BPC-157 and TB-500 are the two most-researched regenerative peptides in the sports use space. Neither is an AAS. Neither suppresses your HPTA. They work on different tissue repair pathways and stack cleanly together for injuries, connective tissue issues (tendons, ligaments), and general recovery support during or after heavy training cycles.
The protocol
| Week | BPC-157 | TB-500 | Administration |
|---|---|---|---|
| 1 (loading) | 500mcg daily | 5mg × 2 per week (Mon + Thu) | Subcutaneous near injury site (BPC) / anywhere for TB-500 |
| 2–4 (loading) | 250mcg 2× daily | 5mg × 1 per week | Same |
| 5–8 (maintenance) | 250mcg daily | 2mg × 1 per week | Same |
BPC-157
Pentadecapeptide derived from gastric juice. In published animal studies it accelerates healing of tendon, ligament, muscle, and gut tissue. Mechanism involves VEGF upregulation (angiogenesis), nitric oxide pathway modulation, and growth hormone receptor expression at the injury site.
Route matters: BPC-157 administered subcutaneously near the injury site shows better outcomes in research than systemic injection. For an elbow tendonopathy, inject in the subcutaneous tissue near the affected area. For gut healing, any SubQ site works — the peptide reaches the digestive tract through circulation.
Dosing: Research protocols typically use 250-500mcg/day. Higher doses (1000mcg+) have not shown superior outcomes in published work.
TB-500 (Thymosin Beta-4)
Synthetic fragment of thymosin beta-4, a naturally-occurring 43-amino-acid peptide involved in actin regulation and wound healing. Longer half-life than BPC-157 (days, not hours), which is why it’s dosed weekly rather than daily.
Mechanism: Promotes cell migration to injury sites, reduces inflammation, supports angiogenesis. Often used alongside BPC-157 because the two peptides work on partially non-overlapping pathways — BPC for local tissue repair, TB-500 for broader systemic healing coordination.
Dosing: Loading phase 10-20mg/week total, maintenance 2-5mg/week. Can be injected anywhere SubQ — TB-500 distributes systemically regardless of injection site.
Reconstitution
BPC-157 (5mg vial):
- Add 2.5ml bacteriostatic water → 2mg/ml (2000mcg/ml)
- On insulin syringe: 10 units = 0.1ml = 200mcg
- 250mcg dose = 12.5 units (round to 13)
- 500mcg dose = 25 units
TB-500 (2mg or 5mg vial):
- 5mg vial + 5ml bac water = 1mg/ml
- For a 5mg dose: draw full 5ml (inject in two sites if volume uncomfortable)
- For a 2mg dose: draw 2ml
Both peptides stable in the fridge (2-8°C) for 4-6 weeks after reconstitution. Never shake — swirl to mix.
Stacking with AAS cycles
Both peptides stack cleanly with any AAS protocol — no interactions, no HPTA interference. Common use cases:
- During heavy cycles: Joint prophylaxis on deca-free stacks (test+tren, test+var, etc.) where you lose nandrolone’s joint benefit
- Post-injury: Active tendonitis, muscle strain, post-surgical recovery
- Between cycles: Off-cycle maintenance of connective tissue adaptation to heavier lifts
Realistic expectations
- Week 1–2: Subtle — most people feel nothing. The work is happening at cellular level.
- Week 3–4: If you had an active injury, pain starts decreasing. Stiffness reduces.
- Week 5–8: Range of motion improves. Specific injuries often clear or significantly regress. Post-workout recovery feels faster.
These aren’t dramatic-response compounds. They’re “cellular adaptation” tools — you notice the absence of pain or stiffness before you notice any positive sensation.
Safety profile
Research data on both peptides is extensive in animal models, limited in humans. Reported side effects in published human use: rare injection-site soreness, occasional mild fatigue during loading phase. No known AAS-like side effects (no HPTA suppression, no aromatization, no lipid impact, no liver stress).
WADA lists TB-500 as prohibited in competition. BPC-157 is not explicitly listed but is not approved for human therapeutic use either. Relevant if you compete.
Storage
Lyophilized (dry) vials: refrigerated 2-8°C, stable 18+ months. Reconstituted: fridge only, use within 4-6 weeks. Freezing extends shelf life but aliquot first to avoid freeze-thaw degradation.
We ship both peptides with cold packs during warm months. Heat damage is the #1 cause of “my peptides did nothing” reports.