What 1,000 IU of vitamin D cost, as sent on 15 October 2026

This is the report as it stood when it was emailed to journalists on 15 October 2026, with the prices read on the morning of 14 October 2026. It does not change. The live report is recomputed every morning.

112 single-ingredient vitamin D3 products at 17 UK retailers, from 1p to 76p per 1,000 IU: a 136-fold spread. 60 of them are 400 to 1,000 IU a tablet. “Lasts” is the pack at 1,000 IU a day. Download these rows as a CSV.

#	Product	Retailer	Per serving	Servings	Price	Per 1,000 IU	Lasts
1	WeightWorld High-Strength Vitamin D3 Tablets	WeightWorld	4,000 IU	400	£8.99	1p	4.4 years
2	ZipVit Vitamin D3 4000iu - 365. 1 year supply. / Zip-Lock Eco Bag	ZipVit	4,000 IU	365	£8.49	1p	4 years
3	ZipVit Vitamin D3 4000iu Softgels - 365. 1 year supply. / Zip-Lock Eco Bag	ZipVit	4,000 IU	365	£13.99	1p	4 years
4	Simply Supplements Vitamin D3 Tablets 4,000iu	Simply Supplements	4,000 IU	360	£13.99	1p	3.9 years
5	NOW Foods Vitamin D-3 5,000 IU	Healf	5,000 IU	240	£11.81	1p	3.3 years
6	VitaBright Vitamin D3 4000IU - 425 High Strength Softgels Immune System Bone Muscle Support	VitaBright	4,000 IU	425	£19.99	1p	4.7 years
7	VitaBright Vitamin D3 Tablets	VitaBright	4,000 IU	425	£19.99	1p	4.7 years
8	Myvitamins Vitamin D3 Softgels - Non-Vegan	Myprotein	2,520 IU	360	£11.49	1p	2.5 years
9	NOW Foods Vitamin D-3 5,000 IU	Healf	5,000 IU	120	£7.99	1p	1.6 years
10	4 HIM & HER Vitamin D3 50ug (2000IU) Cholecalciferol 1 Year's Supply 365 Tablets	Lloyds Pharmacy	2,000 IU	365	£9.76	1p	2 years
11	Nature's Answer Vitamin D3 Drops	Healf	4,000 IU	250	£13.49	1p	2.7 years
12	ZipVit Vitamin D3 4000iu Softgels	ZipVit	4,000 IU	180	£9.99	1p	2 years
13	Biotics Research Bio-D-Mulsion Forte® - 1 fl oz	Healf	4,000 IU	365	£25.17	2p	4 years
14	NOW Foods Vitamin D-3 2,000 IU	Healf	2,000 IU	120	£4.30	2p	8 months
15	Simply Supplements Vitamin D3 Tablets 2,000iu	Simply Supplements	2,000 IU	180	£6.69	2p	12 months
16	Myvitamins Vitamin D3 Softgels - Non-Vegan	Myprotein	2,520 IU	180	£8.49	2p	1.2 years
17	WeightWorld Vitamin D3 2000IU Tablets	WeightWorld	2,000 IU	400	£14.99	2p	2.2 years
18	Pure Encapsulations Vitamin D3 Liquid	Healf	1,000 IU	750	£14.49	2p	2.1 years
19	NOW Foods Vitamin D-3 2,000 IU	Healf	2,000 IU	240	£9.49	2p	1.3 years
20	Webber Naturals and Holista Extra Strength D3 2500 IU	Healf	2,500 IU	180	£8.99	2p	1.2 years
21	Life Extension Vitamin D3 - 60 sgels	Healf	5,000 IU	60	£6.50	2p	10 months
22	ZipVit Vitamin D3 1000iu - 365. 1 year supply. / Zip-Lock Eco Bag	ZipVit	1,000 IU	365	£7.99	2p	1 year
