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Selection within potassium and electrolytes · data from
The best potassium from PromoFarma: 15 products by price per capsule
The short answer. Of the 15 products that pass this filter, the highest scoring is Zenement Citrato de Potasio 180 vcaps from PromoFarma: €0.089/capsule and verification level 1 out of 4. The selection runs from €0.089/capsule to €0.709/capsule, with a median of €0.174/capsule.
The 15 potassium products sold by PromoFarma, scored with the same score as the rest of the site. Its median is €0.174/capsule, the same as the market compared here (€0.174/capsule).
† 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.
The three that stand out
Zenement Citrato de Potasio 180 vcaps
€0.089/capsuleNo third-party seal
€0.089 per capsule: the cheapest of those that meet the category's requirements and are not underdosed.
Score 70 out of 100: the highest mark, with 35 % of the weight on price per capsule.
At PromoFarma · see how its score breaks down
The full selection
15
products compared
from €0.089 to €0.709
per capsule
0
at verified level 4
Filter and sort
| # | Product | Store | |||
|---|---|---|---|---|---|
| 01 | Zenement Citrato de Potasio 180 vcaps · 1/1 requirements | PromoFarma | €15.97 | €0.089 /capsule | 70 |
| 02 | Natural Force Potasio 99 mg 100 caps · 1/1 requirements | PromoFarma | €13.04 | €0.130 /capsule | 62 |
| 03 | SOLARAY Citrato de Potasio 60 caps · 3/3 requirements | PromoFarma | €10.09 | €0.168 /capsule | 61 |
| 04 | PromoFarma | €6.40 | €0.107 /capsule | 60 | |
| 05 | Alfa Herbal Potasio Citrato 60 caps · 3/3 requirements | PromoFarma | €11.96 | €0.199 /capsule | 59 |
| 06 | PromoFarma | €7.75 | €0.129 /capsule | 57 | |
| 07 | Marco Viti Massigen Magnesio y Potasio sin Azúcar 60caps · 1/3 requirements | PromoFarma | €8.46 | €0.141 /capsule | 55 |
| 08 | PromoFarma | €15.53 | €0.173 /capsule | 52 | |
| 09 | COMDIET Potassium 90 caps · 1/3 requirements | PromoFarma | €15.64 | €0.174 /capsule | 52 |
| 10 | Neo Potasio 50 caps · 1/3 requirements | PromoFarma | €11.99 | €0.240 /capsule | 49 |
| 11 | Alfa Herbal Potasio Magnesio 60 caps · 1/3 requirements | PromoFarma | €14.39 | €0.240 /capsule | 49 |
| 12 | Nale Potasio Calcio 60 caps · 1/3 requirements | PromoFarma | €16.24 | €0.271 /capsule | 48 |
| 13 | Tegor Potasio Kelp 40 caps · 1/3 requirements | PromoFarma | €11.89 | €0.297 /capsule | 47 |
| 14 | Waydiet Natural Potasio Oligogranulos 50 caps · 1/3 requirements | PromoFarma | €15.18 | €0.304 /capsule | 47 |
| 15 | MAVEN PHARMA Srl Maven Pharma Iodocare 225 Yoduro de Potasio 30caps · 1/3 requirements | PromoFarma | €21.28 | €0.709 /capsule | 43 |
No product makes that cut
Out of the 15 in this table, none meets every filter that is currently set at the same time.
15 products in this table
What each tub contains
Median dose per serving
Price per kilo does not tell you how much active ingredient is inside the kilo. This table does: for each ingredient, the median dose per serving at each store and how many products reach the dose backed by studies (the same reference this site scores with).
| Ingredient | PromoFarma | All other stores |
|---|---|---|
| PotassiumEvidence-backed dose: from 2 g per serving | not included | 629 mg3 of 19 contain it · 0 reach the dose |
The dose is per serving, not per tub. A big tub with a short dose forces you to take two scoops to get the same, and then it lasts half as long: that is why the price per dose in the next section does not match the price per kilo.
Why one is cheaper than the other
Factor by factor, with both stores’ data
PromoFarma costs 4 % more per capsule than All other stores (€0.174/capsule against €0.167/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: products with declared additives.
| Factor | PromoFarma | All other stores |
|---|---|---|
| Products with declared additivesWhat the pages of both declare: colourings, artificial sweeteners, anti-caking agents. An additive is not fraud, but it takes up grams that are not active ingredient and is cheaper than the active ingredient: where more additive is declared, the price per capsule drops without the product being better. | 0 % | 16 % |
| Median rating at the storeBased on 15 reviews at PromoFarma and 47 at All other stores. 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.
This is a filter, not another ranking. The score that sorts this table is exactly the same as in the full potassium comparison: the only thing removed here is the products that do not meet the criterion above. How it is calculated.
Questions about this potassium selection
Answered with the data on this page
- Which is the best potassium in this selection?
- Zenement Citrato de Potasio 180 vcaps from PromoFarma, with 70 points out of 100 at €0.089/capsule. The 15 potassium products sold by PromoFarma, scored with the same score as the rest of the site. Its median is €0.174/capsule, the same as the market compared here (€0.174/capsule).
- Which is the cheapest per capsule?
- Zenement Citrato de Potasio 180 vcaps from PromoFarma, at €0.089/capsule (180 capsules pack for €15.97). It is at verification level 1 out of 4: price is only 35 % of the mark.
- How was this selection made?
- The 15 potassium products sold by PromoFarma, scored with the same score as the rest of the site. Its median is €0.174/capsule, the same as the market compared here (€0.174/capsule). The order within the table is the usual score: 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. Affiliate links do not enter the calculation. Prices collected on October 15, 2026.
Other ways to look at potassium
Same dataset, another question