Macimorelin
Also called Macrilen, Ghryvelin
Oral (by mouth)Product label
Research reference
Product label
Macrilen single-visit stimulation test
One oral dose of 0.5 mg/kg after at least 8 hours fasting
A single supervised testing visit with timed blood samples
Macrilen label (2026) ↗When results may show
- When change was measured
- The result is a timed GH response, not a course for increasing GH. QT and interacting-drug checks matter.
- When to assess
- A single supervised testing visit with timed blood samples
- Conditions and limitations
- Adults being assessed for growth-hormone deficiency. Clinical-team preparation, screening and sampling are required. Do not make a recurring home schedule or adjust medicines using this summary.
- When to stop
- Use the exact product's clinical monitoring and stopping instructions. A supply interval is not a stop date; severe or persistent reactions need prompt clinical review.
Sources: Macrilen label (2026)
Research timing is descriptive, not a promise or personal instruction. A severe or persistent reaction needs prompt clinical review. This is not medical advice.
Modelled level — every day
1× is the peak after a single dose.
- Steady-state peak
- 1.02× single dose
- Time to steady state
- 20hours
- Administrations
- 7/ week
Read off the modelled curve, not an even-interval formula
About five half-lives
Where these numbers come from
- Macrilen label (2026)Clinical-team preparation, screening and sampling are required. Do not make a recurring home schedule or adjust medicines using this summary.