Also known as: HGH Frag 176-191 · HGH Frag · hGH 176-191 · Fragment 176-191 · Frag 176-191 · Frag 176 · GH fragment 176-191
Updated 33 sources
Every HGH Fragment 176-191 protocol on file, 7 in all, labelled by where each number came from.
Who: Adults using research peptides; no human trial has dosed the unmodified fragment.
Timing: Fasted, usually first thing in the morning; wait 30 to 60 minutes before eating. A second dose goes at least 3 hours after the last meal.
Note: The range is community practice. The rodent studies behind the fragment used far higher doses per kg, so this is not a scaled trial dose.
Timing: Morning fasted and/or before bed on an empty stomach; 30 minutes before meals.
Note: The guide calls this a research protocol and also says no official human dosing exists.
Timing: Morning on an empty stomach; wait at least 30 minutes before eating.
Timing: Both doses on an empty stomach; the evening dose at least 3 hours after the last meal.
Note: The guide calls this the most widely used schedule.
Note: One guide's top tier, for people who already ran the standard schedule.
Note: The guide cites "clinical trial data showing 1 mg effective dose" without naming a trial; no human trial has dosed this fragment, and the 1 mg AOD-9604 results FDA summarizes are for a different molecule. One Reddit user ran 500 to 1000 mcg every morning for 2 months and reported no result.
Timing: Fasted, just before cardio or a workout.
Note: No study has tested pre-cardio timing; one guide calls it plausible folklore.
Doses shown are what sources report, labelled by origin. Not medical advice.
| Water | Strength | 250 mcgdose, units | 500 mcgdose, units | 1,000 mcgdose, units |
|---|---|---|---|---|
| 2 mg vial | ||||
| 0.8 mLCompetitor guide | 2.5 mg/mL | 100.1 mL | 200.2 mL | 400.4 mL |
| 1 mLCompetitor guide | 2 mg/mL | 12.50.125 mL | 250.25 mL | 500.5 mL |
| 2 mLCompetitor guide | 1 mg/mL | 250.25 mL | 500.5 mL | 1001 mL |
| 5 mg vial | ||||
| 2 mLCompetitor guide | 2.5 mg/mL | 100.1 mL | 200.2 mL | 400.4 mL |
| 2.5 mLCompetitor guide | 2 mg/mL | 12.50.125 mL | 250.25 mL | 500.5 mL |
| 10 mg vial | ||||
| 2 mLCompetitor guide | 5 mg/mL | 50.05 mL | 100.1 mL | 200.2 mL |
Doses shown are what sources report, labelled by origin. Not medical advice.
Calculate with this peptideYour vial, your water, your dose: HGH Fragment 176-191 in syringe units, with the math shown.Diluent: Bacteriostatic water; some users add a little acetic acid first
Water volumes sources use: 0.8 mL, 1 mL, 2 mL, 2.5 mL
Gelling and cloudiness are common complaints, including 5 mg vials that turned to gel after 1 mL of BAC water. The usual community fix is a small amount of acetic acid first, then BAC water; reported strengths vary widely (0.6% in one post, 30% in another). Pick one water volume and keep it the same for every vial.
Community practice is 250 to 500 mcg a day, injected under the skin fasted, as one or two doses, for 8 to 12 weeks. No human trial set this dose.
It depends on the water. A 5 mg vial with 2 mL of bacteriostatic water puts 250 mcg at 10 units on a U-100 insulin syringe. A 2 mg vial with 2 mL puts it at 25 units. Use the calculator for your own vial.
Guides say refrigerate at 2 to 8 C and use it within 14 to 21 days; one says 28 days. Do not freeze it once mixed.
12 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.
Back to the full HGH Fragment 176-191 page for side effects, storage, stacks and legal status.