You're getting 1,300mg (1.3g) of **Collagen** per serving from a multi-source blend — bovine, chicken sternum, and eggshell membrane covering Types I, II, III, V, and X. That's a wide type range, but the total dose falls well short of the 2.5–10g used in skin studies and the 10–15g used in joint research. At roughly 26% of the minimum clinical dose, you'd need about four servings daily to reach effective territory.

**Vitamin C** at 180mg works as a cofactor for collagen synthesis — your body can't properly cross-link collagen fibers without it. It's dosed below the typical supplement range (250–2,000mg) but enough to support the collagen in this formula. **Biotin** at 2,500mcg is within the common supplement range, though clinical evidence for hair and nail benefits is limited to people with actual deficiency.

The proprietary blend is the main concern here — you don't know how much of the 1,300mg comes from bovine versus eggshell membrane versus chicken sternum, and the total collagen dose is a fraction of what clinical research uses. If skin or joint support is your goal, you'd likely need to supplement additional collagen on top of this.