Vitamin B-Complex supplement
Last reviewed June 2026
Who is this for?
This is a Vitamin B-Complex combination containing four important B vitamins — Thiamine (B1), Riboflavin (B2), Pyridoxine (B6), and Niacinamide (B3) — that work together to help your body turn food into energy, support your nerves, and keep your skin, eyes, and blood healthy.
Serves as essential coenzymes for carbohydrate, amino acid, and lipid metabolism by activating key enzymatic pathways (thiamine pyrophosphate for pyruvate dehydrogenase; flavin adenine dinucleotide for oxidative phosphorylation; pyridoxal phosphate for transamination reactions; niacinamide for NAD+/NADH-dependent dehydrogenases), thereby restoring cellular energy production and supporting nervous system function, protein synthesis, and tissue repair in deficiency states.
Available Over The Counter
Get this from any pharmacy or chemist — no prescription needed.
Explore this drug
For tablets or capsules, adults usually take 1 to 2 tablets daily, preferably with food to help your body absorb the vitamins better. For the syrup like Avrobion, follow the dose on the bottle — usually 1 to 2 teaspoonfuls (5-10ml) daily. Injections are given by a healthcare professional, usually when your body needs the vitamins urgently or you cannot swallow.
If you miss a dose, just take it as soon as you remember. If it is almost time for your next dose, skip the missed one and continue as normal. No need to double up — these are vitamins, not antibiotics.
Buy only from reputable pharmacies — avoid buying vitamins from roadside sellers or open markets as they may be expired or fake. Do not take more than the recommended dose thinking it will work faster — excess vitamins can cause problems. If you are on TB medication, tell your doctor so they can adjust your B-Complex dose properly.
Levodopa (used for Parkinson's disease) — Pyridoxine (B6) can reduce its effectiveness. Certain antibiotics like isoniazid (used for TB treatment) can deplete B vitamins, so your doctor may prescribe B-Complex alongside TB drugs. Alcohol reduces your body's ability to absorb B vitamins, so reduce alcohol intake while using this supplement.
Check your specific combination
Is it safe to take Thiamine with your other drugs?
B-Complex vitamins are generally safe during pregnancy and breastfeeding and are often recommended, but always confirm with your doctor or midwife for the right dose.
Store in a cool, dry place away from direct sunlight and heat — Nigerian weather can be very hot, so avoid leaving it on windowsills or inside hot cars. Keep the syrup bottle tightly closed after use. Always keep out of reach of children.
For information only — not medical advice. Always talk to a doctor or pharmacist before changing your medication.
Names this drug is sold under — especially in Nigerian and West African pharmacies
Tap a brand for packaging, NAFDAC details and authenticity check
Counterfeit Drug Warning
Fake drugs are a serious problem in Nigeria. Always buy from a registered pharmacy. If the packaging looks different from what is described above, do not use it.
Dispensing Thiamine Hydrochloride; Riboflavin; Pyridoxine Hydrochloride; Niacinamide?
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