Tip - The Best Places to Give Vitamin B12 Injections | LIVESTRONG.COM

Injectable vitamin B12, or cyanocobalamin, is used to treat or prevent deficiencies in people who are unable to absorb the oral form from the intestines. Although vitamin B12 can be injected under the skin, the preferred method is the intramuscular route. This means the medication is injected deep into muscle through a needle. Several muscles can...