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DosFarma or PromoFarma for tryptophan: which is better value per capsule
The short answer. For tryptophan, DosFarma lists 13 products and PromoFarma another 15. By price per capsule, DosFarma’s median is €0.191/capsule and PromoFarma’s is €0.394/capsule. The highest scoring across both catalogues is Vitolamin Triptófano + Melatonina 120 Comprimidos from DosFarma, with 71 out of 100 at €0.067/capsule. Neither has products at verification level 4: for tryptophan 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.
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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
13 tryptophan products
€0.191/capsulemedian
From €0.087/capsule to €0.566/capsule. 0 at verification level 4 and 0 at level 3.
Its best score: Vitolamin Triptófano + Melatonina 120 Comprimidos, 71/100 at €0.067/capsule.
15 tryptophan products
€0.394/capsulemedian
From €0.205/capsule to €0.889/capsule. 0 at verification level 4 and 0 at level 3.
Its best score: GHF Triptófano 5 Htp + B6 + Biotina + Mg 60 caps, 56/100 at €0.132/capsule.
DosFarma against PromoFarma, figure by figure
The same numbers for both
| Figure | DosFarma | PromoFarma |
|---|---|---|
| Products compared | 13 | 15 |
| Median per capsule | €0.191/capsule | €0.394/capsule |
| Cheapest per capsule | €0.087/capsule | €0.205/capsule |
| Dearest per capsule | €0.566/capsule | €0.889/capsule |
| Best score | 71 | 56 |
| Level 4 (certification backed by a third party) | 0 of 13 | 0 of 15 |
| Level 3 (the brand’s own lab report) | 0 of 13 | 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
PromoFarma costs 106 % more per capsule than DosFarma (€0.394/capsule against €0.191/capsule, medians of both catalogues). Going by what both pages declare, there are no differences in composition or pack size that explain it: here the gap is the store’s pricing policy.
| Factor | DosFarma | PromoFarma |
|---|---|---|
| Median rating at the storeBased on 33 reviews at DosFarma and 14 at PromoFarma. These are the store’s own ratings, which is judge and party: they help spot a product that arrives damaged or tastes awful, not decide which formula is better. | 5/5 | 5/5 |
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 28 products from both stores
Filter by store to see only one
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| # | Product | Store | |||
|---|---|---|---|---|---|
| 01 | Vitolamin Triptófano + Melatonina 120 Comprimidos · 1/2 requirements | DosFarma+€3.99 delivery | €7.99 | €0.067 /capsule | 71 |
| 02 | DosFarma+€3.99 delivery | €12.99 | €0.087 /capsule | 69 | |
| 03 | DosFarma+€3.99 delivery | €26.99 | €0.135 /capsule | 61 | |
| 04 | DosFarma+€3.99 delivery | €8.99 | €0.150 /capsule | 59 | |
| 05 | GHF Triptófano 5 Htp + B6 + Biotina + Mg 60 caps · 1/2 requirements | PromoFarma | €7.89 | €0.132 /capsule | 56 |
| 06 | PromoFarma | €15.79 | €0.263 /capsule | 53 | |
| 07 | DosFarma+€3.99 delivery | €10.99 | €0.183 /capsule | 52 | |
| 08 | Health 4U H4U 5-HTP (5-Hidroxitriptófano) 30 Cápsulas · 1/2 requirements | DosFarma+€3.99 delivery | €4.99 | €0.166 /capsule | 52 |
| 09 | Ynsadiet Zentrum Triptófano 60 Comprimidos · 1/2 requirements | DosFarma+€3.99 delivery | €11.44 | €0.191 /capsule | 51 |
| 10 | PromoFarma | €12.29 | €0.205 /capsule | 51 | |
| 11 | Ana Maria Lajusticia Ana María Lajusticia Triptófano + Melatonina + Magnesio y Vit. · 3 flavours5.0★ (12) · 1/2 requirements | DosFarma+€3.99 delivery | €12.99 | €0.216 /capsule | 50 |
| 12 | Ana Maria Lajusticia Triptófano Plus Ashwagandha + Rhodiola + Magnesio 60 Comprimidos5.0★ (5) · 1/2 requirements | DosFarma+€3.99 delivery | €13.99 | €0.233 /capsule | 49 |
| 13 | Enzime Sabinco L-Triptófano 500 mg 45 caps · 2/2 requirements | PromoFarma | €24.15 | €0.537 /capsule | 49 |
| 14 | NS Nutritional System Vitans Triptófano + Neo 30 Comprimidos · 2/2 requirements | DosFarma+€3.99 delivery | €16.99 | €0.566 /capsule | 49 |
| PromoFarma | €10.42 | €0.347 /capsule | 41 | ||
| 15 | VitoBest L-Triptofano 300 60caps · 1/2 requirements | PromoFarma | €17.15 | €0.286 /capsule | 48 |
| 16 | PromoFarma | €11.29 | €0.188 /capsule | 46 | |
| 17 | CFN L-Triptofano 60 caps · 1/2 requirements | PromoFarma | €23.29 | €0.388 /capsule | 46 |
| 18 | NOVADIET Triptófano Vitamina B6 Mg 30 caps · 1/2 requirements | PromoFarma | €11.83 | €0.394 /capsule | 46 |
| 19 | DosFarma+€3.99 delivery | €26.99 | €0.450 /capsule | 45 | |
| 20 | PromoFarma | €36.52 | €0.406 /capsule | 45 | |
| PromoFarma | €27.09 | €0.452 /capsule | 44 | ||
| PromoFarma | €18.83 | €0.628 /capsule | 43 | ||
| 21 | NatureMost Tripnosin 5 Htp 60 caps · 1/2 requirements | PromoFarma | €53.31 | €0.889 /capsule | 43 |
| 22 | PromoFarma | €16.01 | €0.400 /capsule | 41 | |
| PromoFarma | €22.02 | €0.550 /capsule | 39 | ||
| 23 | DosFarma+€3.99 delivery | €11.99 | €0.400 /capsule | 41 | |
| 24 | Plameca Triptófano Forte 30 Comprimidos · 0/2 requirements | DosFarma+€3.99 delivery | €14.16 | €0.472 /capsule | 40 |
No product makes that cut
Out of the 28 in this table, none meets every filter that is currently set at the same time.
28 products in this table
Questions about DosFarma and PromoFarma for tryptophan
Answered with the data on this page
- DosFarma or PromoFarma for tryptophan?
- On price per capsule, DosFarma: its median is €0.191/capsule against €0.394/capsule at PromoFarma, which is 106 % dearer. The median does not decide on its own: most of the rest of the mark is certification, and there DosFarma has 0 products at level 4 and PromoFarma has 0.
- Which is the cheapest tryptophan across the two stores?
- Vitolamin Triptófano + Melatonina 120 Comprimidos from DosFarma, at €0.067/capsule (120 capsules pack for €7.99), at verification level 1 out of 4.
- Why don’t DosFarma and PromoFarma cost the same?
- PromoFarma costs 106 % more per capsule than DosFarma (€0.394/capsule against €0.191/capsule, medians of both catalogues). Going by what both pages declare, there are no differences in composition or pack size that explain it: here the gap is the store’s pricing policy. Based on 33 reviews at DosFarma and 14 at PromoFarma. These are the store’s own ratings, which is judge and party: they help spot a product that arrives damaged or tastes awful, not decide which formula is better.
- Which of the two stores scores better?
- Vitolamin Triptófano + Melatonina 120 Comprimidos from DosFarma, with 71 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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