High Strength Vitamin D3 4000 IU Oral Spray: Superior Absorption & Immunity Support
Max Strength 4000 IU (100µg) D3 | Fast, Effective Absorption via Pioneering Spray Technology
Our max strength Vitamin D3 4000 IU oral spray delivers fast, effective nutrient absorption, supporting your immune system, maintaining healthy bones, and aiding muscle function. This is truly a Better Way to Supplement.
Scientifically formulated and developed in collaboration with Cardiff University, our pioneering spray technology delivers nutrients in an accurate measured dose. The nutrients are quickly absorbed through the buccal membrane (inner cheek) and directly into the bloodstream, where they can get to work straight away, providing clinically proven absorption.

Key Features & Benefits
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- Max Strength Dose: Delivers 4000 IU (100µg) of Vitamin D3 per daily dose (1 spray), providing 2000% of the Nutrient Reference Value.
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- Superior, Fast Absorption: Pioneering spray technology ensures faster absorption directly into the bloodstream, offering a highly effective delivery system compared to tablets.
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- Immune System Support: Vitamin D contributes to the normal function of the immune system, helping your body defend against everyday illnesses and stay resilient year-round.
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- Musculoskeletal Health: Vitamin D is essential for maintaining strong bones and healthy teeth and supports normal muscle function, helping you to stay active every day.
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- Convenient Alternative: A convenient alternative to tablets and capsules with a natural, sugar-free peppermint flavour.
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- Clean Formulation: Free from sugar, colours, flavourings, and bulking agents/fillers.
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- Dietary Friendly: Suitable for adults and vegetarians.
Ingredients and Dosage
Nutrient per Daily Dose (1 spray):
| Nutrient | Amount | Nutrient Reference Value |
| Vitamin D3 | 4000 IU / 100 µg | 2000% |
Ingredients:
Water, diluent (xylitol), cholecalciferol (vitamin D3), emulsifiers (acacia gum and sunflower lecithin), acidity regulator (citric acid), preservative (potassium sorbate), flavouring (natural peppermint oil).
Suitability & Usage
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- How to use: Shake well before every use. 1 spray a day into the mouth daily (ideally onto the inner cheek).
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- Timing: Can be taken at any time of day, with or without food.
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- Storage: Replace cap after use and store at room temperature.
- Stock: In Stock
- Brand: Better You