Comparison

Tesamorelin + Ipamorelin vs MK-677

GH peptidic pulses versus oral 24-hour IGF-1: targeted VAT loss or set-it-and-forget-it convenience.

Effectiveness Profile

Tesamorelin + Ipamorelin
MK-677

At a Glance

 Tesamorelin + IpamorelinMK-677
TypeGH & IGFGH & IGF
Legal statusResearchResearch
Half-lifeTesamorelin ~26–38 min; Ipamorelin ~2 hours4–6 hours
Preferred routeSubQ (abdominal, rotated)Oral
Dose frequencyonce-dailyonce-daily
Beginner dose1100–1200 mcg10–15 mg
Intermediate dose2200–2300 mcg20–25 mg
Advanced dose2300–2900 mcg25–50 mg
Cycle length12–26 wks8–24 wks
Bioavailability4%60%
Time to peak0.25h1.5h
Active duration3h24h
StorageLyophilized: 2–8°C refrigerated. Reconstituted tesamorelin: use within 24–48 h refrigerated. Reconstituted ipamorelin: ~4 weeks refrigerated.Room temperature, dry; capsules stable long-term. Liquid solutions best refrigerated.
PCT requiredNoNo
Ancillaries requiredNoNo
Safe for womenYesYes

Verdict

Tesamorelin + Ipamorelin wins for:

  • Targeted visceral fat loss (VAT) with sparing of subcutaneous fat
  • Pulsatile, physiologic GH/IGF-1 patterns (closer mimicry of natural secretion)
  • Cleaner side-effect profile (less fluid retention, minimal appetite surge, lower glucose impact)
  • Customizable protocol (timing, dosing, synergy with other injectables)

MK-677 wins for:

  • Convenience and compliance (oral dosing, no injections or mixing lyophilized powder)
  • Large, sustained (24-hour) elevations in GH and IGF-1 with a single daily dose
  • Easy stacking with virtually any protocol—especially for recovery and sleep enhancement
  • Affordable, widely available, and stable for long shelf lives

Pick A or B?

Pick Tesamorelin + Ipamorelin if:

  • The goal is reduction in visceral (abdominal) fat with retention of subq fat for a tighter midsection
  • Protocol flexibility and precise dial-in of GH pulse timing is desired (e.g., pre-bed fasted, peri-GLP-1)
  • There is sensitivity to MK-677's water retention, appetite stimulation, or insulin resistance
  • Research aim is maximizing endogenous GH pulses (physiologic, not 24h flat)
  • Supporting joint, tendon, and connective-tissue recovery with a minimal side effect footprint

Pick MK-677 if:

  • Oral-only protocols are required (no interest or comfort with reconstitution/injection)
  • Convenience, long-term compliance, and minimal logistical overhead are top priorities
  • Broad-spectrum IGF-1 elevation and slight recomposition is the goal regardless of bodyfat pattern
  • Appetite stimulation is actually helpful (bulking, regaining weight, reversing restriction)
  • Budget, sourcing, and stability matter (MK-677 is inexpensive and shelf-stable vs. fragile tesamorelin)

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