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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.
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| Category | Suplementy | Suplementy |
| Evidence strength | Strong evidence | Strong evidence |
| Evidence Score | 5/5 | 5/5 |
| User rating | 4.7 (189) | 4.8 (612) |
| Typical dose | Deficiency prevention: RDA of about 14–16 mg/day; in dermatology trials on skin-cancer prevention: 500 mg twice daily (1000 mg/day) under medical supervision. Topically: cosmetics with 2–5% niacinamide, applied once or twice daily | 3–5 g per day (maintenance phase); optional loading phase of 20 g/day for 5–7 days |
| Form | Capsules/tablets taken orally; creams and serums with niacinamide applied topically to skin | Creatine monohydrate (the best-studied form) |
| Average price | Doustnie: 15–35 zł za opakowanie starczające na miesiąc. Miejscowo: 20–80 zł za serum/krem z niacynamidem, zależnie od marki i koncentracji | 40–70 zł za 500 g monohydratu (ok. 100 porcji po 5 g) |
| Monthly cost | ok. 15–80 zł/miesiąc, zależnie od formy i produktu | ok. 15–25 zł/miesiąc |
| Time to effects | Topically: sebum reduction can be measurable after just 2–4 weeks of regular use, effects on the barrier and hydration after 4–6 weeks, and visible reduction in discoloration usually after 8–12 weeks. Orally, in the context of skin-cancer prevention: effect was assessed in trials at 3, 6, 9 and 12 months of regular use. | First strength effects after 1–2 weeks; full muscle saturation and maximum effect after about 3–4 weeks of regular use. |
| Who it's for | People with combination or oily skin seeking to regulate excess sebum production | People doing resistance training and high-intensity sports |