Somatropin dosage and evidence

What is Somatropin?

How does Somatropin work?

It switches on growth hormone receptors directly. That raises IGF-1 and drives growth, protein building and changes in how the body uses fuel.

What do people who took Somatropin report?

This is what real people say happened to them, good and bad. Nobody measured it. A report cannot tell a real effect from the lift people get just from expecting it to work, from a diet or training change made at the same time, or from what was really in the vial. We still put it near the top. It is the next best thing to a study in people: what happens when real people use it, including what goes wrong.

• Fluid retention is the effect people notice first and describe most consistently. Swollen hands in the second week, numbness in the hands and wrists at night, and a couple of kilos of water in the first week appear again and again, and they are described as dose-related in a tight way, with people reporting that a one unit increase was the difference between comfortable and not.
• Carpal tunnel symptoms are the specific form that complaint usually takes, and dropping the dose is the response people describe. Several describe resolving it by halving what they were taking.
• Doses discussed sit mostly between two and four units daily, with a widely repeated view that going beyond about five is not worth it outside competition. Some describe splitting a larger dose across the week instead.
• Sleep reports contradict each other flatly. Insomnia on it is common, and so is the report that a higher dose makes people sleepy, and both come from experienced users.
• A recurring disappointment thread runs through the discussion, of people using it for months across a range of doses and reporting only water retention, a raised heart rate and poor sleep for the money. Cost as the reason to stop is raised constantly.
• Individual variation in blood work is treated as the central problem. People describe two to four units moving their IGF-1 substantially while the same amount moves someone else's not at all, and the more careful posters insist on a baseline test and a retest after several weeks rather than judging by feel.
• Product authenticity dominates a large share of the threads. Generic vials identified only by cap colour are described as unstandardised, with the same colour meaning different things from different manufacturers, and purity testing results are traded. Growth of hands, feet and facial features is raised as a long-term worry in a separate set of threads.

Sources: MESO-Rx threads on thinksteroids.com about HGH dosing, what people feel on it, side effects, generic product identification and whether it is worth the cost, plus ExcelMale threads on carpal tunnel symptoms, found by site-restricted search and read directly, September 2026. Nothing above is attributed to any specific post and no post is reproduced.

The evidence, in charts

The studies we cite

• Study in people1989
  The effects of treatment with recombinant human growth hormone on body composition and metabolism in adults with growth hormone deficiency

  Growth hormone changed what the body was made of without changing what the scales said. Twenty four adults whose bodies made too little growth hormone took it for six months, against others given a dummy version. They gained about 5.5 kg of muscle and lost about 5.7 kg of fat. Total weight barely moved, because the two changes cancelled out. These were people with a diagnosed shortage. It does not say what happens in someone whose own levels are normal.

  Six months of rhGH in 24 GH-deficient adults raised lean mass by 5.5 kg and cut fat mass by 5.7 kg versus placebo, with no change in body weight.

  PMID 2687691 New England Journal of Medicine
• Study in people2012
  Discontinuing long-term GH replacement therapy: a randomized, placebo-controlled crossover trial in adult GH deficiency

  Take growth hormone away from adults who need it and most things get worse. 60 adults with a pituitary shortage, treated for about ten years, were switched onto a dummy for four months. Their IGF-1 fell sharply. Two aspects of quality of life declined. Waists grew, deep belly fat rose, and cholesterol and an inflammation marker worsened. One thing improved: their response to insulin got better. This is about people with a diagnosed shortage, not about anybody whose own levels are normal.

  60 hypopituitary adults on GH for a mean of 10 years were crossed over to four months of placebo. IGF-1 fell from 168 to 98 micrograms per litre, two quality-of-life domains deteriorated, waist circumference and visceral fat rose, and lipids and C-reactive protein worsened, while insulin sensitivity improved.

  PMID 22791760 Journal of Clinical Endocrinology and Metabolism
• Review of studies2011
  Evaluation and treatment of adult growth hormone deficiency: an Endocrine Society clinical practice guideline

  Guidelines from the Endocrine Society, a doctors' group. In adults with a confirmed growth hormone shortage, treatment helps body makeup, exercise ability, bone strength and quality of life.

  Guideline: GH therapy benefits body composition, exercise capacity, skeletal integrity and quality of life in confirmed adult GH deficiency.

  PMID 21602453 Journal of Clinical Endocrinology and Metabolism