As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure
Product features.
A good fit for A conventional tablet with a 90- or 180-tablet bottle.
- Names the vitamin as cholecalciferol (D3).
- Shows 25µg and 1000 IU together in the exact product title.
- The UK page offers two clearly identified bottle sizes.
This tablet is a separate model from Solgar’s softgels and chewables.
Read the ingredient evidence.
Vitamin D3 — Its nutrient role and prevention or treatment of deficiency are established; many broader wellness and infection claims are not. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
Check the exact version, pack size and seller terms before buying.
The details that matter.
- Vitamin form
- D3 / cholecalciferol
- Declared amount
- 25µg / 1000 IU per tablet
- Format
- Coated tablet
- Checked purchase option
- 1000 IU / 90 tablets
- Confirm tablet rather than softgel or chewable when matching a listing.
- Read the full ingredients and check the vitamin’s source if vegan origin matters to you.
- The checked 90-tablet option could be ordered, but Amazon stated dispatch usually takes 1 to 3 months; check the current delivery estimate.
Cycling & duration.
Ingredient timeframes describe the cited preparation; they do not establish a cycle for every finished formula.
Vitamin D3
- On/off pattern
- UK seasonal use is nutritional guidance, not a tolerance-reset cycle.
- Duration & evidence
- NHS advice is to consider 10 micrograms daily during autumn and winter. People at risk of low vitamin D may need that amount throughout the year.
- When to review
- Review season, sun exposure, risk factors and total intake. Prescribed deficiency treatment has its own clinician-led follow-up.
- Many people can meet needs through sunlight and diet from late March or early April to the end of September, but this does not apply equally to everyone.
- Taking breaks does not make excessive vitamin D safe; high-strength products need their own dose review.
Duration sources: NHS: seasonal and year-round vitamin D advice. Checked 2026-11-06.
Read the guide to supplement cycling, courses and review periods
How we assessed it.
Exact Amazon UK product identity, selected variant, buying option and product photograph checked on 6 November 2026. Manufacturer references are retained for model context; Gram Health has not physically tested this product.
Retailer source: Amazon UK: Solgar Vitamin D3 1000 IU (25µg) Tablets - 1000 IU / 90 tablets · Details checked 2026-11-06.
Solgar UK — Vitamin D3 1000 IU Tablets
These features explain the choice; individual fit, taste and health suitability can differ. Current stock, price and seller terms belong to the specific listing.
Read the context.
Explore the topic and make the product details useful.
A different way to meet the need.
Other picks in this category, with a different format, fit or practical strength.
As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure
Vitamin D3 3000 IU Oral Spray
A good fit for A spray format instead of a tablet or capsule.
A peppermint-flavoured spray with the amount per spray stated in both micrograms and IU, making the format easy to compare.
Read the ingredient evidence.
Vitamin D3 — Its nutrient role and prevention or treatment of deficiency are established; many broader wellness and infection claims are not. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
Vitamin D3 4000 IU - 425 Micro Softgels
A good fit for Comparing a clearly stated high-strength D3 softgel when the appropriate amount has been reviewed.
An oil-based cholecalciferol softgel with 4000 IU, or 100 micrograms, vitamin D3 per capsule. This is a high-strength product, considerably above the NHS routine autumn and winter supplement amount.
Read the ingredient evidence.
Vitamin D3 — Its nutrient role and prevention or treatment of deficiency are established; many broader wellness and infection claims are not. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
Selected from published product specifications and ingredient information. Read the reason and fit for each pick. How we choose products
Explore the full collection