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Supplement comparison tool
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| Category | Suplementy | Suplementy |
| Evidence strength | Moderate evidence | Strong evidence |
| Evidence Score | 3/5 | 5/5 |
| User rating | 4.4 (118) | 4.9 (1042) |
| Typical dose | 8–11 mg daily (recommended daily intake); therapeutic doses for correcting deficiency are set by a doctor | 1000–4000 IU/day in healthy adults (target dose depends on baseline 25(OH)D level) |
| Form | Zinc citrate, gluconate, or picolinate — forms with good bioavailability | Cholecalciferol (D3), preferably taken with fat or vitamin K2 |
| Average price | — | 15–35 zł za opakowanie kropli/kapsułek na 2–3 miesiące |
| Monthly cost | — | ok. 8–15 zł/miesiąc |
| Time to effects | Improved immunity and healing usually within a few weeks of supplementation; normalization of testosterone with deficiency — a few to several weeks. | 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. |
| Who it's for | People on plant-based diets with limited intake of animal products | Practically the entire population of Poland during autumn and winter |