Evidence B · Good
Chronic (60–90 days)
A unique mechanism — oral tolerance. A small dose (40 mg) signals the immune system to stop attacking the body's own cartilage, reducing immune-mediated degradation.
Dose40 mg/day (single and fixed)
TimingFasted at night (away from a meal)
FoodEmpty stomach (preserves the tertiary structure)
Time to effect60–90 days for the maximum
Notes
- Do not confuse it with hydrolyzed collagen — completely different mechanisms (UC-II is an immune modulator, not a substrate).
- The dose is fixed at 40 mg — more is not better.
- Solid evidence in meta-analysis: a significant reduction in pain (WOMAC −9.24) and improved function.
- Fasted because the heat of the digestive process + gastric acid can denature the tertiary structure of the molecule (which is what makes it work).
Product in use: Needs Vita Collagen Tipo II
Needs Vita Collagen Tipo II is a Brazilian UC-II option, available in pharmacies (Drogaria Raia, Drogasil). 30 capsules, a simple formula with no extra additives.
- Composition: 40 mg of non-hydrolyzed type II collagen per capsule (the standard dose from the RCTs)
- Dosage: 1 capsule/day, fasted at night (away from meals)
- Bottle lasts: 30 days
- Average price: ~R$90 (varies with promotions)
- Cost/day: ~R$3.00
💡 Purchase strategy: Since UC-II needs 60–90 days for the maximum effect, consider buying 3 bottles together to ensure continuity. Pharmacies frequently run a "buy 3, pay for 2" promotion on UC-II.
UC-II vs. Hydrolyzed Collagen
| Characteristic | UC-II | Hydrolyzed Collagen |
|---|---|---|
| Mechanism | Immune (oral tolerance) | Substrate (amino acids) |
| Dose | 40 mg | 10–15 g |
| When to take | Fasted at night | 30–60 min pre-workout |
| Focus | Cartilage (knee) | Tendons/ligaments |