how to inject b12 shots in your abdomen Methylcobalamin Intramuscular Self How to Self-Inject Vitamin B12
Description
High doses of Vitamin C taken within 1 hour of the shot may lower B12 in blood (minor, stagger doses)

Goiter An enlargement of the thyroid is often caused by iodine deficiency or other underlying thyroid issues

Allergic reactions to individual components are possible, though uncommon
Typical GHK-Cu protocols run 4-8 weeks followed by equivalent off periods
