Why don’t Amazon and DosFarma cost the same?

DosFarma costs 90 % more per capsule than Amazon (€0.200/capsule against €0.105/capsule, medians of both catalogues). That difference does not come out of nowhere. These are the data that explain it, with each store’s figure alongside: capsules per pack (median). Amazon sells bigger packs, and a big pack spreads the same tub, the same label and the same shipping over more capsules. Part of the price gap per capsule is this and not a discount: comparing one store’s small pack with the other’s large one inflates the gap.

Which of the two stores scores better?

Vitamina D3-4000 UI – Alta Concentración – Cura de 6 Meses | Defensas - Inmunidad y Salud Ósea - 365 Comprimidos - Bienestar Diario Para Todo El Año Con Vitaminas y Minerales - Vitavea from Amazon, with 82 out of 100. The score is 35 % price per capsule against the cheapest in the category, 35 % verifiable quality (certification, purity and additives), 20 % the category's own requirements and 10 % the buyers' rating at the store, and it is computed without looking at affiliate links. Prices from October 15, 2026.

Home / Vitamin D / Amazon vs DosFarma

Head to head · data from October 15, 2026

Amazon or DosFarma for vitamin D: which is better value per capsule

The short answer. For vitamin D, Amazon lists 71 products and DosFarma another 15. By price per capsule, Amazon’s median is €0.105/capsule and DosFarma’s is €0.200/capsule. The highest scoring across both catalogues is Vitamina D3-4000 UI – Alta Concentración – Cura de 6 Meses | Defensas - Inmunidad y Salud Ósea - 365 Comprimidos - Bienestar Diario Para Todo El Año Con Vitaminas y Minerales - Vitavea from Amazon, with 82 out of 100 at €0.022/capsule. Neither has products at verification level 4: for vitamin D the ceiling today is a lab report published by the brand itself, and that is not a certification.

Both stores measured on the same criterion: price per capsule and certification verification level. There is no overall winner because there isn’t one: one can win on price and the other on certification, and here you see both separately.

† Some links are affiliate links — they do not change the ranking

Some store links are affiliate links: if you buy through them, this site may earn a commission at no extra cost to you. It changes nothing in the ranking: the score is computed beforehand and without reading those links, and products with no affiliate programme appear exactly the same. How it is calculated.

Both stores at a glance

Amazon

71 vitamin D products

€0.105/capsulemedian

From €0.022/capsule to €0.398/capsule. 0 at verification level 4 and 0 at level 3.

Its best score: Vitamina D3-4000 UI – Alta Concentración – Cura de 6 Meses | Defensas - Inmunidad y Salud Ósea - 365 Comprimidos - Bienestar Diario Para Todo El Año Con Vitaminas y Minerales - Vitavea, 82/100 at €0.022/capsule.

DosFarma

15 vitamin D products

€0.200/capsulemedian

From €0.089/capsule to €0.633/capsule. 0 at verification level 4 and 0 at level 3.

Its best score: A.Vogel Urticalcin Vitamina D 600 Comprimidos, 59/100 at €0.037/capsule.

Amazon against DosFarma, figure by figure

The same numbers for both

Amazon and DosFarma for vitamin D, with prices from October 15, 2026
Figure	Amazon	DosFarma
Products compared	71	15
Median per capsule	€0.105/capsule	€0.200/capsule
Cheapest per capsule	€0.022/capsule	€0.089/capsule
Dearest per capsule	€0.398/capsule	€0.633/capsule
Best score	82	59
Level 4 (certification backed by a third party)	0 of 71	0 of 15
Level 3 (the brand’s own lab report)	0 of 71	0 of 15

The median is not the price you will pay. It is the midpoint of that store’s catalogue in this category, and it tells you whether a store is dear or cheap overall. For buying, the specific row in the table below is what counts.

