All the advice we share on our website is specific to topical application
Extra caution is appropriate in patients with active cancer, recent cancer, unexplained masses, unexplained weight loss, pregnancy, breastfeeding, known allergy to peptide products, active infection, immune compromise, significant liver or kidney disease, active inflammatory or autoimmune disease flares, unusual clotting history, uncontrolled cardiovascular disease, use of chemotherapy or immune-modifying biologic therapy, and competitive athletes subject to anti-doping rules
If you have risk factors or these symptoms, your doctor may recommend testing for vitamin B12 deficiency
The maximum amount that can be ordered is a three month supply of medication based on your prescription
doi: 10.1111/jnc.13963