Both collagen peptides and L-theanine are widely used supplements for health benefits, but they serve different purposes. Collagen peptides support skin, joint, and bone health, while L-theanine promotes relaxation and mental focus.
| Feature | Collagen Peptides | L-Theanine |
|---|---|---|
| Primary Health Benefit | Skin, Joint, Bone Health | Mental Focus and Relaxation |
| Average Cost Per Serving (USD) | $1.50 | $1.20 |
| Effectiveness Without Caffeine | - | - |
| Suitable for Vegans/Vegetarians | Yes, if plant-based brand | Yes |
| Popular Brand Market Share (2026) | 30% | 25% |
| Number of Research Studies Supporting Efficacy | Over 70 | Over 40 |
