Tool
Supplement comparison tool
Pick up to 4 knowledge base entries and compare their dosage, price, evidence strength and ratings side by side — you can save or share a link to your selection.
Add to comparison (2/4)
| Category | Suplementy | Suplementy |
| Evidence strength | Strong evidence | Strong evidence |
| Evidence Score | 5/5 | 4/5 |
| User rating | 4.9 (1042) | 4.7 (738) |
| Typical dose | 1000–4000 IU/day in healthy adults (target dose depends on baseline 25(OH)D level) | 200–400 mg of elemental magnesium per day (RDA: approx. 310–420 mg depending on sex and age) |
| Form | Cholecalciferol (D3), preferably taken with fat or vitamin K2 | Magnesium citrate, lactate or glycinate — better bioavailability than the oxide form |
| Average price | 15–35 zł za opakowanie kropli/kapsułek na 2–3 miesiące | 20–45 zł za opakowanie 60 kapsułek (miesiąc stosowania) |
| Monthly cost | ok. 8–15 zł/miesiąc | ok. 20–45 zł/miesiąc |
| Time to effects | 25(OH)D blood levels rise noticeably after 6–8 weeks of regular supplementation; subjective effects (energy, immunity) are sometimes reported earlier, but are harder to measure objectively. | With an actual deficiency, improvements in well-being and sleep can be noticeable after 1–3 weeks; fully replenishing tissue stores takes longer, usually several weeks. |
| Who it's for | Practically the entire population of Poland during autumn and winter | People with a diet low in leafy greens, nuts and whole grains |