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Generic Name: Macimorelin [MA-si-moe-REL-in].
Drug Class: Growth hormones.

What is Macrilen?

Macrilen acts by stimulating an increase in the production of growth hormone (GH) within the body. Macrilen is utilized as an element of medical tests that are used to determine the amount of growth hormone (GH). Macrilen is also employed for other purposes that are not covered in this guideline.

Side effects of Macrilen

See a doctor immediately. Get medical attention immediately if you notice warning signs of an allergic response, such as symptoms of hives, difficulty breathing, or swelling of your lips, face, and tongue. Macrilen may cause serious side effects. Contact your doctor immediately in the event that you experience:

  • A feeling of lightheadedness, as if you're about to pass out.
  • Slow heartbeats.
  • Breathlessness.
  • Rapid or pounding heartbeats in the chest that are thumping, breathlessness, and suddenly feeling dizzy (like you're going to faint).

Common adverse effects of Macrilen can include:

  • Headache, dizziness.
  • Hunger, nausea, and diarrhea.
  • More sweating and feeling hot.
  • Being tired.
  • Changes in your sense of taste.
  • Symptoms of a cold like sinus pain, a stuffy nose, and a sore throat.

This is not an exhaustive list of probable adverse effects; more may occur. Consult your physician for advice regarding medical effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.


Similar or related drugs

Regular insulin, HumulinR, NovolinR, and Macimorelin


Follow all the instructions on the label of your medication and on the label of your package. Inform your health care providers about your medical issues, allergies, and any medications you take.

Before you take this drug

Discuss with your doctor all of the medications you are taking. Certain medications you take prior to your GH test may result in false results. You shouldn't be treated with Macrilen if you are allergic to it.

Speak to your doctor if you are ever diagnosed with:

  • A hormonal disorder.
  • A thyroid disorder.
  • Hypothalamus disorders.

Inform your doctor if you're into nursing or pregnant.

How to take Macrilen?

A minimum of one week before the GH test, you must stop taking any hormone growth medication. It is essential to fast prior to taking Macrilen. Do not take food or drink other than water for a minimum of 8 hours prior to your GH test. Macrilen is available in one dose. Your healthcare professional mixes this medication into a drink you consume in 30 seconds. After drinking Macrilen Your blood will be drawn for 30 minutes after drinking it, 45 minutes, 90 minutes, and 90 minutes after. This will help your doctor find out more about your medical condition.

What happens If I miss a dose?

Macrilen is one dose and does not have a daily dose schedule.

What happens if I overdose?

Since Macrilen is prescribed by a medical expert in a medical environment, it is highly unlikely for an overdose to occur.

What should be avoided?

Follow the instructions of your physician regarding any limitations on foods, drinks, or activities.

Interaction with other drugs

Inform your doctor about any other medications you take. It is possible to have false results if you're using specific medications prior to the GH test. You might have to discontinue the other medicines for a specified duration before you begin taking Macrilen. Macrilen could cause serious heart issues. The risk is higher if you take certain other medications to treat asthma, infections, or heart issues such as high blood pressure, mental illness, depression, malaria, cancer, or HIV. Numerous drugs can impact Macrilen. Prescription and over-the-counter drugs, vitamins, and herbal supplements are all included. The interactions between these products are not included in this list. Inform your doctor of all the medications you are currently taking as well as any new medications you are about to start or stop taking.