The most common side effect is some soreness at the injection site, and you might notice your urine turning bright yellow (thats just the excess vitamins, particularly riboflavin, being excreted)
B-100 Vitamin B Complex Injection 1ml Ampoule $16.49 As low as $14.02 Buy 4 or more & Save 10% Order 1=10 2=20 , 3=30 , 4=40 , 5=50 Ampules Each 1ml contains the Vitamins B1 - B2 - B3 - B6 Vitamin B1 (Thiamine) 100mg Vitamin B2 (Riboflavin) 0.5mg Vitamin B3 Nicotinamide (Active form of B3) 100mg Vitamin B6 (Pyridoxine) 1mg 1 dose per ampoule For Intramuscular and Intravenous injection EXPIRE: FEB 2028 GMP & PIC/S Quality is Guaranteed 10.00 Flat fee shipping, avg
Finally, a doctor tested for Intrinsic Factor Anti-body, which prevents B12 absorption
Storage Instructions For optimal stability, 5-Amino-1MQ should be stored in a cool, dry environment, protected from excessive heat, moisture, and light