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 | 5/5 |
| User rating | 4.7 (52) | 4.9 (1042) |
| Typical dose | RDA for adults: approx. 2.4 µg per day; with confirmed deficiency, therapeutic doses are considerably higher — usually 1000 µg per day orally or intramuscular injections following a schedule set by a doctor | 1000–4000 IU/day in healthy adults (target dose depends on baseline 25(OH)D level) |
| Form | Cyanocobalamin or methylcobalamin orally; for deficiency related to absorption disorders — intramuscular injections that bypass the intestinal absorption step | Cholecalciferol (D3), preferably taken with fat or vitamin K2 |
| Average price | 10–30 zł za opakowanie starczające na kilka miesięcy suplementacji profilaktycznej | 15–35 zł za opakowanie kropli/kapsułek na 2–3 miesiące |
| Monthly cost | ok. 3–10 zł/miesiąc przy standardowych dawkach profilaktycznych | ok. 8–15 zł/miesiąc |
| Time to effects | Improvement in blood parameters (e.g. resolution of macrocytosis) is often visible after several to a dozen or so weeks of treatment, and subjective improvement in energy often comes sooner; neurological changes, if already established, may resolve more slowly or only partially, which is why early detection matters so much. | 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 a vegan or vegetarian diet without regular supplementation | Practically the entire population of Poland during autumn and winter |