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A yellow box of 'up4' brand Vitamin D strips with Ampli-D, featuring a simple design with product information.
up4™ Vitamin D strips
up4™ Vitamin D strips

up4™ Vitamin D strips

Contains ampli-D®, a 2.5x faster, more effective form of vitamin D

€15.00

These convenient, melt-in-the-mouth strips require no water and deliver a tangy, flavorful experience. Place one strip on your tongue daily for a faster, more reliable way to maintain optimal vitamin D levels. The smartest way to get your daily dose of vitamin D.

  • 2.5× faster-acting form of vitamin D

  • More bioavailable form of vitamin D – Maximizes vitamin D uptake within the body

  • Scientifically backed – ampli-D® is approved as a novel food by the European Commission
  • Supports immunity, bone, and muscle health

Experience the Full Health Benefits of Vitamin D with ampli-D®

Vitamin D is a fat-soluble vitamin essential for overall health, supporting bone strength, muscle function, and immune defense. While it’s well known for aiding calcium absorption and strengthening bones, emerging scientific research highlights its crucial role in boosting immune function. Vitamin D helps regulate the immune system, enhancing the body’s defense against bacteria and viruses. Recent real-world data suggest that low vitamin D levels may increase the risk of infections, such as the common cold.

Packaging and Storage 

  • Primary Packaging: Individually sealed sachets or blister packs.
  • Storage Conditions: Store at 20-25°C, away from light and moisture.
  • Shelf Life: 24 months under specified storage conditions. 

up4™ and ampli-D® are trademarks of dsm-firmenich group.

Place the strip directly on the tongue and let it dissolve before swallowing. Not for individuals below 11 years old. Keep out of reach of children. 

Do not exceed the recommended dose. Food supplements should not be used as a substitute for a varied diet. A varied, balanced diet and healthy lifestyle are important for the correct functioning of the body. Excessive consumption may produce laxative effects.

Anti-caking agent: mannitol, calcidiol (calcifediol) monohydrate (vitamin D), emulsifier: lectins, gelling agent: pectins, thickener: xanthan Gum, humectant: glycerol, acidity regulator: malic Acid, flavouring, stabilizer: orange Flavor, copovidone

Nutritional content: Per (1) Strip

  • Vitamin D3 25µg
  • Reference intake 500%

More info - Vitamin D

Raise vitamin D levels faster

Traditional vitamin D supplements can take several months to restore optimal levels, creating a need for a more effective, bioavailable, and fast-acting solution. Calcidol, the chemical name for ampli-D®, is a next-generation vitamin D formulation designed for enhanced absorption and rapid results. Calcidol is the active metabolite of vitamin D, meaning it is the active component the body can use to aid cellular functions such as the immune response. Unlike conventional vitamin D, this makes calcidol more bioavailable and metabolically active, ensuring the body absorbs and utilizes it more efficiently. 

In 2024, the European Commission authorized Calcidol (ampli-D®) as a novel food source, confirming its safety and effectiveness. Unlike traditional vitamin D supplements, Calcidol bypasses liver metabolism and is directly absorbed in the gut, ensuring that no vitamin D is wasted and that the body reaches optimal levels more quickly. 

The Global Vitamin D Deficiency Crisis

Recent data reveal that 88% of the world’s population has suboptimal vitamin D levels, with large-scale observational studies showing that approximately 40% of Europeans are deficient. Since 90% of our vitamin D comes from sunlight—and dietary sources are limited—many people struggle to achieve adequate levels naturally.

With vitamin D deficiencies so widespread, supplementation plays an increasingly essential role in immunity, bone strength, and overall well-being. The nutritional solution ampli-D® is setting a new standard in supplementation, ensuring individuals can achieve and maintain optimal vitamin D levels more effectively than ever before.

Upgrade your vitamin D intake with ampli-D®—the smarter, faster way to better health.

Created by experts, tested by athletes

We create sports nutrition products in collaboration with leading scientists and top-tier athletes. Every formula is grounded in advanced research and validated through real-world testing with professionals. Using only premium ingredients in clinically effective amounts, our products are designed to deliver proven results in athletic performance.

Swiss science-backed nutrition

Elite athlete approved

Pure, tested ingredients

Energy, immunity, recovery