What Is Vitamin B and Why Do You Need It?

The Essential Guide to Vitamin B

Vitamin B is not just one vitamin — it is a family of eight essential nutrients known as the B-complex vitamins. Each one has defined roles in the body, described by authorised EU health claims. Here is what each B vitamin is approved to claim, and how to know whether your diet covers them.

The 8 B Vitamins and Their Approved Claims

• B1 (Thiamine) — contributes to normal energy-yielding metabolism and to the normal function of the heart.
• B2 (Riboflavin) — contributes to normal energy-yielding metabolism and to the maintenance of normal red blood cells and normal skin.
• B3 (Niacin) — contributes to normal energy-yielding metabolism and to normal psychological function.
• B5 (Pantothenic Acid) — contributes to normal mental performance.
• B6 (Pyridoxine) — contributes to normal energy-yielding metabolism and to the normal functioning of the nervous system.
• B7 (Biotin) — contributes to the maintenance of normal hair and normal skin.
• B9 (Folate) — contributes to normal blood formation and to normal psychological function.
• B12 (Cobalamin) — contributes to normal energy-yielding metabolism and to the reduction of tiredness and fatigue.

These are the claims the European Food Safety Authority has authorised. Everything beyond them — brain health, vitality, mood — is not covered, and responsible labels do not stretch the wording.

Where B Vitamins Come From

B vitamins are found in whole grains, meat, fish, eggs, dairy, legumes, and leafy greens. B12 is the exception: it occurs naturally almost only in animal foods. If you follow a vegan or vegetarian diet, B12 is the one vitamin to pay close attention to.

Who Might Have a Gap?

Certain eating patterns make it harder to cover all eight B vitamins:

• Vegan and vegetarian diets — B12 in particular.
• Highly processed diets low in whole grains and legumes.
• Restricted eating patterns of any kind.

If you suspect a deficiency — for example, persistent tiredness that does not improve — that is a question for a doctor, not for a supplement shelf. A blood test tells you what a guess cannot.

The Nutri-Leaf Vitamin B Complex

The Vitamin B Complex delivers all eight B vitamins, each at 100% NRV per capsule — B1 1.1 mg, B2 1.4 mg, niacin 16 mg NE, B5 6.0 mg, B6 1.4 mg, folate 200 µg, biotin 50 µg, and B12 2.5 µg as methylcobalamin — in a plant-based HPMC capsule shell. One capsule per day with a meal and a glass of water; do not exceed the recommended daily amount.

Final Thoughts

The B vitamins are essential nutrients with clearly defined roles. A balanced and varied diet is the foundation; a B Complex can help where the diet leaves a real gap. Check your own eating pattern first, then choose a product whose label tells you exactly what is inside.

Explore the full range in the Shop All collection.

Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.