What Is the Wolverine Stack? BPC-157 + TB-500, the Evidence, and the Risks
It's one of the most talked-about recovery protocols online. Here's what's actually in it, what the research shows, and what athletes need to know first.
Key takeaways
- "Wolverine Stack" is an informal nickname, not a medical protocol. It usually means BPC-157 plus TB-500, sometimes with other compounds added.
- BPC-157's research is almost entirely in animals: 35 of 36 orthopaedic studies in a 2025 review were preclinical [1].
- Thymosin β4 has some human studies in specific formulations, but that doesn't validate every product sold as TB-500 [3][4].
- Neither peptide is FDA-approved, and both are prohibited at all times in tested sport.
- TITAN combines BPC-157, TB-500, NAD+ and GHK-Cu in a needle-free patch. LavION doesn't claim it's equivalent to an injectable stack.
The Wolverine Stack gets its name from the comic-book character known for rapid healing. Online, it's described as the go-to protocol for recovery. The reality is more modest, and more interesting: two very different peptides, a lot of animal research, a little human research, and real questions that haven't been answered yet.
What's in the Wolverine Stack
The term usually refers to BPC-157 and TB-500 taken together, most often by injection. There's no standard dose, schedule or source, and some versions add other compounds. Because it's a nickname rather than a defined protocol, two people "running the Wolverine Stack" may be doing very different things.
What is BPC-157?
BPC-157 (Body Protection Compound 157) is a synthetic 15-amino-acid peptide based on a protein fragment found in gastric juice. It has been studied mostly in animal and laboratory models of tendon, ligament, muscle and gut tissue, and in research on blood-vessel formation.
A 2025 systematic review found 36 studies of BPC-157 in orthopaedic sports medicine. 35 were preclinical, and one involved human patients [1]. Animal findings are useful for forming hypotheses. They aren't proof of what happens in people.
For a full evidence review, see BPC-157: Evidence, Safety and FDA Status.
What is TB-500?
TB-500 is linked to thymosin β4, a naturally occurring 43-amino-acid protein involved in cell migration, blood-vessel formation and wound repair [2]. But the name is used for two different things. In anti-doping research, TB-500 means a short synthetic fragment of thymosin β4, about 889 daltons [5]. Many products use the name for the full-length protein, about 4,963 daltons.
The TB-500 in LavION formulas is full-length thymosin β4, confirmed by mass spectrometry on its certificate of analysis. If you're comparing products, ask which one you're getting.
Thymosin β4 has been studied in people in specific forms: a randomized, placebo-controlled trial of an intravenous formulation in healthy volunteers [3], and a Phase III trial of an eye-drop formulation for a corneal condition [4]. That research doesn't automatically apply to recovery products sold as TB-500.
For more on the name and the research, see TB-500 and Thymosin Beta-4 Explained.
BPC-157 vs TB-500 at a glance
| BPC-157 | TB-500 / thymosin β4 | |
|---|---|---|
| What it is | Synthetic 15-amino-acid peptide | Fragment or full-length thymosin β4 |
| Approx. size | 1,419 Da | ~889 Da (fragment) or ~4,963 Da (full length) |
| Mostly studied for | Tendon, ligament, muscle and gut tissue | Cell migration, wound repair, blood-vessel growth |
| Human evidence | Very limited (1 of 36 orthopaedic studies) [1] | Limited, in specific IV and eye-drop formulations [3][4] |
| FDA status | Not FDA-approved | Not FDA-approved |
| WADA status (2026) | Prohibited at all times (S0) | Prohibited at all times (S2.3) |
Why people stack them
Researchers have studied the two peptides for different parts of tissue repair: BPC-157 for local tissue and blood-vessel pathways, thymosin β4 for cell migration. That's the reasoning behind combining them.
The combination itself hasn't been studied in controlled human trials. When you stack experimental ingredients, the evidence gets more complicated, not less: a study on one ingredient doesn't show what a combination does.
Adding NAD+ and GHK-Cu
Some protocols add two more ingredients. NAD+ is a coenzyme every cell uses for energy metabolism, and its levels tend to fall with age [9]. GHK-Cu is a copper peptide studied mostly for collagen and skin [6].
Adding them broadens what the stack targets, from soft-tissue repair toward energy and collagen. But this four-ingredient combination hasn't been studied in humans either.
FDA status
In 2023, FDA placed BPC-157, TB-500 and several other peptides on its list of bulk substances that may present significant safety risks in compounding. Those nominations were later withdrawn, and as of April 2026 FDA lists these substances in a separate "nominated but withdrawn" table, which still notes potential risks such as immune reactions and peptide impurities [10]. In July 2026, an FDA advisory committee voted in favor of BPC-157, TB-500, KPV and MOTS-c for possible compounding eligibility. Those votes are advisory, and FDA hasn't acted on them [11]. None of these peptides is an FDA-approved drug.
