According to the manufacturer, the usual daily recommended amounts of methylcobalamin, vitamin B12 for lactating women should be taken maternally during breastfeeding (see Dosage)

Ingredients : Water, Ethylhexyl Methoxycinnamate, Butylene Glycol, Ethylhexyl Salicylate, Octocrylene, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane, Dipropylene Glycol, Niacinamide (20,000ppm), Squalane, C14-22 Alcohols, 1,2-Hexanediol, Polyglyceryl-2 Stearate, Propanediol, Hydroxyacetophenone, Glyceryl Stearate, Stearyl Alcohol, C12-20 Alkyl Glucoside, Tromethamine, Centella Asiatica Extract (1,510ppm), Carbomer, Melaleuca Alternifolia (Tea Tree) Extract, Hippophae Rhamnoides Fruit Extract, Vitis Vinifera (Grape) Fruit Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Uncaria Sinensis Extract, Glycerin, Adenosine, Disodium EDTA, Oryza Sativa (Rice) Bran Extract, Hydrogenated Phosphatidylcholine, Caprylic/Capric Triglyceride, Sodium Hyaluronate, Glucose, Hydrolyzed Collagen, Sucrose Stearate, Glutathione (10ppm), Cyclodextrin, Cetearyl Alcohol, Caprylyl Glycol, Beta-Glucan, Caprylhydroxamic Acid, Ethylhexylglycerin, Asiatic Acid, Asiaticoside, Madecassic Acid, Madecassoside, Tropolone, Hyaluronic Acid, Potassium Hyaluronate

Changes in antioxidant gene expression and induction of oxidative stress in pea (Pisum sativum l.) under Al stress
Your testosterone has a schedule, and it's running your life more than you realize
published databases are lacking