Why one is cheaper than the other

Factor by factor, with both stores’ data

DosFarma costs 90 % more per capsule than Amazon (€0.200/capsule against €0.105/capsule, medians of both catalogues). That difference does not come out of nowhere. These are the data that explain it, with each store’s figure alongside: capsules per pack (median).

Where the price difference between Amazon and DosFarma for vitamin D comes from
Factor	Amazon	DosFarma
Capsules per pack (median)Amazon sells bigger packs, and a big pack spreads the same tub, the same label and the same shipping over more capsules. Part of the price gap per capsule is this and not a discount: comparing one store’s small pack with the other’s large one inflates the gap.	150 caps.	100 caps.

None of these factors is an accusation. They are medians of what each store publishes on its pages on the day prices were collected: where a page does not declare a figure, that store does not count in that row instead of counting as a zero. A specific product can contradict its store’s median, and that is what the full table is for. How all of this is calculated.

All 86 products from both stores

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Products sorted by score (recommended)
#	Product	Store
01	Vitamina D3-4000 UI · 365 comprimidosBest value	Amazonfree delivery from €35	€8.18	€0.022 /capsule€0.006 /1,000 IU	82
02	Vitamina D3 4000 UI Alto contenido · 400 comprimidos	Amazonfree delivery from €35	€9.99	€0.025 /capsule€0.006 /1,000 IU	78
03	Vitamina D3 4000 UI · 365 comprimidos	Amazonfree delivery from €35	€10.90	€0.030 /capsule€0.007 /1,000 IU	73
04	Nutravita Vitamina D3 4000 UI con 400 Comprimidos Softgel de Alta Dosis	Amazonfree delivery from €35	€14.99	€0.037 /capsule€0.009 /1,000 IU	67
05	Vitamina D3 4000 UI - 400 Comprimidos (Suministro para +1 Año)	Amazonfree delivery from €35	€14.99	€0.037 /capsule€0.009 /1,000 IU	67
06	Vitamina D3 4000UI, 400 Comprimidos, +1 año de Suministro	Amazonfree delivery from €35	€15.15	€0.038 /capsule€0.009 /1,000 IU	67
07	Bandini Bandini® Vitamina D 60.000 UI/mes 200 comprimidos (+6 Meses)	Amazonfree delivery from €35	€6.55	€0.033 /capsule	64
08	Vitamina D3 4000 UI · 365 cápsulas	Amazonfree delivery from €35	€16.97	€0.046 /capsule€0.012 /1,000 IU	63
09	Vitamina D3 2000 UI Alta Potencia · 400 comprimidos	Amazonfree delivery from €35	€9.49	€0.024 /capsule€0.012 /1,000 IU	63
10	Vitamina D3 2000 UI · 365 tabletas	Amazonfree delivery from €35	€8.99	€0.025 /capsule€0.012 /1,000 IU	62
11	Vitamina D3 4000 UI · 500 comprimidos	Amazonfree delivery from €35	€24.97	€0.050 /capsule€0.013 /1,000 IU	62
12	vit4ever Vitamina D3 2000 UI - 365 Comprimidos - 50 µg de Colecalciferol	Amazonfree delivery from €35	€10.18	€0.028 /capsule€0.014 /1,000 IU	61
13	Vitamina D3 [ 4000 UI ] · 365 cápsulas	Amazonfree delivery from €35	€20.79	€0.057 /capsule€0.014 /1,000 IU	60
14	Vitamina D3 2000UI · 400 tabletas	Amazonfree delivery from €35	€11.99	€0.030 /capsule€0.015 /1,000 IU	60
