21st Century B12 1000 mcg Prolonged Release Tablets, Cyanocobalamin for Energy and Nerve Support, Gluten Free, 110 Tablets

Key Benefits of Vitamin B12

Vitamin B12 is an essential nutrient that contributes to several normal bodily functions. According to the European Food Safety Authority, B12 contributes to normal energy-yielding metabolism, the normal function of the nervous system, and normal psychological function. It also supports normal red blood cell formation and normal homocysteine metabolism. By ensuring an adequate intake of B12, you can help maintain your daily vitality and cognitive sharpness. This vitamin is particularly important for those following a plant-based diet or who have absorption difficulties.

What Makes This Prolonged Release B12 Unique?

The 21st Century B12 supplement features a prolonged release design, which means that the cyanocobalamin is released gradually over several hours. Unlike immediate-release tablets that deliver a single burst, this sustained delivery helps maintain more consistent B12 levels in your bloodstream throughout the day. This is especially beneficial for busy adults who need steady energy without the mid-day dip. Each small, easy-to-swallow tablet provides 1000 mcg of B12, a dose that many studies indicate is effective for maintaining healthy B12 status. The formula is gluten-free and contains no artificial flavours or preservatives, offering a clean supplement you can rely on.

Who Should Take a Vitamin B12 Supplement?

While many people can benefit from B12 supplementation, certain groups are at greater risk of deficiency. Vegans and vegetarians are particularly susceptible because B12 is naturally found only in animal products. Older adults may have reduced stomach acid, impairing absorption from food. Individuals with pernicious anaemia, gastrointestinal disorders such as Crohn's or coeliac disease, or those who have undergone weight-loss surgery may also struggle to absorb B12. Additionally, people taking medications like metformin or proton pump inhibitors may have lower B12 levels. If you experience persistent fatigue, brain fog, or mood changes, a B12 supplement may help support your body's natural processes.

How to Choose the Best B12 Supplement

When selecting a B12 supplement, consider the form, dosage, and delivery method. Cyanocobalamin, used in this product, is a stable, well-researched form that the body readily converts into active B12. It is an excellent choice for most people. The 1000 mcg dosage is common for daily supplementation, especially for those with absorption concerns. Prolonged release tablets offer convenience — just one tablet per day — and may improve absorption by slowly releg B12 along the digestive tract. Look for products that are third-party tested and free from unnecessary fillers. 21st Century B12 meets these criteria, providing a straightforward, effective solution without added sugars or allergens.

Recommended Dosage and How to Take B12

For adults, take one prolonged release tablet daily, preferably with a meal. Swallow the tablet whole — do not crush or chew, as the prolonged release mechanism relies on the intact tablet. If you have a known deficiency or absorption issues, consult your health care provider for personalised dosing. B12 is water-soluble, so excess is generally excreted in urine. However, very high doses should only be taken under medical supervision. Store the tablets in a cool, dry place to maintain potency.

What Is Vitamin B12 and Why Do You Need It?

Vitamin B12, also known as cobalamin, is an essential water-soluble vitamin that plays a critical role in many bodily functions. It helps convert the food you eat into usable energy, supports the formation of red blood cells, and is vital for maintaining healthy nerve cells. Your body cannot produce B12 on its own, so you must obtain it through diet or supplementation. Unfortunately, B12 deficiency is common, especially amongst older adults, vegetarians, and those with digestive conditions. Symptoms may include fatigue, weakness, memory issues, and tingling in the hands and feet. Ensuring adequate B12 intake is a key step in supporting your overall vitality and cognitive sharpness.

Frequently Asked Questions

Can you take too much B12?

B12 is considered safe even at high doses because it is water-soluble. No tolerable upper intake level has been established. However, always follow the recommended dosage on the label.

Is cyanocobalamin as good as methylcobalamin?

Both are effective. Cyanocobalamin is a synthetic form that is more stable and converts to active forms in the body. Methylcobalamin is already active but less stable. For most people, cyanocobalamin is a reliable and cost-effective choice.

How long does it take to feel results?

Individual experiences vary. Some people notice improved energy within a few weeks, while others may take longer. Consistency is key.

Product Features

• 1000 mcg vitamin B12 (as cyanocobalamin) per tablet
• Prolonged release for all-day support
• Supports energy metabolism and neurological function
• Gluten-free, no artificial flavours or preservatives
• Easy-to-swallow small tablets
• 110 tablets per bottle — over 3 months of daily use

Usage Instructions

Adults take one (1) prolonged release tablet daily with food. Do not crush or chew. As a food supplement, use as part of a balanced diet and healthy lifestyle. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. This product is not intended to diagnose, treat, or prevent any disease.