23	Almus Vitamin D3 25UG 90 Tablet	Lloyds Pharmacy	1,000 IU	90	£2.29	3p	3 months
24	NOW Foods Vitamin D-3 1000 IU	Healf	1,000 IU	360	£9.49	3p	12 months
25	SOLGAR Vitamin D3 2500IU	Healf	2,500 IU	118	£8.49	3p	10 months
26	Webber Naturals and Holista D3 1000 IU	Healf	1,000 IU	500	£14.49	3p	1.4 years
27	Vitabiotics Ultra Vitamin D 4000IU 96 Tablets	Lloyds Pharmacy	4,000 IU	96	£11.49	3p	1.1 years
28	Codeage Vitamin D3 Gummies - 60 ct	Healf	5,000 IU	60	£8.99	3p	10 months
29	Vitabiotics Ultra Vitamin D 4000IU 96 Tablets	Vitabiotics	4,000 IU	96	£11.96	3p	1.1 years
30	Nature's Best Vitamin D3 2000iu - Maximum Strength to Support Bone and Immune Health	Lamberts Healthcare (Nature's Best)	2,000 IU	180	£12.50	3p	12 months
31	Metagenics Vitamin D3 High Strength	Healf	5,000 IU	60	£10.66	4p	10 months
32	Vitabiotics Ultra Vitamin D 3000IU 96 Tablets	Lloyds Pharmacy	3,000 IU	96	£10.34	4p	9 months
33	Healthspan Super Strength Vitamin D3 240 Tablets	Healthspan	1,000 IU	240	£8.99	4p	8 months
34	Bio-Synergy® Vitamin D3 Capsules	Bio-Synergy	5,000 IU	90	£16.99	4p	1.2 years
35	NOW Foods Vitamin D-3 2,000 IU	Healf	2,000 IU	30	£2.36	4p	2 months
36	Nutraconcepts Vitamin D3 1000iu - Bone Muscle & Teeth Calcium Balance	Vitamin Planet	1,000 IU	300	£12.38	4p	10 months
37	Vitabiotics Ultra Vitamin D 3000IU 96 Tablets	Vitabiotics	3,000 IU	96	£11.95	4p	9 months
38	Boots High Strength Vitamin D 25 µg Food Supplement 180 Tablets	Boots	1,000 IU	180	£7.50	4p	6 months
39	Natures Aid Vitamin D3 5000iu High Strength 60 Tablets	Lloyds Pharmacy	5,000 IU	60	£12.64	4p	10 months
40	WeightWorld Vitamin D3 Gummies	WeightWorld	4,000 IU	120	£20.99	4p	1.3 years
41	Vitabiotics Ultra Vitamin D 2000IU 96 Tablets	Lloyds Pharmacy	2,000 IU	96	£8.49	4p	6 months
42	Boots High Strength Vitamin D 25 µg Food Supplement 90 Tablets	Boots	1,000 IU	90	£4.00	4p	3 months
43	Boots Extra Strength Vitamin D 75 µg Food Supplement 90 Tablets	Boots	3,000 IU	90	£12.00	4p	9 months
44	SOLGAR Vitamin D3 4000IU	Healf	4,000 IU	120	£21.39	4p	1.3 years
45	SOLGAR Vitamin D3 4000IU	Healf	4,000 IU	60	£10.99	5p	8 months
46	Boots everyday Vitamin D 240 Tablets	Boots	400 IU	240	£4.50	5p	3 months
47	Pure Encapsulations Vitamin D3 5000 IU	Healf	5,000 IU	60	£14.49	5p	10 months
48	Vitabiotics Ultra Vitamin D 2000IU 96 Tablets	Vitabiotics	2,000 IU	96	£9.35	5p	6 months
49	Healthspan Elite Vitamin D3 4000iu 120 Capsules	Healthspan	4,000 IU	120	£24.99	5p	1.3 years
50	Healthspan Vitamin D3 50 Plus 180 Capsules	Healthspan	2,000 IU	180	£18.99	5p	12 months
51	Nature's Best Vitamin D3 1000iu - Supports Immune and Bone Health	Lamberts Healthcare (Nature's Best)	1,000 IU	180	£9.95	6p	6 months