15	Vitamina D3 4000 UI. 300 perlas para 10 meses de tratamiento.	Amazonfree delivery from €35	€17.87	€0.060 /capsule€0.015 /1,000 IU	60
16	Vitamina D3 y K2 MK7 4000 UI · 270 cápsulas	Amazonfree delivery from €35	€16.11	€0.060 /capsule€0.015 /1,000 IU	60
17	Vitamina D · 365 Cápsulas de vitamina D3 K2	Amazonfree delivery from €35	€21.99	€0.060 /capsule€0.015 /1,000 IU	60
18	A.Vogel Urticalcin Vitamina D 600 Comprimidos5.0 (1) · 1/2 requirements	DosFarma+€3.99 delivery	€21.99	€0.037 /capsule	59
19	Vitamina D3 4000 UI de HSN · 120 perlas	Amazonfree delivery from €35	€7.90	€0.066 /capsule€0.017 /1,000 IU	58
20	Vitamina D · 150 Cápsulas de vitamina D3 K2	Amazonfree delivery from €35	€9.98	€0.067 /capsule€0.017 /1,000 IU	58
21	Bandini Bandini® Vitamina D3 K2 365 Comprimidos 30000 UI al mes	Amazonfree delivery from €35	€17.90	€0.049 /capsule	58
22	Bandini Bandini® Vitamina D3 Natural 365 Cápsulas Blandas Suministro de	Amazonfree delivery from €35	€19.90	€0.055 /capsule	57
23	Balasense Vitamina D3 4000 UI 90 Cápsulas Blandas4.0 (6) · 2/2 requirements	DosFarma+€3.99 delivery	€7.99	€0.089 /capsule€0.022 /1,000 IU	57
24	Vitamina D · 365 Cápsulas de vitamina D3 K2	Amazonfree delivery from €35	€21.51	€0.059 /capsule€0.012 /1,000 IU	56
25	Vitamina D3 y K2 2000 UI + 200 µg · 365 comprimidos	Amazonfree delivery from €35	€15.99	€0.044 /capsule€0.022 /1,000 IU	55
26	Vitamina D3 1000 UI · 365 tabletas	Amazonfree delivery from €35	€8.39	€0.023 /capsule€0.023 /1,000 IU	55
27	HSN Vitamina D3 5000 UI · 120 perlas	Amazonfree delivery from €35	€7.90	€0.066 /capsule€0.013 /1,000 IU	55
28	PLAMECA Vitamina D3 4000 UI Defensas · 90 cápsulas	Amazonfree delivery from €35	€8.90	€0.099 /capsule€0.025 /1,000 IU	54
29	Vitamina D3 2000 UI · 365 cápsulas	Amazonfree delivery from €35	€19.75	€0.054 /capsule€0.027 /1,000 IU	54
30	Soria Natural Vitamina D3 Liberación Sostenida 150 Comprimidos · 2/2 requirements	DosFarma+€3.99 delivery	€17.06	€0.114 /capsule	53
31	ESN Vitamina D3, 120 cápsulas	Amazonfree delivery from €35	€9.90	€0.083 /capsule	53
32	Vitamina D3 + K2 4000 UI + 100 µg MK-7 · 150 cápsulas	Amazonfree delivery from €35	€17.97	€0.120 /capsule€0.030 /1,000 IU	53
33	Vitamaze Vitamina D3 20000 UI Depot 180 Comprimidos · 2/2 requirements	DosFarma+€3.99 delivery	€22.99	€0.128 /capsule€0.006 /1,000 IU	53
34	Vitamina D3 y K2 · 240 comprimidos	Amazonfree delivery from €35	€15.19	€0.063 /capsule€0.032 /1,000 IU	53
35	Supradyn Expert Vitamina D3 2000 UI, 365 Comprimidos	Amazonfree delivery from €35	€22.96	€0.063 /capsule€0.032 /1,000 IU	53
36	Vitamina D3 4000UI Drasanvi en 90 Comprimidos Diarios Vegano	Amazonfree delivery from €35	€11.90	€0.132 /capsule€0.033 /1,000 IU	52
37	Healthy Origins Healthy Origins · 360 cápsulas	Amazonfree delivery from €35	€34.74	€0.097 /capsule€0.010 /1,000 IU	52
38	HSN Vitamina D3 Vegana 4000 IU · 120 cápsulas	Amazonfree delivery from €35	€16.90	€0.141 /capsule€0.035 /1,000 IU	52
39	Essentialis Vitamina D3+K2 4000UI y K2 100mcg, 60 comprimidos	Amazonfree delivery from €35	€8.59	€0.143 /capsule€0.036 /1,000 IU	52
