Vitamin D3 1000 IU (25µg) – Immune, Bone & Muscle Support | High Strength | 90 Tablets | Daily Enhanced | From the UK’s No.1 Vitamin D Prescription Brand | Vegetarian, NonGMO | Food Supplement

Overview

We keep Fultium Vitamin D3 1000 IU (25µg) – Immune on our vitamin d shelf alongside 50 others, and rank it on rating, review volume and live price rather than on the brand. The manufacturer puts it this way: Strength daily support 1000 IU (25µg): An elevated dose – ideal for winter months, darker skin tones, or minimal sun exposure. Our daily enhanced Vitamin D3 dose. Vitamin D3 contributes to the normal function of the immune system and supports calcium absorption for healthy bones and teeth – support for active adults and busy routines. That is the maker talking, not us, so read it as a claim rather than a finding. Buyers have it at 4.6 out of 5 from 59 ratings. We work out below what that is worth against everything else on the shelf.

Shelf price range checked 26 Sept 2026, 15:37 BST · details

How it compares on the vitamin d shelf

The typical vitamin d product on our shelf scores 4.7 out of 5, measured across 51 rated products. This one comes in at 4.6. That's inside the bottom quarter of the shelf. It isn't a warning, but better-rated options do sit alongside it at similar money, so you would want a specific reason to pick this one.

Behind that score sit 59 ratings, against a shelf median of 1,800. For this shelf that's thin. A handful of new reviews could shift it noticeably, so read the score as an early signal rather than a verdict.

The shelf runs from £3.50 to £29.99 and the midpoint is about £8.99. On price, this one is in the bottom third. Buying at the cheap end is fine as long as the rating stands up. Here it does not quite, so check what has been cut before assuming the saving is free.

Shelf prices checked 26 Sept 2026, 15:37 BST · details

Worked out from the 51 vitamin d products we track, not from the brand's own claims. How we rank →

Key features, as the manufacturer lists them

Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.

• HIGH-STRENGTH DAILY SUPPORT 1000 IU (25µg): An elevated dose – ideal for winter months, darker skin tones, or minimal sun exposure. Our daily enhanced Vitamin D3 dose.
• IMMUNE, BONE & TEETH SUPPORT: Vitamin D3 contributes to the normal function of the immune system and supports calcium absorption for healthy bones and teeth – support for active adults and busy routines.
• MUSCLE FUNCTION: Contributes to normal muscle function
• PREMIUM UK QUALITY YOU CAN TRUST: From the UK’s No.1 Vitamin D prescription brand*; UK made to GMP & pharmaceutical standards for consistent and trust-worthy quality; non-GMO, vegetarian Vitamin D
• SMALL EASY-TO-SWALLOW TABLETS, PERFECT FOR EVERY DAY: Our Vitamin D contains no artificial ingredients; no salt or sugar; small, easy-to-swallow tablet (9mm diameter) for a simple 1-a-day routine, high quality guaranteed.

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