52	Boots Vegan Vitamin D3 25μg 90 tablets (3 month supply)	Boots	1,000 IU	90	£5.00	6p	3 months
53	Boots Vitamin D 10 µg Food Supplement, 180 Tablets	Boots	400 IU	180	£4.00	6p	2 months
54	Vitabiotics Ultra Vitamin D 1000IU 96 Tablets	Lloyds Pharmacy	1,000 IU	96	£5.41	6p	3 months
55	Erewhon Vitamin D3 5000IU	Healf	5,000 IU	120	£34.99	6p	1.6 years
56	Puori D3 - Vitamin D 2500IU	Healf	2,500 IU	120	£17.99	6p	10 months
57	Holland & Barrett Vitamin D 1000 I.U 25ug 120 Tablets	Holland & Barrett	1,000 IU	120	£7.35	6p	4 months
58	Higher Nature High Strength Vitamin D3 2000iu	Higher Nature	2,000 IU	120	£14.95	6p	8 months
59	SOLGAR Vitamin D 1000IU	Healf	1,000 IU	250	£15.99	6p	8 months
60	Vitabiotics Ultra Vitamin D 1000IU 96 Tablets	Vitabiotics	1,000 IU	96	£6.15	6p	3 months
61	SOLGAR Vitamin D3 1000IU	Healf	1,000 IU	180	£11.99	7p	6 months
62	Quest Forte D 4000IU	Vitamin Planet	4,000 IU	60	£16.21	7p	8 months
63	Higher Nature High Strength Vitamin D3 2000iu	Higher Nature	2,000 IU	60	£8.95	7p	4 months
64	SOLGAR Vitamin D3 2200IU	Healf	2,200 IU	100	£16.49	7p	7 months
65	NOW Foods Vitamin D-3 400 IU	Healf	400 IU	180	£5.49	8p	2 months
66	Boots Vitamin D 10 µg Food Supplement 90 Tablets	Boots	400 IU	90	£2.75	8p	36 days
67	Momentous Vitamin D3	Healf	5,000 IU	60	£22.99	8p	10 months
68	SOLGAR Vitamin D 1000IU	Healf	1,000 IU	100	£7.99	8p	3 months
69	SOLGAR Vitamin D3 2200IU	Healf	2,200 IU	50	£8.99	8p	4 months
70	Nature's Best Vegan Vitamin D3 1000iu	Lamberts Healthcare (Nature's Best)	1,000 IU	120	£9.95	8p	4 months
71	SOLGAR Vitamin D3 1000IU	Healf	1,000 IU	90	£7.99	9p	3 months
72	Nature's Best Vitamin D3 400iu - To Support Bone and Immune Health	Lamberts Healthcare (Nature's Best)	400 IU	180	£6.50	9p	2 months
73	Cytoplan Vitamin D3 Spray	Healf	1,000 IU	125	£11.99	10p	4 months
74	Myvitamins Vitamin D3 Softgels - Vegan	Myprotein	1,000 IU	30	£2.99	10p	30 days
75	Pure Encapsulations Vitamin D3 Vegan	Healf	2,000 IU	120	£24.49	10p	8 months
76	Natures Aid Vitamin D3 1000iu (25ug) 90 Tablets	Lloyds Pharmacy	1,000 IU	90	£9.19	10p	3 months
77	Vitabiotics Ultra Vitamin D 400IU	Vitabiotics	400 IU	96	£3.95	10p	38 days
78	Healthspan Elite Vitamin D3 1000iu 120 Tablets	Healthspan	1,000 IU	120	£12.99	11p	4 months
79	SOLGAR Vitamin D3 1000IU Chewable Tablets - 100 chewables	Healf	1,000 IU	100	£11.49	11p	3 months
80	Healthspan Vitamin D3 10µg 240 Tablets	Healthspan	400 IU	240	£11.99	12p	3 months
81	Zita West Vitamin D	Healf	1,000 IU	100	£13.00	13p	3 months
82	Higher Nature Vitamin D3	Higher Nature	500 IU	120	£7.95	13p	2 months
