BPC-157 vs Collagen: what to choose and for whom

A person with pain in the Achilles tendon or knee often faces a choice: the «trendy» peptide BPC-157, talked about on forums, or ordinary collagen. The editorial team has examined typical scenarios and explains what the research shows, how to use collagen rationally and why BPC-157 should not be considered an alternative.

Where the dilemma comes from

Interest in BPC-157 is fuelled by striking results in animals: accelerated healing of transected tendons, ligaments and muscles in rats. On social media these data are often presented as a proven effect in humans, although there are no clinical studies with published results.

Collagen, on the contrary, is perceived as a «boring» supplement, even though it is precisely for collagen that there are randomized human studies in tendinopathy, joint pain and strength-training programmes.

This produces a paradox: a substance with minimal evidence is considered stronger, while a product with proven, if moderate, effects is considered weaker. The reason is the belief that an «injectable peptide» is automatically more effective than food.

To make an informed choice, it is worth examining the specific situations in which people seek help, and looking at what is known for each of them.

Scenarios: tendinopathy, joint pain, injury

Tendinopathy (for example, Achilles or patellar). The basis of treatment is progressive loading - eccentric or isometric exercises. Praet et al. (2019) showed that adding specific collagen peptides to a calf-muscle exercise programme improved function and reduced pain more than exercises with placebo.

Activity-related joint pain. In a 24-week study, Clark et al. (2008), athletes taking collagen hydrolysate reported less pain compared with placebo. The effect is moderate, and it does not replace diagnosis of the causes of the pain.

Acute injury or rupture. Here the decisive factors are examination by a doctor, imaging and, if necessary, surgical treatment. No supplement or peptide can compensate for the wrong approach, and attempts at self-treatment may delay the time to the necessary intervention.

Loss of muscle mass in old age. Zdzieblik et al. (2015) showed that collagen peptides combined with strength training improved body composition and strength in elderly men with sarcopenia compared with placebo.

How to use collagen according to the research

Since collagen is a dietary supplement, one can speak of practical parameters. Studies most often used from 5 to 15 g of collagen peptides or gelatin per day.

The protocol of Shaw et al. (2017) involved taking 15 g of gelatin together with 50 mg of vitamin C about an hour before a short jumping session. The logic is to make the peak of amino acids in the blood coincide with the period when a loaded tendon is actively synthesizing collagen.

Vitamin C is a cofactor of the enzymes that stabilize collagen fibres, so its addition is justified. Vitamin C deficiency with a normal diet is rare, but a small dose together with collagen does no harm.

The main practical principles:

1. combine intake with rehabilitation or training exercises;
2. take 30-60 minutes before the load;
3. add a source of vitamin C;
4. assess the result after several weeks or months, not days;
5. choose products with independent certification if you are an athlete.

Why BPC-157 is not an alternative

The first reason is the lack of evidence in humans. The review by Gwyer et al. (2019) emphasizes that despite encouraging preclinical results, the efficacy and safety of BPC-157 in humans have not been established.

The second reason is the unknown safety profile. A peptide that stimulates angiogenesis and cell growth could theoretically be undesirable in the presence of hidden tumours. There are no long-term safety studies.

The third reason is product quality. BPC-157 is sold as a «research reagent», without pharmaceutical control. Regulatory authorities, notably the FDA, have drawn attention to the potential safety risks of this substance and the lack of data on it.

The fourth reason is sport. BPC-157 is on the WADA Prohibited List in section S0, so for athletes any use of it can end in disqualification.

Which option is appropriate for whom

For people with tendinopathy, joint pain or in the process of rehabilitation, collagen can be a reasonable addition to an exercise programme agreed with a physiotherapist or doctor.

For elderly people who do strength training, collagen peptides can help as an additional source of protein, although in amino-acid composition collagen is inferior to whey protein for muscle growth.

People with an allergy to fish or other source materials should check the origin of the product, and those who have kidney disease should agree any increase in protein intake with a doctor.

BPC-157 today cannot be recommended for any group of people outside clinical studies. If an injury is not healing, the right step is a repeat consultation with a specialist, not a search for experimental agents.

Editorial conclusions

If choosing between BPC-157 and collagen, the rational choice is collagen combined with properly dosed load. It has confirmation in human studies, a high safety profile and does not violate anti-doping rules.

BPC-157 remains an experimental substance with promising animal data, but without clinical evidence, quality control and with a WADA ban.

The main factor in the recovery of tendons and joints is not a supplement, but competent rehabilitation under the supervision of a specialist.

We also recommend reading our materials «BPC-157 or collagen: what's the difference», on the comparison of TB-500 and BPC-157 data and on collagen for ligaments and joints.

References

1. Staresinic M, Sebecic B, Patrlj L, et al. Gastric pentadecapeptide BPC 157 accelerates healing of transected rat Achilles tendon and in vitro stimulates tendocytes growth. J Orthop Res. 2003;21(6):976–983.
2. Gwyer D, Wragg NM, Wilson SL. Gastric pentadecapeptide body protection compound BPC 157 and its role in accelerating musculoskeletal soft tissue healing. Cell Tissue Res. 2019;377(2):153–159.
3. Shaw G, Lee-Barthel A, Ross ML, Wang B, Baar K. Vitamin C-enriched gelatin supplementation before intermittent activity augments collagen synthesis. Am J Clin Nutr. 2017;105(1):136–143.
4. Clark KL, Sebastianelli W, Flechsenhar KR, et al. 24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Curr Med Res Opin. 2008;24(5):1485–1496.
5. Praet SFE, Purdam CR, Welvaert M, et al. Oral supplementation of specific collagen peptides combined with calf-strengthening exercises enhances function and reduces pain in Achilles tendinopathy patients. Nutrients. 2019;11(1):76.
6. Zdzieblik D, Oesser S, Baumstark MW, Gollhofer A, König D. Collagen peptide supplementation in combination with resistance training improves body composition and increases muscle strength in elderly sarcopenic men: a randomised controlled trial. Br J Nutr. 2015;114(8):1237–1245.
7. Khatri M, Naughton RJ, Clifford T, Harper LD, Corr L. The effects of collagen peptide supplementation on body composition, collagen synthesis, and recovery from joint injury and exercise: a systematic review. Amino Acids. 2021;53(10):1493–1506.
8. World Anti-Doping Agency. The World Anti-Doping Code International Standard: Prohibited List. Montreal: WADA; актуальна редакція.