Vitamin B complex tablets are used to treat Vitamin B deficiency. Learn the b complex tablet benefits and side effects along with the required dosage for adults and kids. Each B vitamin supports specific bodily functions, but together they contribute to energy production, neurological health, and proper cellular function. What are the Uses of Vitamin B Complex Tablets ? Vitamin B Complex offers a range of health benefits by supporting energy production, brain function, and red blood cell formation. B - complex vitamins are supplements that contain all 8 types of B vitamins. They may benefit your health if you have a deficiency, pregnancy, or certain medical conditions, but they can also cause side effects. Find patient medical information for Vitamin B Complex on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings