Vitamin B12 is often mentioned in conversations about tiredness. It has important nutritional functions, but feeling tired does not automatically mean you need a B12 supplement.
Understanding what this vitamin does, where it comes from and when to seek advice can help you make a more informed decision.
What does vitamin B12 do?
Vitamin B12 helps the body make red blood cells, supports the nervous system and is involved in releasing energy from food. It is one of several nutrients involved in normal body functions.
The recognised health claim is: Vitamin B12 contributes to the reduction of tiredness and fatigue. This describes the role of the vitamin. It is not a guarantee that taking a supplement will resolve tiredness, and it should not be interpreted as an instant energy boost.
Does tiredness mean you are low in B12?
No. Tiredness has many possible causes, so it is not enough on its own to diagnose a deficiency.
Vitamin B12 deficiency can cause extreme tiredness and a lack of energy. Other possible symptoms include pins and needles, a sore tongue, muscle weakness and problems with memory or concentration. Some symptoms can occur without anaemia.
If you think you may have a deficiency, see your GP. Assessment can include your symptoms and blood tests. Persistent or unexplained tiredness deserves appropriate advice rather than relying on a supplement to identify or treat the cause.
Which foods provide vitamin B12?
Sources include meat, fish, milk, cheese, eggs and some fortified breakfast cereals. Check the label on fortified foods, because their nutrient content varies.
The NHS advises that adults aged 19 to 64 need about 1.5 micrograms of vitamin B12 a day. Many people can obtain enough through their diet. People following a vegan diet need particular attention to reliable B12 sources, such as suitable fortified foods or supplements.
A product containing marine collagen is animal-derived and is not suitable for a vegan diet, even if it also contains vitamin B12.
Why might someone become deficient?
A low dietary intake is one possible reason, but it is not the only one. Some medical conditions and medicines can affect B12 absorption. This is why treatment should be based on the cause and advice from a healthcare professional.
An everyday food supplement should not be used as a substitute for prescribed treatment for a diagnosed deficiency.
Vitamin B12 in Nutryx
Nutryx Premium Marine Collagen Powder contains hydrolysed marine collagen peptides, biotin and vitamin B12. These are distinct ingredients: the recognised B12 claim above relates to vitamin B12, not to collagen itself.
Read the serving information and directions on your pouch, and do not exceed the recommended daily amount. Nutryx's allergen information identifies fish (cod) and crustacean shellfish; the product is unsuitable for anyone allergic to either.
You can also explore our guides to biotin for hair and skin and marine collagen peptides.
Food supplements should not replace a varied, balanced diet and healthy lifestyle. This article provides general information and is not a diagnosis or treatment recommendation.
