should b12 be injected subcutaneously or intramuscularly Optimal Injection Sites for Maximum Absorption and Benefits VITAMIN B12 INJECTION 1000 mcg/mL

23, 27 Vitamin B 12 Early treatment of B 12 deficiency is particularly important because neurologic symptoms may be irreversible

The payoff is near-complete absorption well beyond what a pill or sports drink offers

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To help relieve these symptoms, you can apply a cold compress to the area for short intervals, which may reduce swelling and provide soothing relief