Mecobalamin (METHYCOBAL®) is a clear, red liquid containing the following ingredients.

Ingredients Content per ampoule (1 mL)
Active ingredient Mecobalamin (JAN/INN) 500 mcg
Inactive ingredient D-Mannitol 50 mg
Product description Methycobal is a clear, red liquid contained in brown ampoule    (one-point-cut type)
pH 5.3-7.3
Osmotic pressure ratio about 1 (ration relative to isotonic sodium chloride solution)