40	Vitamina D3 y K2 (5000 UI Vitamina D3 + · 180 comprimidos	Amazonfree delivery from €35	€18.97	€0.105 /capsule€0.021 /1,000 IU	52
41	Lamberts Vitamina D3 4000 UI (100µg) 120 Cápsulas5.0 (2) · 2/2 requirements	DosFarma+€3.99 delivery	€29.88	€0.249 /capsule€0.062 /1,000 IU	52
42	Vitamina D3 y K2 Alta Dosis 5000 UI – 180 Cápsulas	Amazonfree delivery from €35	€19.99	€0.111 /capsule€0.022 /1,000 IU	52
43	Nutravita Vitamina D3 1000 UI · 365 cápsulas	Amazonfree delivery from €35	€14.99	€0.041 /capsule€0.041 /1,000 IU	51
44	MoriVeda Vitamina D3 + K2 MK7 vegana con 7000 UI de D3 y · 90 cápsulas	Amazonfree delivery from €35	€10.49	€0.117 /capsule	51
45	Vitamina D3 4000 UI & K2 200mcg MK-7, 120 Cápsulas - Wellium	Amazonfree delivery from €35	€19.90	€0.166 /capsule€0.042 /1,000 IU	51
46	Vitaldiet Vitamina D3 2000 IU 120 cápsulas · 2/2 requirements	DosFarma+€3.99 delivery	€16.99	€0.142 /capsule€0.071 /1,000 IU	51
47	Vitamina D3 y K2 Alta Dosis 5000 UI – 120 Cápsulas Veganas	Amazonfree delivery from €35	€14.99	€0.125 /capsule€0.025 /1,000 IU	51
48	vit4ever Vitamina D3 10.000 UI + Vitamina K2 200 µg · 180 comprimidos	Amazonfree delivery from €35	€22.99	€0.128 /capsule€0.013 /1,000 IU	51
49	INME VITAMINA D3 4000 UI 120 CAPSULAS	Amazonfree delivery from €35	€21.90	€0.182 /capsule€0.046 /1,000 IU	51
50	Bamboo Labs Vitamina D3 y K2 + Vitamina C · 120 cápsulas	Amazonfree delivery from €35	€21.95	€0.183 /capsule€0.046 /1,000 IU	51
51	Now Foods VITAMIN D3 5000 IU · 120 cápsulas	Amazonfree delivery from €35	€16.10	€0.134 /capsule€0.027 /1,000 IU	51
52	Vitamina D3 y K2. Vitamina D3 5000 ui + Vitamina K2 MK7 200 μg	Amazonfree delivery from €35	€20.95	€0.140 /capsule€0.028 /1,000 IU	51
53	Nutricost Vitamina K2 (MK7) (100 mcg) + Vitamina D3 (5000 UI) 120	Amazonfree delivery from €35	€16.95	€0.141 /capsule€0.028 /1,000 IU	51
54	Vitamina D3 + K2 en dosis altas · 200 comprimidos	Amazonfree delivery from €35	€19.99	€0.100 /capsule€0.050 /1,000 IU	50
55	Solgar Vitamina D3 (Colecalciferol) 15 µg · 60 cápsulas	Amazonfree delivery from €35	€8.51	€0.142 /capsule	50
56	Nature's Bounty Vitamina D3 25mcg 1000 Ui 100 Comprimidos · 2/2 requirements	DosFarma+€3.99 delivery	€9.99	€0.100 /capsule€0.100 /1,000 IU	50
57	Vitamina D3 2000 UI + K2 MK-7 150 µg · 200 cápsulas	Amazonfree delivery from €35	€20.97	€0.105 /capsule€0.052 /1,000 IU	50
58	YNSADIET Vitamina D3, Vitamina K2 - Silicio Orgánico - 90 Cápsulas	Amazonfree delivery from €35	€14.00	€0.156 /capsule	50
59	Vitamina D3 y K2 con Aceite de Oliva Virgen · 180 cápsulas	Amazonfree delivery from €35	€20.79	€0.115 /capsule€0.058 /1,000 IU	50
60	Life Pro Vitamina D3 + K2 MK7 90 Capsulas	Amazonfree delivery from €35	€14.72	€0.164 /capsule	50
61	Lamberts Vitamina D3 4000 UI (100 µg) · 120 cápsulas	Amazonfree delivery from €35	€28.12	€0.234 /capsule€0.059 /1,000 IU	50
62	HSN Vitamina D3 Liposomada Vegetariana (lanolina) · 120 cápsulas	Amazonfree delivery from €35	€14.49	€0.121 /capsule€0.060 /1,000 IU	50
