How often should I inject TB-500?
Most TB-500 protocols use a twice-weekly loading phase for 4–6 weeks, then a weekly or biweekly maintenance dose. It doesn't need daily injection like BPC-157.
Updated June 1, 2026 · 4 min read
Most TB-500 protocols don't require daily injections. The common pattern is a loading phase of roughly twice-weekly dosing for the first four to six weeks, followed by a maintenance phase of about once weekly (or even biweekly). This is a key difference from BPC-157, which is typically dosed daily. TB-500's longer-acting profile and systemic mechanism mean less frequent injections are the norm.
Why TB-500 isn't a daily peptide
TB-500 is a synthetic fragment of thymosin beta-4, and it works differently than BPC-157. Rather than acting locally at an injection site, it promotes systemic cell migration and tissue remodeling throughout the body. Because of that systemic, longer-lasting action, it doesn't need the frequent topping-up that a short-acting local peptide does.
The practical result: a typical TB-500 schedule front-loads to build up tissue levels, then drops to a maintenance cadence to hold them. The TB-500 loading phase guide covers the reasoning in more depth.
A typical schedule
This is education, not a prescription. Reported protocols generally look like this:
| Phase | Frequency | Duration | Typical weekly total |
|---|---|---|---|
| Loading | ~2x per week | 4–6 weeks | Higher |
| Maintenance | ~1x per week | As needed | Lower |
Many users split the weekly total across two injections during loading rather than taking one large dose, which tends to be better tolerated. The TB-500 dosing protocols page has the specifics.
How it pairs with BPC-157
A lot of people run TB-500 alongside BPC-157 for recovery, and the different injection frequencies are part of why the stack works smoothly:
- BPC-157 — daily, often near the injury site
- TB-500 — twice weekly loading, then weekly
So you're not doing two injections every single day — you're doing daily BPC-157 plus a couple of TB-500 shots per week. The BPC-157 vs TB-500 breakdown explains why the two complement each other. You can inject them in the same session, but keep them in separate syringes unless you've confirmed they co-mix well.
What about injury vs maintenance?
The frequency you choose tends to track your goal:
- Active injury or hard training block: people lean toward the full loading schedule (twice weekly) for longer, since there's more repair demand. Our guide on TB-500 during training blocks covers this use case.
- General maintenance or staying ahead of wear-and-tear: the lighter weekly or biweekly cadence is usually enough once you've completed an initial loading phase.
There's no precise, trial-validated frequency here — TB-500's human evidence is thin, and most schedules come from community practice plus the peptide's known longer-acting profile. So treat the twice-weekly-then-weekly pattern as a sensible default, not a clinical prescription, and adjust based on how you respond rather than chasing a number.
Practical notes
- Subcutaneous is standard. TB-500 is systemic, so unlike BPC-157 you don't need to inject it near a specific injury — anywhere subcutaneous works.
- Don't over-inject thinking more frequent is better. TB-500's longer action means daily dosing mostly wastes peptide without added benefit.
- Use the calculator. Once you know your vial's mg and your target dose, the reconstitution calculator converts it to syringe units so your twice-weekly and weekly doses are consistent.
- Cycle it. Most users don't run TB-500 indefinitely; a defined block followed by time off is the typical approach.
- Consistency beats precision. Whatever cadence you pick, keeping it regular matters more than hitting an exact day. Twice weekly is often run as, say, Monday and Thursday — just pick two spaced-out days and stick to them through the loading phase.
Quick reference
If you want the short version of a standard schedule:
- Weeks 1–6 (loading): inject ~2x per week, splitting your weekly total across the two shots
- After week 6 (maintenance): drop to ~1x per week, or biweekly if you're just maintaining
- Route: subcutaneous, anywhere — no need to target the injury site
- Pair with BPC-157: daily BPC-157 plus your 1–2 weekly TB-500 shots, separate syringes
That pattern covers the vast majority of reported TB-500 use without overcomplicating it.