Calculator
Collagen dose calculator
A daily dose by goal, based on the trials we cite on does collagen actually work. Enter your inputs and read the table. The numbers are starting points, not prescriptions.
Caveats
- · This is a starting-point guide based on published trial doses, not a personalised recommendation.
- · The 2025 American Journal of Medicine meta-analysis of high-quality independent trials did not find a significant skin-aging effect from oral collagen. Industry-funded RCTs (Choi 2019, Bolke 2019) did. We cite both honestly.
- · Vitamin C is the single most important co-factor. Most other added ingredients are upsell.
- · If you have a medical condition, are pregnant, or are on medication, speak with a clinician before starting any supplement.
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