alcar vs l carnitine The Difference Between L-Carnitine & Acetyl L-Carnitine – Swanson Vitamins Acetyl-L-Carnitine – Core Nutritionals

If you know for sure that you only take B12, swallowing or injection, and you get anxiety or heart palpitations, consider taking a much smaller dose

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While some studies have not found a similar effect in Hepatitis B surface antigen (HBsAg)-seropositive patients regarding ALT levels, other research indicates an increased risk of cirrhosis in HBV carriers who smoke 20 or more cigarettes per day, an effect that is particularly pronounced when combined with habitual alcohol consumption [85, 86]

However, your provider may adjust the frequency based on your specific needs and B12 levels