L-Proline
amino acids
L-Proline is a non-essential amino acid that plays a crucial role in collagen synthesis and connective tissue formation. It is particularly important for maintaining skin elasticity, joint health, and wound healing.
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Benefits
Dosage
Typical Dose
1-5g daily
Upper Limit
10g daily
Timing
With meals or as part of a collagen supplement protocol
Forms & Bioavailability
Free-form powder
High absorption when taken with vitamin C
Collagen peptides
Well-absorbed; provides proline along with other amino acids
Capsules
Moderate; dependent on stomach acid and digestive function
Side Effects
Interactions
Research Summary
L-Proline's role in collagen formation is well-established, with studies demonstrating its importance in maintaining skin elasticity and joint health. Research suggests supplementation may improve skin hydration and reduce joint discomfort, though further human clinical trials are needed to establish optimal dosing protocols.
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The Bottom Line on L-Proline
L-Proline is moderately researched with promising but sometimes mixed evidence.It is most commonly used for collagen synthesis and skin health and joint and cartilage support. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for L-Proline
See how L-Proline can help with specific health goals: