DoseRoutine

Peptide stacks for muscle growth

Q: Do peptides really build muscle?

GH-releasing peptides (CJC-1295, Ipamorelin, tesamorelin) raise endogenous growth hormone and IGF-1, which supports recovery, lean mass and fat loss. IGF-1 LR3 is anabolic directly. None of these replace progressive overload, protein intake and sleep — they amplify a well-run training block.

Q: Are peptide stacks safe?

Most research peptides are not FDA-approved for muscle-building use and are WADA-banned for competitive athletes. Common side effects include water retention, elevated fasting glucose, injection-site reactions and, with IGF-1 analogs, hypoglycemia. Work with a qualified clinician and get baseline bloodwork (IGF-1, fasting glucose, HbA1c) before starting any stack.

Q: How long should I cycle a peptide stack?

GHRH + GHRP stacks (CJC-1295 + Ipamorelin, tesamorelin + Ipamorelin) are typically run 8–12 weeks on, 4 weeks off. IGF-1 LR3 is cycled tighter — 4 weeks on, 4 weeks off — because receptors downregulate. Recovery peptides like BPC-157 + TB-500 are run 4–6 weeks around an injury or heavy training block.

Q: Can I stack BPC-157 with GH peptides?

Yes — BPC-157 (and TB-500) target soft-tissue repair and are commonly layered on top of a CJC-1295 + Ipamorelin GH stack during heavy training blocks. Mechanisms do not overlap, so there is no known interaction; still monitor injection-site tolerance and rotate sites.

A research-informed breakdown of the peptide stacks lifters actually run — for recovery, GH pulses, lean gains, cutting and midlife recomposition. Every stack lists the components, typical doses, injection frequency and cycle length so you can compare protocols in one place.

Educational only

None of the compounds below are FDA-approved for muscle-building use, and all are WADA-banned for competitive athletes. This page summarizes public research and community protocols — it is not medical advice. Get baseline bloodwork and work with a licensed clinician before starting any stack.

How to pick a stack

Recovering from injury or a heavy block? Start with the Recovery stack (BPC-157 + TB-500). It targets soft-tissue repair without touching the GH axis.

Building lean mass? A CJC-1295 + Ipamorelin GH pulse stack is the default. Add IGF-1 LR3 only once you have training age, clean bloodwork and a clinician in the loop.

Cutting or midlife recomp? Tesamorelin has the strongest clinical data for visceral fat loss; pair it with Ipamorelin and a modest deficit.

No-needle option? MK-677 is oral and raises GH/IGF-1, at the cost of water retention and elevated fasting glucose.

The stacks

Recovery & repair stack

Heal soft tissue between heavy training blocks so you can train harder, more often.

Compound	Typical dose	Frequency
BPC-157	250–500 mcg	daily, SC near site
TB-500	2–5 mg	2× per week (loading), then 2 mg weekly

Cycle: 4–6 weeks on, 4 weeks off.
Notes: Complementary mechanisms — BPC-157 drives local angiogenesis, TB-500 drives systemic cell migration. Popular for tendinopathy and post-heavy-block recovery.

GH pulse stack (lean gains)

Amplify natural growth-hormone pulses for lean mass and better sleep-driven recovery.

Compound	Typical dose	Frequency
CJC-1295 (no DAC)	100 mcg	1–3× daily, SC
Ipamorelin	100–200 mcg	matched to CJC dose, SC

Cycle: 5 days on / 2 days off, 8–12 weeks.
Notes: GHRH + GHRP synergy produces a stronger, cleaner GH pulse than either alone. Dose on an empty stomach; last dose 30–60 min pre-bed to piggyback on the sleep pulse.

Lean mass stack (advanced)

Directly stimulate IGF-1 signaling for hypertrophy in trained lifters.

Compound	Typical dose	Frequency
IGF-1 LR3	20–50 mcg	daily, SC (pre- or post-workout)
CJC-1295 + Ipamorelin	100 mcg + 100 mcg	pre-bed, SC

Cycle: 4 weeks on, 4 weeks off — IGF-1 LR3 downregulates receptors with chronic use.
Notes: Powerful but strict on cycling. Monitor blood glucose — IGF-1 analogs can cause hypoglycemia. Not for beginners; not a substitute for progressive overload and protein intake.

Appetite & recovery stack (oral)

Nightly GH secretagogue for lifters in a lean-bulk who want more appetite, sleep depth and recovery — no injections.

Compound	Typical dose	Frequency
MK-677 (ibutamoren)	10–25 mg	once daily, oral (pre-bed)

Cycle: 8–12 weeks on, 4+ weeks off.
Notes: Not a peptide — an oral ghrelin-receptor agonist. Expect water retention, blunted fasting glucose and increased appetite. Watch fasting insulin if cycling long.

Recomp stack (lean + shred)

Preserve muscle while dropping body fat — for cutting phases or midlife recomposition.

Compound	Typical dose	Frequency
Tesamorelin	1–2 mg	daily, SC (pre-bed)
Ipamorelin	200 mcg	daily, SC (pre-bed)

Cycle: 12 weeks on, 4 weeks off.
Notes: Tesamorelin has the best clinical data of any GHRH analog for visceral fat reduction. Pair with a modest calorie deficit and heavy resistance training to hold muscle.

Safety and bloodwork

Baseline labs before any GH/IGF stack: IGF-1, fasting glucose, HbA1c, prolactin, lipids.
Re-check IGF-1 and fasting glucose at 4–6 weeks; back off dose if IGF-1 climbs above age-adjusted upper reference.
Rotate injection sites — abdomen, flank, thigh — to avoid site fibrosis.
Never combine research peptides with exogenous insulin without clinician supervision.
Log each dose, sleep and body-weight trend in DoseRoutine so you can tell whether the stack is actually working.

Educational only — not medical advice. See our medical disclaimer.

Frequently asked

What is the best peptide stack for muscle growth?: For most lifters, a CJC-1295 (no DAC) + Ipamorelin stack dosed 1–3× daily produces the strongest natural GH pulse without shutting down the axis. Advanced users add IGF-1 LR3 for direct hypertrophy signaling.
Do peptides really build muscle?: GH-releasing peptides raise endogenous GH and IGF-1, supporting recovery and lean mass. IGF-1 LR3 is directly anabolic. None replace progressive overload, protein intake and sleep — they amplify a well-run training block.
Are peptide stacks safe?: Most research peptides are not FDA-approved and are WADA-banned. Common side effects include water retention, elevated fasting glucose, injection-site reactions and, with IGF-1 analogs, hypoglycemia. Get baseline bloodwork and work with a clinician.
How long should I cycle a peptide stack?: GHRH + GHRP stacks: 8–12 weeks on, 4 weeks off. IGF-1 LR3: 4 weeks on, 4 weeks off. BPC-157 + TB-500: 4–6 weeks around an injury or heavy training block.
Can I stack BPC-157 with GH peptides?: Yes — BPC-157 and TB-500 target soft-tissue repair and are commonly layered on top of a CJC-1295 + Ipamorelin GH stack. Mechanisms don't overlap; still rotate injection sites.

Dive into the compound profiles, compare peptides side-by-side, or plan doses with our tools.

BPC-157 vs TB-500 CJC-1295 profile Ipamorelin profile Peptide dosage calculator Check interactions