63	EPAPLUS Nutrabits Vitamina D3 + K2 para Huesos y Defensas, 90 Cápsulas	Amazonfree delivery from €35	€15.87	€0.176 /capsule	50
64	Solgar Vitamina D3 4000 UI (100 µg) · 120 cápsulas	Amazonfree delivery from €35	€31.69	€0.264 /capsule€0.066 /1,000 IU	50
65	Solgar Vitamina D3 4000 UI, Aroma Vainilla, 60 Unidades (Paquete de 1)	Amazonfree delivery from €35	€16.19	€0.270 /capsule€0.068 /1,000 IU	49
66	Solaray Vitamina D3 400 UI 120 Perlas5.0 (1) · 2/2 requirements	DosFarma+€3.99 delivery	€10.99	€0.092 /capsule€0.229 /1,000 IU	49
67	fairvital Vitamina D3 + K2 · 90 cápsulas	Amazonfree delivery from €35	€17.95	€0.199 /capsule	49
68	Solgar Vitamina D3 2200 UI 55mcg 50 Cápsulas Vegetales3.0 (1) · 2/2 requirements	DosFarma+€3.99 delivery	€17.99	€0.360 /capsule€0.164 /1,000 IU	49
69	HSN Vitamina D3 Vegana 1000 IU · 120 cápsulas	Amazonfree delivery from €35	€8.90	€0.074 /capsule€0.074 /1,000 IU	49
70	Vitamina D3 4000 UI + K2 MK-7 Liposomada 60 Cápsulas	Amazonfree delivery from €35	€17.90	€0.298 /capsule€0.075 /1,000 IU	49
71	HSN Vitamina D3 + K2 Vegana (2000UI + 100mcg) · 120 cápsulas	Amazonfree delivery from €35	€19.00	€0.158 /capsule€0.079 /1,000 IU	49
72	Nature's Bounty Vitamina D3 1000 UI · 100 comprimidos	Amazonfree delivery from €35	€8.95	€0.089 /capsule€0.089 /1,000 IU	49
73	WeBotanix · Fórmula Vitamina D3 y K2 4000 UI con · 60 cápsulas	Amazonfree delivery from €35	€21.55	€0.359 /capsule€0.090 /1,000 IU	49
74	Solgar Vitamina D3 2200 UI (55 µg) · 50 cápsulas	Amazonfree delivery from €35	€11.11	€0.222 /capsule€0.101 /1,000 IU	48
75	Lamberts Vitamina D3 2000 UI (50 µg) · 120 cápsulas	Amazonfree delivery from €35	€26.71	€0.223 /capsule€0.111 /1,000 IU	48
76	Vitamina D3 y K2 10000UI · 60 uds	Amazonfree delivery from €35	€19.62	€0.327 /capsule€0.033 /1,000 IU	48
77	Vitamina D3 · 2000 UI (50 µg) · 60 cápsulas	Amazonfree delivery from €35	€16.99	€0.283 /capsule€0.142 /1,000 IU	48
78	Lamberts Vitamina D3 1000 UI (25 µg) · 120 cápsulas	Amazonfree delivery from €35	€18.99	€0.158 /capsule€0.158 /1,000 IU	48
79	Tres60 Vitamina D3 + K2 + Magnesio · 60 cápsulas	Amazonfree delivery from €35	€23.90	€0.398 /capsule€0.199 /1,000 IU	48
80	Vitamina D3 y K2 MK7 All-Trans · 120 cápsulas	Amazonfree delivery from €35	€24.99	€0.208 /capsule€0.208 /1,000 IU	47
81	Santiveri Vitamina D3 60 Comprimidos · 1/2 requirements	DosFarma+€3.99 delivery	€11.99	€0.200 /capsule	46
82	Natysal Vitamina D3 30 Cápsulas · 1/2 requirements	DosFarma+€3.99 delivery	€7.99	€0.266 /capsule	46
83	Natysal Colágeno Hidrolizado Con Silicio y Vitamina D3 60 Comprimidos · 1/2 requirements	DosFarma+€3.99 delivery	€16.99	€0.283 /capsule	45
84	Lamberts Omega 3,6,9 1200mg más Vitamina D3 120 Cápsulas5.0 (1) · 1/2 requirements	DosFarma+€3.99 delivery	€39.96	€0.333 /capsule	45
85	Pharma Nord ActiveComplex® Vitamina D 40 mcg. 80 Perlas5.0 (1) · 1/2 requirements	DosFarma+€3.99 delivery	€19.99	€0.250 /capsule€0.156 /1,000 IU	45
86	Casen Recordati Casenbiotic Vitamina D 30 Comprimidos Masticables · 1/2 requirementslowest seen	DosFarma+€3.99 delivery	€18.99	€0.633 /capsule	44

86 products in this table

Questions about Amazon and DosFarma for vitamin D

Answered with the data on this page

Amazon or DosFarma for vitamin D?: On price per capsule, Amazon: its median is €0.105/capsule against €0.200/capsule at DosFarma, which is 90 % dearer. The median does not decide on its own: most of the rest of the mark is certification, and there Amazon has 0 products at level 4 and DosFarma has 0.
Which is the cheapest vitamin D across the two stores?: Vitamina D3-4000 UI – Alta Concentración – Cura de 6 Meses | Defensas - Inmunidad y Salud Ósea - 365 Comprimidos - Bienestar Diario Para Todo El Año Con Vitaminas y Minerales - Vitavea from Amazon, at €0.022/capsule (365 capsules pack for €8.18), at verification level 1 out of 4.
Why don’t Amazon and DosFarma cost the same?: DosFarma costs 90 % more per capsule than Amazon (€0.200/capsule against €0.105/capsule, medians of both catalogues). That difference does not come out of nowhere. These are the data that explain it, with each store’s figure alongside: capsules per pack (median). Amazon sells bigger packs, and a big pack spreads the same tub, the same label and the same shipping over more capsules. Part of the price gap per capsule is this and not a discount: comparing one store’s small pack with the other’s large one inflates the gap.
Which of the two stores scores better?: Vitamina D3-4000 UI – Alta Concentración – Cura de 6 Meses | Defensas - Inmunidad y Salud Ósea - 365 Comprimidos - Bienestar Diario Para Todo El Año Con Vitaminas y Minerales - Vitavea from Amazon, with 82 out of 100. The score is 35 % price per capsule against the cheapest in the category, 35 % verifiable quality (certification, purity and additives), 20 % the category's own requirements and 10 % the buyers' rating at the store, and it is computed without looking at affiliate links. Prices from October 15, 2026.

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