Pure Encapsulations Vitamin D3 1000 IU is a vegetarian capsule supplement providing 25 micrograms (1,000 IU) of vitamin D3 (cholecalciferol) per capsule, in a pack of 120 capsules.

Key Features

• 25 micrograms (1,000 IU) of vitamin D3 per capsule: a single, clearly stated dose of cholecalciferol, the same form of vitamin D the body produces naturally from sunlight.
• Vegetarian and vegan-suitable capsule: the capsule shell is made from cellulose and water rather than gelatine, so it doesn't rely on animal-derived ingredients.
• Hypoallergenic formula: uses a plant-fibre (cellulose) filler rather than common allergenic bulking agents.
• Flexible dosing: the suggested use is 1 to 5 capsules daily with food, so the dose can be adjusted to individual need, ideally with guidance from a healthcare practitioner, rather than being fixed at one strength.
• 120-capsule pack: at the lowest suggested dose of 1 capsule a day, one bottle lasts around 4 months.

How much vitamin D does one capsule provide?

One capsule provides 25 micrograms (1,000 IU) of vitamin D3. For comparison, the NHS advises most adults consider a daily supplement of 10 micrograms of vitamin D, particularly through autumn and winter, so a single capsule of this product already provides more than that general baseline amount.

Is it safe to take more than one capsule a day?

The label allows 1 to 5 capsules daily, but the manufacturer recommends that anyone taking more than 2 capsules (50 micrograms / 2,000 IU) a day has their blood vitamin D levels monitored. The safe upper limit for vitamin D from all sources, including diet, sunlight and supplements combined, is 100 micrograms (4,000 IU) a day for adults, unless a healthcare professional advises otherwise. Doses above a low, general-purpose amount are best taken under professional guidance rather than decided alone.

Is this vitamin D3 suitable for vegans?

Yes. The capsule shell is made from cellulose and water, with no gelatine or other animal-derived ingredients, and the formula uses a hypoallergenic plant-fibre filler.

Should I take it with food?

Yes, the label directs 1 to 5 capsules daily with food. Vitamin D is fat-soluble, so taking it alongside a meal containing some fat can help the body absorb it.

Other ingredients: hypoallergenic plant-fibre (cellulose); vegetarian capsule shell (cellulose and water).

Take 1 to 5 capsules daily with food, or as directed by a healthcare practitioner. Taking it alongside a meal that contains some fat can help the body absorb this fat-soluble vitamin. Store in a cool, dry place.

If you take more than 2 capsules (50 micrograms / 2,000 IU) a day, it's recommended that you have your blood vitamin D levels monitored. The safe upper limit for vitamin D from all sources combined, including diet, sunlight and supplements, is 100 micrograms (4,000 IU) a day for adults, unless a healthcare professional advises a higher amount. Keep out of reach of children. If you are pregnant or breastfeeding, have any medical condition, or take any medication, consult a healthcare professional before use.

Vitamin D3 is generally well tolerated when taken at recommended doses. Taking excessive amounts over a long period can lead to a build-up of calcium in the blood (hypercalcaemia), which can cause symptoms including nausea, vomiting, reduced appetite, excessive thirst, frequent urination and weakness. This is not a complete list of possible reactions. If you experience a reaction that concerns you, stop taking the product and speak to a pharmacist or doctor.