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Ascorbic acid is found naturally in many fruits and vegetables, especially citrus fruits, kiwi, broccoli, tomatoes, leafy vegetables, potatoes, brussels sprouts, raw bell peppers and strawberries

While theoretically possible with any injectable peptide, the risk appears to be extremely low

Retrieved May 6, 2025, from National Institutes of Health, Office of Dietary Supplements

Previous research has shown that GPx1 is an effective antioxidant enzyme that cannot be replaced by any other selenoprotein to protect against generalized oxidative stress [74,75,76]

While a B12 supplement may not cause harm, Dietary Guidelines for Americans, a government publication that provides nutrition advice to the public, recommends getting most nutrients primarily from food and beverages