Solgar Vitamin D3 4000 IU, 120 Vegetable Capsules (£13.26 / £12.48 max S&S) w/voucher

Solgar Vitamin D3 4000 IU (120 vegetable capsules) is down to £15.60 at Amazon. It has typically been selling for around £22.55 over recent months, so this works out at roughly 31% below its usual price.
Its currently ranked 759 in Health & Personal Care on Amazon and rated 4.7 out of 5 from 11,341 customer ratings, so plenty of buyers have already tried it.
Key features:
Vitamin D contributes to the normal absorption and use of calcium
Contributes to the normal function of the immune system and the maintenance of normal muscle function
Each capsule provides 100µg (4000 IU) of vitamin D3
Free from gluten, wheat and dairy, and suitable for vegans
120 capsules, so around four months supply at one a day