Last updated: June 5, 2026 · Written by the Health Maker Team
Quick answer: The B-complex is a family of eight water-soluble vitamins that work together in energy metabolism — converting the food you eat into usable energy — and in nervous system function. Because they're water-soluble, the body doesn't store most of them well, which is why they're a daily-intake nutrient rather than a stock-up-once nutrient.
The eight B vitamins at a glance
B1 (thiamin) and B2 (riboflavin) help convert carbohydrates and fats into energy. B3 (niacin) supports energy metabolism and normal skin. B5 (pantothenic acid) is involved in making coenzyme A, central to metabolism. B6 (pyridoxine) supports protein metabolism and normal nervous system function. B7 (biotin) is known for hair, skin, and nail support. B9 (folate) supports cell division. B12 (cobalamin) contributes to energy metabolism, nerve function, and red blood cell formation (NIH ODS).
Why they're taken as a complex
The B vitamins participate in overlapping metabolic pathways — several act as coenzymes in the same energy-production chain — so formulas often include a spread rather than a single vitamin. That's why Health Maker's Liquid B12 Drops include B2, B3, B5, and B6 alongside 1200mcg of B12.
Who tends to supplement B vitamins?
B12 occurs naturally in animal foods, so people eating less meat, dairy, or eggs often supplement it. The NIH also notes that absorption of food-bound B12 can decline with age. Anyone with a diagnosed deficiency should work with a healthcare professional — supplements support normal function but are not treatments.
Frequently asked questions
Can you take too much vitamin B12?
B12 has no established upper intake limit — excess is excreted — but always follow label directions and check with a professional if you take medications.
When should I take B vitamins?
Morning with or without food is the common pattern, since they support normal energy metabolism.
Liquid or capsules?
Both work — see our comparison, liquid vs. capsule B12, and browse Energy & Vitality.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. This article is general information, not medical advice.