Synvit Vitamin B Complex – 100% RDA of Essential B Vitamins + Folic Acid – UK Made | Energy, Nerve & Cognitive Support. ????Why Choose Synvit B Complex?. Vitamin B3 (16mg), B5 (6mg), B6 (1.4mg), B1 (1.1mg), B2 (1.4mg), B12 (2.5mcg), Folic Acid (200mcg), Biotin (50mcg), Dicalcium Phosphate, Microcrystalline Cellulose, Magnesium Stearate.