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Baseline hypertension or tachycardia are contraindications
What is the difference between cyanocobalamin and hydroxocobalamin B12 formulations
Nutritional factors are important, but other things can also cause or make tinnitus worse
They all originate, in one way or the other, from inside the head, and they are all known as tinnitus
Once symptoms improve, a lower dose might be used
Several studies have indicated that the efficacy of oral vitamin B12 supplements is comparable to that of vitamin B12 injections
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