Study amounts / who received each treatment
Sermorelin study doses describe tests, without choosing your treatment.
Sermorelin is a drug studied mainly in shots. Here you can read which people received these amounts, how researchers handled the drug, and why growth hormone stayed high after sermorelin had left blood.
What the Sermorelin amounts explain about the studies
Sermorelin acts briefly, though the growth hormone rise lasts longer. This page explains study amounts and why researchers chose their timing. Children received shots at bedtime, beneath the skin. Each child's weight determined the drug amount. Older men received fixed amounts twice daily over two weeks. Half of sermorelin leaves blood over ten to twelve minutes or so. A growth hormone rise can continue for about three hours.
Deep sleep brings a large growth hormone burst. That natural timing helped researchers choose bedtime shots. The amounts and hours answered study questions; they weren't chosen for your care.
How to keep the Sermorelin study amounts and weights separate
Children making too little growth hormone received 30 micrograms daily for every kilogram the child weighed. A microgram weighs one millionth of a gram. A kilogram weighs a little more than two pounds. Researchers gave these children shots at bedtime, beneath the skin [2]. Healthy older men received either 0.5 milligrams or 1 milligram of sermorelin. A milligram is a thousandth of a gram. Each amount was given twice daily over 14 days. These were shots under the skin. The larger amount produced higher growth hormone and higher insulin-like growth factor, the liver hormone that helps cells grow [5]. Another experiment gave healthy men sermorelin into a vein. The tested amounts were about 0.25-2 micrograms for every kilogram the men weighed. Growth hormone release was greatest around 1-2 micrograms per kilogram [3]. Those men received amounts based on weight, unlike the fixed amounts tested in older men.
These figures describe what researchers gave particular people. Laboratory sermorelin is a supply for experiments. That supply differs from a packaged patient medicine or a pharmacy-made prescription. The amounts used in Sermorelin studies don't set your dose.
How Sermorelin's effect can outlast the drug in blood
About half of sermorelin left blood within 10-12 minutes after researchers delivered sermorelin through a vein [3]. Growth hormone remained raised for roughly 3 hours after just one dose [3]. The gland continued responding after the drug began leaving. In the nose experiment, only about 3-5% of the dose reached blood [3]. Most failed to cross the nose lining. That experiment didn't test drugs swallowed or dissolved in the mouth. Those forms face other problems: digestion breaks protein chains apart, and little intact drug crosses the mouth lining.
Researchers changed related drugs to slow breakdown and extend time in blood. CJC-1295 joins to a blood protein that helps keep the drug present. Other changes can also slow breakdown. Longer action by itself doesn't establish a health gain for you.
The Sermorelin time measurements help explain study choices without setting a shot schedule.
What Sermorelin handling and pharmacy rules protect against
Researchers chiefly gave sermorelin under the skin; hormone tests also used veins. In an older experiment, about 3-5% of a nose-delivered dose reached blood [3]. Lab supplies come as sermorelin acetate, the drug combined with a protective salt. Freeze-drying means freezing the material and removing water to leave a dry powder. That name describes drying, rather than telling you to keep the powder frozen. Researchers add germ-free liquid and usually keep the resulting liquid cold. Sermorelin breaks down more easily in water.
For patient shots, pharmacy rule <797> covers keeping germs out while mixing medicine. The rule calls for clean work areas, equipment, and trained staff. Lab supplies differ from patient prescriptions; this description doesn't give you steps for preparing a shot.
Why swallowed Sermorelin may fail to reach blood intact
The nose experiment found that just 3-5% of the dose reached blood [3]. Another measurement found that half of sermorelin left blood within about 10-12 minutes. The first result concerns crossing the nose lining. Neither result was a test of all products taken through the mouth.
Digestion can break swallowed sermorelin apart before the drug gets into blood. A drug held under the tongue has to pass through the mouth lining instead. Little intact sermorelin is expected to pass through that lining. Researchers therefore chiefly delivered sermorelin through shots under the skin, which bypass digestion and the need to cross your mouth's lining before the drug reaches blood.
Those problems explain doubts about swallowed forms. The cited studies didn't compare every product, so you can't assume every preparation was tested.
What the old Sermorelin test measured in the gland
Doctors gave sermorelin to test the gland's ability to release growth hormone. A single amount near 1 microgram per kilogram the person weighed went into a vein. Each microgram weighs one millionth of a gram; a kilogram weighs just over two pounds. Doctors then measured the growth hormone rise.
Researchers found growth hormone release with amounts as low as 0.25 micrograms per kilogram. Release was greatest near 1-2 micrograms per kilogram [3]. Those tiny amounts answered a question about the gland's capacity to respond. The test didn't ask whether an adult felt younger.
A recorded test amount doesn't choose the dose for your care.
What deep sleep helped researchers time in Sermorelin trials
Your gland releases growth hormone into blood in separate bursts. A large nighttime burst comes near deep sleep [13]. Researchers chose bedtime shots to fit that usual timing. In the growth trial, children received sermorelin beneath the skin each day at bedtime [2].
The timing explains the experiment, rather than choosing your treatment hour.
What bedtime Sermorelin studies leave for a doctor to decide
Bedtime doses were chosen to coincide with the large growth hormone burst during deep sleep [13][2]. That timing served the study's question.
The reports don't establish the best treatment hour for you. A time selected for a trial isn't proof that the same time suits your health.