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126 In a randomized controlled trial, 40 patients with tinnitus (17 of whom also had vitamin B12 deficiency with levels below 250 pg/mL) were treated with weekly intramuscular injections providing 2,500 mcg vitamin B12 or saline (placebo) for six weeks

Stomach pain or indigestion Dizziness or drowsiness Swelling at the injection site Headache or mild nausea If you experience any side effects, discuss them with your healthcare provider
Anemia in patients with Covid-19: pathogenesis and clinical significance

[5] Yaribeygi H, Sathyapalan T, Atkin SL, Sahebkar A
