Signs of B12 deficiency include: Yellow tinge to skin Dizziness Rapid heartbeat Mouth ulcers Blurred vision Swollen, inflamed tongue (glossitis) Fatigue or weakness Irritability, depression, and other mood changes Pins and needles sensation in hands and feet Memory loss Behavioral changes For mild deficiencies, vitamin supplements and fortified foods can often help restore adequate B12 levels, but sometimes, a vitamin B12 injection is a better option

INGREDIENTS: Water, Dipropylene Glycol, Glycerin, Niacinamide, Octyldodecanol, Helianthus Annuus (Sunflower) Seed Oil, Butylene Glycol, Trehalose, Pentylene Glycol, 1,2-Hexanediol, Eriobotrya Japonica Leaf Extract, Coptis Japonica Root Extract, Mentha Viridis (Spearmint) Extract, Sodium Hyaluronate, Theobroma Cacao (Cocoa) Extract, Centella Asiatica Leaf Extract, Argania Spinosa Kernel Oil, Sesamum Indicum (Sesame) Seed Oil, Chitosan, Serenoa Serrulata Fruit Extract, Caprylyl Methicone, Panthenol, Polymethylsilsesquioxane, Propanediol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Olivate, Polyglyceryl-10 Behenate/Eicosadioate, Ammonium Acryloyldimethyltaurate/VP Copolymer, Sorbitan Olivate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Ethylhexylglycerin, Sorbitan Isostearate, Adenosine, Palmitic Acid, Hydrogenated Lecithin, Glutathione, Phosphatidylcholine, Polyglyceryl-10 Laurate, Dilauryl Thiodipropionate, Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate, Sodium Phytate, Allantoin, Madecassoside, Lecithin, Cellulose, Sodium Phosphate, Polyglutamic Acid, Dextrin, Asiaticoside, Cysteine, Tocopherol, 3-O-Ethyl Ascorbic Acid, Arbutin, Bisabolol, sh-Oligopeptide-1, sh-Oligopeptide-2, sh-Polypeptide-1, sh-Polypeptide-10, sh-Polypeptide-11, sh-Polypeptide-3, sh-Polypeptide-59, sh-Polypeptide-9, Cholesterol, Ascorbic Acid, Beta-Sitosterol, Ascorbyl Glucoside, Ceramide NP, Xanthan Gum, C12-16 Alcohol

Nat Biotechnol 2009;27:5965
Sports Exerc 53 (12), 25772585
In vivo, Ex-4 has been demonstrated to inhibit prostate cancer cell growth by activating GLP-1R, reducing s-phase kinase-associated protein-2 (SKP2) gene expression, subsequently increasing p27Kip1 (p27) protein levels, and inducing tumor cell cycle arrest [67]