83	Natures Aid Vegan Vitamin D3 1000iu (25ug) 60 Tablets	Lloyds Pharmacy	1,000 IU	60	£8.04	13p	2 months
84	Thorne Vitamin D-1,000	Healf	1,000 IU	180	£25.99	14p	6 months
85	Thorne Vitamin D-1,000	Healf	1,000 IU	90	£13.02	14p	3 months
86	WeightWorld Vitamin D3 Gummies for Kids	WeightWorld	1,000 IU	120	£17.49	15p	4 months
87	Momentous Vitamin D3 2000 IU	Healf	2,000 IU	60	£18.49	15p	4 months
88	Biocare Vitamin D3 4000iu	Healf	4,000 IU	30	£18.70	16p	4 months
89	Pure Encapsulations Vitamin D3 1,000 IU	Healf	1,000 IU	120	£19.49	16p	4 months
90	Thorne Vitamin D3	Healf	4,000 IU	30	£20.49	17p	4 months
91	Boots Vitamin D 30 Gummies	Boots	1,000 IU	30	£5.20	17p	30 days
92	Simply Supplements Vitamin D3 1000iu Gummies	Simply Supplements	1,000 IU	60	£10.69	18p	2 months
93	Natures Aid Vitamin D3 400iu (10ug) 90 Tablets	Lloyds Pharmacy	400 IU	90	£6.90	19p	36 days
94	Bioglan Vitamin D3 1000Iu 60 Vitagummies	Lloyds Pharmacy	1,000 IU	60	£12.42	21p	2 months
95	Together Health Vitamin D3	Together Health	1,000 IU	30	£6.99	23p	30 days
96	MaryRuth's Vitamin D3 Gummies - Strawberry	Healf	1,000 IU	60	£13.99	23p	2 months
97	Simply Supplements Vegan Vitamin D3 400iu Tablets	Simply Supplements	400 IU	120	£11.29	24p	48 days
98	MaryRuth's Infant & Toddler Vitamin D3 Drops - Unflavoured - 0.5 oz	Healf	668 IU	90	£14.66	24p	2 months
99	HealthAid Vitamin D 500iu 60 Tablets	Lloyds Pharmacy	500 IU	60	£7.35	25p	30 days
100	Biocare Vitamin D3 1000iu	Healf	1,000 IU	60	£14.89	25p	2 months
101	Vitabiotics Wellbaby Vitamin D Drops	Vitabiotics	400 IU	60	£6.75	28p	24 days
102	Natures Aid Vitamin D3 400iu (10ug) Mini Drops 50ml	Lloyds Pharmacy	400 IU	50	£9.19	46p	20 days
103	Vitabiotics Wellkid Marvel Vitamin D	Vitabiotics	500 IU	50	£11.85	47p	25 days
104	Vitabiotics Wellkid Vitamin D Gummies with Star Wars The Mandalorian	Vitabiotics	500 IU	50	£11.85	47p	25 days
105	Wild Nutrition Food-Grown Vitamin D	Healf	1,000 IU	30	£14.80	49p	30 days
106	BioGaia Protectis Orange Vitamin D3 20 mcg 90 Chewable Tablets	Lloyds Pharmacy	800 IU	90	£35.74	50p	2 months
107	Vitabiotics Wellkid Peppa Pig Vitamin D	Vitabiotics	400 IU	30	£6.95	58p	12 days
108	Wild Nutrition Vitamin D - Refillable Glass Jar - 30 days supply	Wild Nutrition	1,000 IU	30	£18.50	62p	30 days
109	Wild Nutrition Vitamin D - Refill Pouch - 30 days supply	Wild Nutrition	1,000 IU	30	£18.50	62p	30 days
110	Wild Nutrition Food-Grown Vitamin D Gummies	Healf	1,000 IU	30	£20.00	67p	30 days
111	Cytoplan Childrens Vitamin D Drops	Healf	400 IU	60	£16.99	71p	24 days
112	MaryRuth's Kids Vitamin D3 Liquid Drops - Orange - 0.5 oz	Healf	640 IU	30	£14.66	76p	19 days