Is the Wolverine Stack safe?
Human safety data for BPC-157 and TB-500 is limited. Injectable protocols add their own risks: contamination, dosing errors when people prepare doses at home, and products sold outside pharmacy channels whose contents may not match the label. Anyone considering a peptide protocol should talk to a clinician first, especially if they're pregnant, nursing, managing a condition or taking medication.
Where TITAN fits
Injectable Wolverine protocols usually mean frequent injections, mixing and refrigeration. TITAN puts BPC-157 (2 mg) and TB-500 (10 mg), plus NAD+ (250 mg) and GHK-Cu (5 mg), in one needle-free iontophoresis patch.
LavION uses the ActivaPatch IontoGo 12.0 iontophoresis device, which applies a low electrical current to help move charged molecules across the skin during a wear period of up to 12 hours. LavION is needle-free and does not use microneedles. Ingredient amounts describe what is loaded into the formula, not measured delivery into the body.
Standard LavION use is one patch every 5 days, worn for up to 12 hours. Those are loaded amounts, not measured delivery, and we don't claim TITAN is equivalent to an injectable stack. A Good Faith Exam with a licensed provider is required before your first purchase.
For a side-by-side comparison, see Wolverine Stack vs TITAN.
References
- 1.Vasireddi N, et al. Emerging use of BPC-157 in orthopaedic sports medicine: a systematic review. HSS Journal. 2025. PubMed
- 2.Goldstein AL, Hannappel E, Sosne G, Kleinman HK. Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opinion on Biological Therapy. 2012;12(1):37-51. PubMed
- 3.Ruff D, et al. A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin β4 in healthy volunteers. Annals of the New York Academy of Sciences. 2010. PubMed
- 4.Sosne G, et al. 0.1% RGN-259 (thymosin β4) ophthalmic solution promotes healing and improves comfort in neurotrophic keratopathy patients in a randomized, placebo-controlled, double-masked phase III clinical trial. International Journal of Molecular Sciences. 2022;24(1):554. PubMed
- 5.Ho EN, et al. Doping control analysis of TB-500, a synthetic version of an active region of thymosin β4, in equine urine and plasma by liquid chromatography-mass spectrometry. Journal of Chromatography A. 2012;1265:57-69. PubMed
- 6.Pickart L, Margolina A. Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data. International Journal of Molecular Sciences. 2018;19(7):1987. PubMed
- 7.World Anti-Doping Agency. World Anti-Doping Code International Standard: Prohibited List 2026 (in force January 1, 2026). wada-ama.org
- 8.U.S. Anti-Doping Agency. BPC-157: experimental peptide prohibited. usada.org
- 9.Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nature Reviews Molecular Cell Biology. 2021;22(2):119-141. PMC
- 10.U.S. Food and Drug Administration. Certain bulk drug substances for use in compounding that may present significant safety risks (page updated April 22, 2026). fda.gov
- 11.U.S. Food and Drug Administration. July 23–24, 2026 Meeting of the Pharmacy Compounding Advisory Committee. fda.gov
Frequently asked questions
What is the Wolverine Stack?
An informal name for using BPC-157 and TB-500 together for recovery and soft-tissue support. It isn't a standardized medical protocol, and doses and sources vary widely.
Is the Wolverine Stack FDA-approved?
No. Neither BPC-157 nor TB-500 is an FDA-approved drug, and the stack isn't an approved treatment.
Is BPC-157 proven in humans?
No. Human evidence is very limited. A 2025 systematic review found that 35 of 36 orthopaedic sports-medicine studies of BPC-157 were preclinical.
What's the difference between BPC-157 and TB-500?
They're different molecules. BPC-157 is a 15-amino-acid synthetic peptide studied mostly for local tissue repair in animals. TB-500 relates to thymosin β4, a protein involved in cell migration, which has some human studies in specific formulations.
Can athletes use the Wolverine Stack?
Not if they're subject to drug testing. BPC-157 and TB-500 are prohibited at all times under the WADA Prohibited List, whatever the route.
Is TITAN the same as the Wolverine Stack?
No. TITAN contains BPC-157 and TB-500 plus NAD+ and GHK-Cu, and it uses iontophoresis instead of injection. LavION doesn't claim TITAN is equivalent to an injectable stack.
Keep reading
This article offers general wellness education and does not replace medical advice. Statements about LavION products have not been evaluated by the FDA, and these products are not intended to diagnose, treat, cure, or prevent disease. Peptide orders include a clinician review before fulfillment. If you are pregnant, nursing, managing a condition, or taking medication, speak with your clinician. See our medical disclaimer.