Resmed Vitamin B6 is a South African supplement containing pyridoxine, the form of vitamin B6 used in supplements. It is taken to correct or prevent a B6 shortfall, and is sometimes suggested for nerve-related symptoms, pregnancy nausea, or alongside medicines that deplete B6. Check your pack for the strength, as B6 is one of the few vitamins that causes harm in excess.
What is Resmed Vitamin B6 (Pyridoxine)?
Resmed is a South African brand whose range includes single-vitamin products. Resmed Vitamin B6 contains pyridoxine, and “vitamin B6” and “pyridoxine” refer to the same nutrient — the bracketed name on the pack is a clarification rather than a second ingredient.
Vitamin B6 is not a single molecule but a group of related compounds. The body converts pyridoxine into pyridoxal 5′-phosphate (P5P), the active form, which acts as a co-factor in well over a hundred enzyme reactions. Its main roles:
- Protein and amino acid metabolism — its largest single role.
- Making neurotransmitters, including serotonin, dopamine and GABA.
- Forming haemoglobin, so red blood cells can carry oxygen.
- Immune function.
- Regulating homocysteine, alongside folate and vitamin B12.
- Releasing stored glucose from the liver.
Strength varies considerably between B6 products, from a few milligrams to 100 mg or more, and this matters more than with most vitamins. Read the label on your own pack rather than assuming.
For general background on the nutrient itself, see the vitamin B6 (pyridoxine) guide. This page covers the branded single-vitamin product and what to check before taking it.
What is Resmed Vitamin B6 (Pyridoxine) commonly used for?
- Correcting or preventing a vitamin B6 deficiency, whether from diet, absorption problems, or medicines that deplete it.
- Alongside isoniazid for tuberculosis. This is the most established use in South Africa. Isoniazid depletes B6 and can cause nerve damage; pyridoxine is routinely prescribed with it to prevent that. Some TB combination products already include it.
- Nausea and vomiting in pregnancy, where B6 has reasonable evidence and is often a first step — but only on the advice of a doctor or midwife.
- Premenstrual symptoms, where it is commonly used, though the evidence is mixed.
- Anaemia of a specific type caused by B6 deficiency.
- Supporting nerve function, in the context of a diagnosed shortfall.
A supplement corrects a shortfall; it does not add benefit beyond that. Vitamin B6 deficiency is uncommon in people eating a varied diet — it is present in meat, fish, poultry, potatoes, bananas, chickpeas and fortified cereals. Taking more B6 than you need does not improve energy, mood or nerve health, and above certain amounts it causes harm.
It is not a treatment for nerve pain in general. That is worth stating plainly, because B6 is often bought for tingling or numbness. Where those symptoms come from a B6 deficiency, replacing it helps. Where they come from something else — diabetes, injury, B12 deficiency — B6 will not help, and taking large amounts can make neuropathy worse.
Who commonly looks for Resmed Vitamin B6 (Pyridoxine) and why
- People taking isoniazid for TB, usually because it was prescribed alongside it.
- Pregnant women experiencing nausea, often after a healthcare professional suggested it.
- People with tingling, numbness or burning in the hands or feet, hoping to address it — a group who should be assessed rather than self-treating.
- People on long-term medicines that affect B6, including certain anti-epileptics and hydralazine.
- People with poor dietary intake, including some older adults, and those with alcohol dependence, where B6 deficiency is more common.
- People with kidney disease or on dialysis, where requirements can be higher.
- People with malabsorption conditions, such as coeliac or inflammatory bowel disease.
- People taking it for premenstrual symptoms.
Others simply want to know what a pack they were given is for.
What to check on the label before taking Resmed Vitamin B6 (Pyridoxine)
- The amount of pyridoxine per tablet. The single most important figure, because the risk here is dose-related.
- The recommended daily amount and how many tablets that means.
- Whether it is a single vitamin or a combination. Check whether any other supplement you take — a B-complex such as Neurobion, or a multivitamin — already contains B6. Doubling up is easy and is how people quietly reach harmful totals.
- Whether it is pyridoxine hydrochloride or P5P, the pre-activated form.
- Any advice on taking it with food.
- Expiry date and storage.
- Excipients, if you have allergies or intolerances.
Adults need only a small amount of vitamin B6 daily — a figure in the low single-digit milligrams. Supplements often contain many times that. Higher amounts are used therapeutically for specific reasons, but that is a decision for a clinician, not a default.
Safety, interactions and when to seek professional advice
Vitamin B6 is the clearest example of a water-soluble vitamin that is not harmless in excess. Most water-soluble vitamins are simply excreted when taken in surplus. B6 is different: sustained high intakes cause peripheral neuropathy — numbness, tingling, burning and unsteadiness, typically starting in the feet and hands.
The cruel part is that these are the very symptoms people often take B6 to treat. Someone with tingling who increases their B6 in response can worsen exactly what they are trying to fix.
This has generally been associated with high doses taken over months, though it has been reported at lower intakes in some people. The nerve damage usually improves after stopping, but recovery can be slow and is not always complete.
Stop and seek medical advice if you develop numbness, tingling, burning, clumsiness, unsteadiness on your feet, or difficulty with fine movements.
Vitamin B6 interacts with several medicines:
- Levodopa for Parkinson’s disease — B6 can reduce its effectiveness when taken without carbidopa. Check with your doctor.
- Phenytoin and phenobarbital for epilepsy — B6 can lower their blood levels and reduce seizure control.
- Isoniazid, hydralazine, penicillamine and cycloserine deplete B6, which is often why it is prescribed alongside them.
- Some antibiotics and oral contraceptives may affect B6 status.
Speak to a doctor or pharmacist before starting if you:
- Take any of the medicines above.
- Are pregnant or breastfeeding. B6 is used in pregnancy nausea, but the amount should be professionally advised.
- Have kidney disease.
- Have existing nerve symptoms, which need a diagnosis first — B12 deficiency, diabetes and thyroid disease all cause similar symptoms and are treated differently.
- Already take a B-complex or multivitamin.
- Are giving it to a child.
Do not exceed the recommended amount, and do not take high doses long term without supervision. More is not better with this particular vitamin.
See a doctor rather than self-treating if you have persistent tingling, numbness or weakness, unexplained fatigue, or symptoms you believe relate to a deficiency. A blood test and a diagnosis are more useful than a guess, and a supplement taken on assumption can delay finding the real cause.
Related supplement guides
Frequently asked questions
What is Resmed Vitamin B6 (Pyridoxine) used for? Correcting or preventing vitamin B6 deficiency, and specific uses such as accompanying isoniazid for TB or, on professional advice, nausea in pregnancy. Pyridoxine is vitamin B6.
Is pyridoxine the same as vitamin B6? Yes. Pyridoxine is the form of vitamin B6 used in most supplements.
Can vitamin B6 help nerve pain? Only where the nerve symptoms are caused by a B6 deficiency. Taking large amounts can itself cause nerve damage, so get the cause diagnosed first.
Why is B6 given with TB treatment? Isoniazid depletes vitamin B6 and can cause nerve damage. Pyridoxine is given alongside it to prevent that.
Can I take too much vitamin B6? Yes — this is the important point. Sustained high intakes cause peripheral neuropathy. Stick to the recommended amount unless a clinician advises otherwise.
Is it safe in pregnancy? B6 is used for pregnancy nausea, but the amount should be advised by a doctor or midwife rather than chosen yourself.
Can I take it with a multivitamin? Check both labels first. Many multivitamins and B-complex products already contain B6, and the totals add up.
How long does it take to work? Where there is a genuine deficiency, improvement takes weeks. If nothing changes, see a doctor rather than increasing the dose.