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A peptide protocol is the structured plan that turns a single compound into a consistent, trackable intervention. Getting the plan right (choosing the right goals, doses, schedule, and cycle length) matters more than the peptide itself. This guide walks through each component so you can build a protocol that is both organized and honest about what the evidence supports.
Important context before you begin: Most research peptides are investigational compounds, not FDA-approved drugs. This article covers the practical mechanics of protocol design for educational purposes. Always work with a qualified healthcare provider before starting any peptide regimen.
Step 1: Define a Specific, Measurable Goal
The first thing a solid peptide protocol needs is a concrete objective. Vague goals like "feel better" make it impossible to evaluate results. Choose one primary outcome and define how you will measure it.
Common goal categories include:
- Recovery and tissue repair: injury healing time, pain scores, range of motion
- Body composition: lean mass, body fat percentage, waist measurement
- Sleep and recovery quality: subjective sleep score, HRV, resting heart rate
- Metabolic health: fasting glucose, insulin sensitivity markers (requires labs)
- Cognitive function: focus ratings, mood scales
Once you have a goal, establish a baseline measurement before your first dose. Without it, you are guessing.
Step 2: Match the Compound to the Goal
Different peptides act on different physiological pathways. Matching the compound to your goal is the second step.
| Goal | Commonly Studied Compounds | Evidence Level |
|---|---|---|
| Soft tissue / joint recovery | BPC-157, TB-500 | Preclinical; limited human data |
| Growth hormone release | CJC-1295, Ipamorelin, GHRP-6 | Early clinical; some approved analogs exist |
| Weight / metabolic | Semaglutide, tirzepatide | Robust human RCTs; FDA-approved for specific indications |
| Skin and collagen | GHK-Cu | Early research; mostly cosmetic use |
| Cognitive / neuroprotective | Semax, Selank | Limited; primarily Eastern European research |
For most of the compounds in the top rows of that table, human evidence is limited to small studies or extrapolated from animal models. Manage expectations accordingly.
Step 3: Calculate Your Dose Accurately
Dosing for most research peptides is measured in micrograms (mcg), not milligrams. The critical step is the reconstitution calculation: how many units on a 100-unit insulin syringe correspond to the dose you want, given how you mixed the vial.
The formula:
Units to draw = (Desired dose in mcg ÷ Total peptide in vial in mcg) × Total BAC water added in mL × 100
Example: You have a 5 mg (5,000 mcg) vial reconstituted with 2 mL of bacteriostatic water. You want 250 mcg per injection.
(250 ÷ 5000) × 2 × 100 = 10 units
Getting this wrong leads to either underdosing (no effect) or overdosing (increased side effect risk). Use the free reconstitution calculator at /calculators to avoid math errors. Enter your vial size, water volume, and target dose and it does the conversion for you.
Step 4: Set Your Dosing Schedule
Frequency and timing depend on the compound's half-life and mechanism of action.
Peptide half-life basics:
- Short-acting peptides (e.g., GHRP-6, Ipamorelin) have half-lives measured in minutes to a couple of hours, which is why they are typically dosed 2-3 times daily in protocols that use them for GH pulse stimulation.
- Longer-acting analogs (e.g., CJC-1295 with DAC) have half-lives of several days and are dosed weekly.
- BPC-157 and TB-500 are often dosed once or twice daily based on common practice, though the precise human pharmacokinetics have limited published data.
Build your schedule around three questions:
- What time of day is optimal for this compound? (Some GH-releasing peptides are often taken before bed or training; others are taken fasted.)
- How many days per week? (Daily, 5 on/2 off, or specific cycle structures)
- What are you doing on injection days that might interfere? (Diet, training, other supplements)
Write the schedule out before you start. Improvised dosing makes interpretation of results impossible.
Step 5: Structure the Cycle
Running a compound indefinitely is neither necessary nor prudent. Most protocols use defined on/off cycles for several reasons: to limit cumulative exposure, to allow assessment, and, for GH-releasing peptides, to avoid potential receptor desensitization.
Common cycle structures:
- 4 weeks on / 4 weeks off: Short assessment cycles; useful for gauging initial response
- 8 weeks on / 4 weeks off: Allows more time to reach and observe steady-state effects
- 12 weeks on / 8-12 weeks off: Longer protocols typical for body composition goals
There is no universal "best" cycle. Err toward shorter cycles with compounds where human data is thin. Keep a log of how you felt in the final week before stopping. This becomes your reference point for future cycles.
Step 6: Build Your Stack Thoughtfully
Stacking means combining two or more peptides in the same protocol. Common pairings have a rationale:
- BPC-157 + TB-500: Both are studied for tissue repair, with potentially complementary mechanisms (BPC-157 more focused on gut and tendon; TB-500 on actin regulation and inflammation).
- GHRH + GHRP (e.g., CJC-1295 + Ipamorelin): Different receptor targets that may produce a synergistic GH pulse compared to either alone.
Rules for safe stacking:
- Never start two new compounds simultaneously. If something goes wrong (side effects, unexpected response) you will not know which compound caused it.
- Keep the stack as small as possible. Two compounds are manageable; three or more compounds dramatically increase complexity and unknown interactions.
- Document each compound separately: dose, frequency, start date. This matters if you ever need to discuss the protocol with a medical provider.
Step 7: Track Everything
A protocol without tracking is anecdote. You need at minimum:
- Baseline measurements taken before dose one
- A daily log with dose, time, injection site, and any subjective notes
- Weekly check-ins on your primary outcome metric
- A final assessment at cycle end, using the same measurements as baseline
A simple weekly log is enough: date, dose, injection site, and one line of subjective notes.
Injection site rotation also matters practically. Repeated injections into the same location can cause localized tissue irritation or lipodystrophy over time. Rotate systematically. See the injection site rotation guide for a structured approach.
Track this with Redose
[Redose (/#download)](/# download) handles the logging side automatically: one-tap dose logging with pre-filled amounts and time, injection site tracking with a body-map picker, vial inventory with a remaining-dose countdown, and PDF export for sharing with your doctor. If you are running a structured protocol, having a timestamped record is worth more than memory.
Common Protocol Mistakes
- Skipping the baseline. You cannot evaluate a compound you never measured before.
- Changing too many variables at once. If you start a new training program, diet phase, and peptide protocol in the same week, you cannot credit any outcome to any cause.
- Ignoring reconstitution math. Use the calculator. Manual errors are common and consequential.
- No defined end point. Run indefinitely and you drift; define the cycle before you start.
Summary
Building a sound peptide protocol comes down to: one clear goal, a matched compound, an accurate dose, a consistent schedule, a defined cycle with an off period, minimal and staged stacking, and thorough tracking. The complexity increases with stacking; keep it manageable.
Every element above should be documented before you begin and revisited at cycle end. That record (what you took, when, and what happened) is the only meaningful data you will walk away with.
This article is educational information, not medical advice. Talk to a qualified healthcare provider before starting any protocol.