HGH
Also known as Somatropin (Genotropin, Norditropin, Omnitrope)
Quick facts
- Researched for
- Lean mass, fat loss, recovery, joint problems, endurance, sleep, skin quality and healthy aging
- Route or form
- Injection
- Evidence so far
- Four human findings, mostly in adults low in growth hormone, plus people's reports.
- Not established
- Studies don't show it's safe or helpful for healthy people chasing fitness or long life.
- Commonly researched
- Starts at 0.15 to 0.3 mg, once daily, then steps upPrescription label (branded medicine)See every range
- Where to get it
- No product link here.See why in Next step
By the Learn Peptides editorial team · Updated · How We Research
What people are researching it for
People are researching HGH for lean mass, fat loss, recovery, joint problems, endurance, sleep, skin quality, and healthy aging.
Recover. Recompose. Restore.
HGH (human growth hormone, somatropin) is a 191-amino-acid hormone that signals through the GH/IGF-1 axis.
- What is HGH?
- Checklist: Not a fast-acting anabolic
- Checklist: 191 amino acids
- How does it work?
- Note: Its effects are usually described as gradual and cumulative over weeks to months.
- Common research use cases
- Not written out in this text version.
- How it's used in research
- Route: Subcutaneous (most common)
- Route: Timing varies by protocol
- Common dosing: 1 to 2 IU/day: wellness / recovery
- Common dosing: 2 to 4 IU/day: body composition / recovery
- Common dosing: 4+ IU/day: advanced physique use
- Monitoring: IGF-1
- Monitoring: Fasting glucose / A1C
- Monitoring: Fluid retention
- Monitoring: Blood pressure
- There is no standardized dose or protocol. Research use should be thoughtful, tracked, and adjusted based on individual response.
- What users report
- Keep in mind: Hand numbness / carpal-tunnel-type symptoms
- Keep in mind: Water retention / puffiness
- Keep in mind: Daytime lethargy in some users
- Keep in mind: Glucose changes and insulin sensitivity concerns
- Key takeaway
- HGH is usually described as a slow-burn recovery and body-composition tool, not a dramatic standalone muscle builder.
- Its biggest appeal is better recovery, sleep, leanness, and overall appearance, but users watch closely for edema, numb hands, and glucose changes.
- The bottom line
- Forum sentiment around HGH is strongest for recovery, sleep, body composition, and general appearance. Results build gradually, benefits are highly individual, and meaningful side-effect and monitoring considerations should not be ignored.
Reasons people look into HGH. An interest is not a promise that it works.
- Injury & recovery
- Weight loss & metabolic
- Body composition & performance
- Sleep
- Longevity & energy
People report slow body and sleep gains, plus puffiness, numbness and blood sugar shifts.
Community reports
People commonly describe gradual changes in body composition, recovery, joints, skin, or sleep over weeks to months. Fluid retention, numbness, and blood-sugar changes also come up often.
Community reports
People use HGH mostly for losing stubborn fat (especially around the middle), sleeping better, and feeling like they bounce back faster from workouts, injuries, and surgery. The read is generally positive, but a vocal minority says it did almost nothing for them unless their own levels were low to begin with.
In people who truly lack growth hormone, trials found more muscle and less fat.
In people who truly lack , replacement can increase lean mass, reduce body fat, and improve some exercise measures. Older studies also found physical changes in healthy older men.
Real human . The strongest human evidence in this reference comes from people whose bodies don't make enough of it.
What this is based on
- Human researchStudied in people for this or a related question.
- Community reportsWhat people describe noticing. Not proof of cause.
- Learn Peptides explanationOur own plain-English summary of the sources. It is not a source itself.
Studies don't show it's safe or helpful for healthy people chasing fitness or long life.
Those replacement studies do not prove that HGH is safe or beneficial for healthy people using it for performance or longevity.
Safety notes
Tested in people. How many took part, for how long, and who they were still matter.
- You have trouble breathing or wheezing, or your face, lips, tongue or throat swell.
- You get hives away from the injection site, or feel severely dizzy or faint.
For these signs, call 911 or your local emergency number.
- Redness spreads, or heat, swelling or pain keeps growing where you injected.
- A lump keeps growing or does not go away, or you see pus or red streaks.
- You have a fever or chills, or feel sick all over.
- Cancer, now or in the past. labels say not to use it with active cancer, and it can speed the growth of existing tumors.
- Diabetes, or you take insulin or blood-sugar medicine. can raise blood sugar and make diabetes harder to control.
- Banned in drug-tested sport.
Questions to bring to your doctor
Only for the conditions this page cautions about. Bring this page with you.
- I have or had cancer. Should I avoid HGH, and what would you watch for?
- Would my insulin or blood-sugar medicine need to change if I used HGH?
Shows the Genotropin label starting dose and figures people report, each labeled.
Commonly researched ranges, and how they were measured.
Commonly researched range for HGH
Starting dose
0.15 to 0.3 mg
once daily · Injection
Prescription label (branded medicine)
This is the label amount for the branded medicine Genotropin. It is not a dosing instruction for other products.
How the dose steps up
Each schedule comes from one source, shown in order. Do not mix steps from different sources.
Genotropin label (branded medicine)
- Step 1 of 2: Start0.15 to 0.3 mg once daily
- Step 2 of 2: Every 1 to 2 monthsUp by about 0.1 to 0.2 mg a day, based on response and IGF-1 levels
This is the label’s starting amount for adults low in growth hormone. It is not a dosing instruction for other products.
The range in our record
Each one is labeled with where it comes from. Some are parts of the step-up schedules above. Do not mix steps from different sources.
Adult growth hormone deficiency, starting amount (not based on body weight)
Prescription label (branded medicine)FDA label (Genotropin)- Amount per dose
- 0.15 to 0.3 mg
- How often
- Once daily
- Typical schedule
- Increase by ~0.1-0.2 mg/day every 1-2 months based on response and IGF-1 levels
- Route
- Injection
This is the label amount for the branded medicine Genotropin. It is not a dosing instruction for other products.
From our visual summary
Community reports
Community reports, from the Learn Peptides visual summary. These lines sit beside the ranges above and are not merged with them.
- Common dosing
- 1 to 2 IU/day: wellness / recovery
- 2 to 4 IU/day: body composition / recovery
- 4+ IU/day: advanced physique use
- Monitoring
- IGF-1
- Fasting glucose / A1C
- Fluid retention
- Blood pressure
There is no standard dose. Track how you respond, and change one thing at a time.
These ranges were last reviewed Sep 2026.
Real growth hormone, sold as Genotropin and others, mostly studied in adults who lack it.
HGH is human itself, sold under brand names like Genotropin, Norditropin, and Omnitrope (generically, somatropin). Most of the strongest evidence comes from adults diagnosed with a real growth hormone deficiency, not from healthy people using it for body composition or recovery. It's given as an injection.
Next step
No partner product
We have no US Precision Peptides listing for HGH, so there is no product link. That says nothing about the research.
About product links
Purchases at US Precision Peptides help keep Learn Peptides free.