Vitamin injections hair loss VITAMIN B12 (Generic) Injectable Solution, 1000 mcg mL, 100 mL vial Easy Refills Chewy Rx Vitamin B12 Injections (Cyanocobalamin Injections) Mountainside Medical Hair loss. Dermatologist said to take vitamin D and B12. Wear hair in ponytail for work and shower everyday but brush once a week. Does anyone have tips for hair loss and Methylcobalamin Injection 2 ml 500 mcg ml Safe Vitamin B12 Supplement for Anemia, Neurological Support, Intramuscular Administration 2 Ml 500 Mcg ml Safe Vitamin B12 Supplement For Anemia, Neurological Support, Intramuscular Administration