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Tesamorelin + Ipamorelin: 1mg/300mcg Blend Dosing (2026)

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Affiliate disclosure: vendor links in this article are affiliate links — The Peptide Catalog may earn a commission if you buy through them, at no additional cost to you.

Ready to buy? Compare the top vendors on our best Tesamorelin + Ipamorelin blend sources page. For standalone options see best tesamorelin vendors or best ipamorelin vendors.

Where These Numbers Come From

Tesamorelin's dosing rationale comes from the HIV lipodystrophy trials (Falutz et al., 2007; Stanley et al., 2014) where 2mg daily SC for 26 weeks produced the 15-18% visceral fat reduction. Ipamorelin dosing at 200-300 mcg comes from Bowers' dose-response work in the 1990s and subsequent phase-I/II trials showing reliable GH pulses at that range.

Trial evidence:

Tesamorelin 2mg SC daily → sustained GH/IGF-1 elevation, 15-18% visceral fat reduction over 6 months (Falutz, NEJM 2007, PMID 17699044)

Ipamorelin 200-300 mcg → peak GH 5-10x baseline within 30 minutes, no cortisol/prolactin bump (Raun, EJE 1998, PMID 9539826)

GHRH + GHRP synergy → 2-3x greater amplitude than either alone (Bowers, JCEM 1991, PMID 2004615)

Community protocols extend this evidence base with cycling patterns that weren't studied in the original trials — the 5-on/2-off rhythm and 8-week cycles are empirical community consensus, not clinically validated.

Tesamorelin + Ipamorelin vs CJC-1295 + Ipamorelin

Both are GHRH + GHRP blends. Core differences:

GHRH half-life

~25 min

~30 min

Strongest human evidence

Visceral fat (FDA-studied)

None specific (community use)

Dosing cadence

Daily PM

Daily AM/PM or 2-3x daily

Off-label fit

Body recomposition, stubborn abdominal fat

Anti-aging, sleep, recovery

Typical blend

10mg / 3mg

5mg / 5mg

Cost per mg

Higher (tesamorelin is pricier)

Lower

For visceral fat specifically, tesamorelin has the strongest case. For general anti-aging, CJC-1295 is the more-used pick. See the CJC-1295 + Ipamorelin dosing guide for the other half of this comparison.

Side Effects & Safety

Typical first-cycle side effects:

Weeks 1-2: mild water retention, vivid dreams, light head/warmth after injection

Weeks 3-4: occasional joint stiffness, improved sleep quality, slight appetite increase overnight

Weeks 5-8: adaptation phase — most side effects fade, body composition changes visible

Clinical discontinuation signals (trial-reported): Clinical participants in tesamorelin studies were discontinued upon experiencing:

Persistent headaches with visual changes (intracranial pressure marker in trial monitoring protocols)

Sustained fasting glucose elevation of ~15 mg/dL above baseline

Unusual peripheral swelling persisting beyond weeks 1-2

Carpal tunnel symptoms unresponsive to dose titration in community-reported protocols

Tesamorelin has been studied at 2mg/day for 6+ months without notable safety signals at therapeutic doses. Ipamorelin's clean profile (no cortisol/prolactin) makes the blend one of the better-tolerated GHRH+GHRP combinations.

mg to Units Conversion

On a standard 100-unit insulin syringe, each "unit" equals 0.01 mL (so 100 units = 1 mL). Because this is a pre-mixed blend, a single draw delivers both peptides together — but at different amounts, since the vial holds 10 mg tesamorelin and 3 mg ipamorelin (a fixed 10:3 ratio).

At the standard reconstitution from the Quick Reference above (10 mg / 3 mg vial + 2 mL BAC water, 5 mg/mL tesamorelin + 1.5 mg/mL ipamorelin), each draw delivers:

10 units

0.1 mL

0.5 mg

150 mcg

20 units

0.2 mL

1 mg

300 mcg

30 units

0.3 mL

1.5 mg

450 mcg

40 units

0.4 mL

2 mg

600 mcg

These conversions reflect the dilution documented in community reconstitution protocols. They report how the math is described, not a recommended dosing schedule.

Core Supplies for This Protocol

The three essentials for running any reconstituted injectable: cold storage, accurate syringes, and metabolic tracking.

Cooluli Classic 4L Mini Fridge

Compact thermoelectric mini-fridge with heat/cool toggle. The most-mentioned dedicated peptide-storage fridge in research community sources — fits ~20 vials and runs quietly.

BD Ultra-Fine 31G 0.3cc 5/16" Insulin Syringes (Box of 90)

0.3cc 31G syringes — each gradation marks 1 unit (vs 2 units on 1cc), making sub-50-unit peptide doses accurate. BD Ultra-Fine is the most widely-cited brand in peptide community sources.

CONTOUR NEXT GEN Glucose Meter All-In-One Kit

Ascensia's CONTOUR NEXT GEN — the most clinically-validated home glucose meter. Includes 20 test strips + lancing device. Tracks the blood-sugar response GLP-1 users care about, especially during dose escalation.

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CONNECTED / MODULES

Post-session references

Selected from shared article topics. Source links are retained where available.

03

Evidence cooldown

Research context and source excerpts for a slower second read.

POTENTIAL BENEFITS

What Are the Benefits of Tesamorelin / Ipamorelin?

By supporting natural growth hormone secretion through dual pathways, this peptide combination may offer several wellness-focused benefits, including: