guideline: Vitamin B 12 deficiency in over 16s: diagnosis and management: Malabsorption as the confirmed or suspected cause of vitamin B 12 deficiency: Offer replacement to people if: lifelong intramuscular vitamin B12 Autoimmune gastritis is the cause They have had a total gastrectomy They have had a complete terminal ileal resection If the person has a vitamin B 12 deficiency because of malabsorption that is not caused by autoimmune gastritis, or a total gastrectomy or complete terminal ileal resection (for example, malabsorption caused by coeliac disease, partial gastrectomy or some forms of bariatric surgery): Offer vitamin B 12 replacement and Consider intramuscular instead of
Journal of Applied Physiology