21st Century B-12 5000 mcg Sublingual Tablets, 110 Tablets (Pack of 2)

Key Benefits of Vitamin B12

Vitamin B12 supports energy metabolism by helping your body convert carbohydrates into usable energy. It also contributes to normal red blood cell formation, which carries oxygen throughout your body. Many users report improved mental clarity and focus after adding B12 to their routine. Additionally, B12 helps maintain a healthy nervous system by supporting the myelin sheath that protects nerve cells. B12 also plays a role in homocysteine metabolism, which supports cardiovascular health.

What Makes This Vitamin B12 Supplement Special?

21st Century's Vitamin B12 provides 5000 mcg of cyanocobalamin per sublingual tablet—a potent dose designed for fast absorption. The sublingual format allows the vitamin to be absorbed directly into the bloodstream under the tongue, bypassing the digestive system for maximum bioavailability. This is especially beneficial for those with absorption difficulties. The product is non-GM and contains no artificial colours, flavours, or preservatives. It is also unconditionally for purity, freshness, and labelled potency, giving you confidence in every tablet.

How to Choose the Best B12 Supplement

When selecting a B12 supplement, consider the form, dosage, and delivery method. Cyanocobalamin is the most stable and widely studied form, making it a reliable choice for general supplementation. A high-dose like 5000 mcg ensures you meet your daily needs, especially if you have a deficiency. Sublingual tablets offer superior absorption compared to standard pills, particularly for older adults or those with digestive issues. Look for products that are free from unnecessary additives—this 21st Century formula checks all those boxes.

Who Should Take a Vitamin B12 Supplement?

Vitamin B12 deficiency can affect anyone, but certain groups are at higher risk. Vegans and vegetarians often lack dietary B12 since it is naturally found only in animal products. Older adults may have reduced stomach acid, which impairs absorption. Individuals with digestive conditions like Crohn's or coeliac (already correct, but needed to verify) disease, or those who have had weight loss surgery, also face increased risk. Even if you eat meat, stress, medications, and lifestyle factors can deplete B12 levels. This supplement is ideal for anyone looking to maintain healthy B12 status.

Recommended Dosage and How to Take B12

For adults, the recommended daily allowance (RDA) for vitamin B12 is 2.4 mcg per day, but many supplements provide much higher doses to support optimum levels. A typical sublingual dose is one 5000 mcg tablet daily. Place the tablet under your tongue and allow it to dissolve completely—do not swallow whole. This usually takes 30–60 seconds. For best results, take it on an empty stomach. As with any supplement, consult your health care provider before starting, especially if you have a medical condition or take medications.

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 nerve function, red blood cell formation, and DNA synthesis. It helps convert food into energy and maintains the health of your nervous system. Despite its importance, many people don't get enough B12 from diet alone, especially those following plant-based diets or with absorption issues. Supplementing with a high-quality B12 like 21st Century's sublingual tablets ensures your body gets the support it needs.

Frequently Asked Questions

Can you take too much B12?

Vitamin B12 is water-soluble, so excess amounts are typically excreted in urine. High doses up to 5000 mcg are generally considered safe, but it is always wise to follow the recommended dosage and consult a professional if you have concerns.

Why choose sublingual over tablets?

Sublingual absorption bypasses the digestive tract, making it more effective for individuals with absorption issues or who have had gastric surgery. Many users find it convenient and fast-acting.

Product Features

• 5000 mcg of Vitamin B12 (cyanocobalamin) per sublingual tablet
• Supports energy metabolism, nervous system function, and red blood cell formation
• Easy-to-undertake sublingual tablets for rapid absorption
• Non-GM, no artificial colours, flavours, or preservatives
• Unconditionally for purity, freshness, and labelled potency
• Convenient 110-tablet double pack for lasting supply

Usage Instructions

As a dietary supplement, adults take one (1) sublingual tablet daily. Place tablet under tongue until dissolved, then swallow. Do not exceed recommended dosage. Store in a cool, dry place and keep out of reach of children.

Disclaimer: This product is a food supplement and is not intended to diagnose, treat, or prevent any disease.