Relugolix Dosage

Medically reviewed by Drugs.com. Last updated on May 5, 2023.

Usual Adult Dose for Prostate Cancer

Loading Dose: 360 mg orally once on the first day
Maintenance Dose: 120 mg orally once a day

Comment:

• Treatment is usually continued upon development of nonmetastatic or metastatic castration-resistant prostate cancer in patients treated with gonadotropin-releasing hormone (GnRH) receptor agonists and antagonists.

Use: Treatment of patients with advanced prostate cancer

Renal Dose Adjustments

Data not available.

Liver Dose Adjustments

Data not available.

Dose Adjustments

USE WITH P-GP INHIBITORS:

• Coadministration should be avoided.
• If coadministration is unavoidable: Take this drug FIRST and separate dosing by at least 6 hours.
• If a short course with a P-gp inhibitor is required: This drug may be interrupted for up to 2 weeks.
• If this drug is interrupted for more than 7 days:
• Day 1: 360 mg orally ONCE
• Maintenance Dose: 120 mg orally once a day

USE WITH A COMBINED P-GP AND STRONG CYP450 3A INDUCERS:

• Coadministration should be avoided.
• If coadministration is unavoidable: Increase the dose of this drug to 240 mg once a day.
• The original maintenance dose of 120 mg/day may be resumed after discontinuation of the combined P-gp and strong CYP450 3A inducer.

Precautions

CONTRAINDICATIONS:

• Severe hypersensitivity to the active component or any of the ingredients

Safety and efficacy have not been established in patients younger than 18 years.

Consult WARNINGS section for additional precautions.

Dialysis

Data not available.

Other Comments

Administration advice:

• Swallow whole; do not chew or crush.
• This drug can be taken with or without food at approximately the same time each day.
• Take a missed dose as soon as possible.
• If a dose is missed and cannot be taken within 12 hours, skip that dose and take the next dose at the usual time.
• If treatment is interrupted for greater than 7 days, restart with a loading dose of 360 mg on the first day and continue with a dose of 120 mg once a day.

Storage Requirements:

• Store at room temperature; do not store above 30C (86F).

Monitoring:

• Cardiovascular: ECG
• Endocrine: Prostate specific antigen (PSA) levels
• Metabolic: Serum electrolytes

Patient advice:

• Advise the patient to read the US FDA-approved patient labeling.
• Inform patients that this drug can be harmful to a developing fetus and can cause loss of pregnancy.
• Advise males with female partners of reproductive potential to use effective contraception during therapy and for at least 2 weeks after the last dose.
• Advise patients that this drug may prolong the QT interval and to report any signs of symptoms of QT prolongation.
• Inform patients that this drug may cause hot flashes, flushing of the skin, increased weight, decreased sex drive, and difficulties with erectile function.
• Inform patients that this drug may cause infertility.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer