Relugolix Side Effects

Medically reviewed by Drugs.com. Last updated on Nov 5, 2024.

Applies to relugolix: oral tablet.

Common side effects of relugolix

Some side effects of relugolix may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common side effects

• bone pain
• constipation
• diarrhea
• difficulty in moving
• feeling of warmth
• fever
• lack or loss of strength
• muscle aches, cramps, pain, or stiffness
• neck pain
• pain in the joints
• redness of the face, neck, arms and occasionally, upper chest
• stomach cramps or tenderness
• swollen joints
• watery or bloody diarrhea

Less common side effects

• decreased interest in sexual intercourse
• discouragement
• feeling sad or empty
• inability to have or keep an erection
• irritability
• loss in sexual ability, desire, drive, or performance
• loss of interest or pleasure
• swelling of the breasts or breast soreness
• trouble concentrating
• trouble sleeping

Serious side effects of relugolix

Along with its needed effects, relugolix may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking relugolix:

Less common side effects

• chest pain or discomfort
• confusion
• difficulty in speaking
• double vision
• headache
• inability to move the arms, legs, or facial muscles
• inability to speak
• nausea
• pain or discomfort in the arms, jaw, back, or neck
• slow speech
• sweating
• vomiting

Rare side effects

• bleeding gums
• cloudy urine
• coughing up blood
• decreased frequency or amount of urine
• difficult, burning, or painful urination
• difficulty in swallowing
• dizziness
• fainting
• frequent urge to urinate
• increased menstrual flow or vaginal bleeding
• increased thirst
• loss of appetite
• lower back or side pain
• nosebleeds
• paralysis
• prolonged bleeding from cuts
• red or black, tarry stools
• red or dark brown urine
• slow, fast, pounding, or irregular heartbeat
• swelling of the face, fingers, or lower legs
• trouble breathing
• unusual tiredness or weakness
• weight gain

Incidence not known

• large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

For healthcare professionals

Applies to relugolix: oral tablet.

General adverse events

The most commonly reported side effects included hot flush, increased glucose, increased triglycerides, and musculoskeletal pain.^[Ref]

Cardiovascular

• Very common (10% or more): Hot flush (up to 54%)
• Common (1% to 10%): Fatal and non-fatal myocardial infarction, stroke
• Uncommon (0.1% to 1%): Fatal myocardial infarction, arrhythmia, atrioventricular block, cardiac failure^[Ref]

Dermatologic

• Common (1% to 10%): Angioedema, hyperhidrosis
• Postmarketing reports: Urticaria^[Ref]

Endocrine

• Common (1% to 10%): Gynecomastia^[Ref]

Gastrointestinal

• Very common (10% or more): Constipation (up to 12%), diarrhea (up to 12%)
• Uncommon (0.1% to 1%): Abdominal pain
• Frequency not reported: Colitis^[Ref]

Genitourinary

• Uncommon (0.1% to 1%): Urinary tract infection^[Ref]

Hematologic

• Very common (10% or more): Decreased hemoglobin (up to 28%)
• Uncommon (0.1% to 1%): Hemorrhage^[Ref]

Hepatic

• Very common (10% or more): Increased ALT (up to 27%), increased AST (up to 18%)^[Ref]

Hypersensitivity

• Postmarketing reports: Hypersensitivity^[Ref]

Metabolic

• Very common (10% or more): Increased glucose (up to 44%), increased triglycerides (up to 35%)
• Common (1% to 10%): Increased weight^[Ref]

Musculoskeletal

• Very common (10% or more): Musculoskeletal pain (up to 30%)
• Uncommon (0.1% to 1%): Fracture
• Frequency not reported: Arthralgia, arthritis, back pain, bone pain, extremity pain, musculoskeletal chest pain, musculoskeletal discomfort, musculoskeletal stiffness, myalgia, neck pain, non-cardiac chest pain, spinal pain^[Ref]

Oncologic

• Uncommon (0.1% to 1%): Metastatic lung cancer^[Ref]

Other

• Very common (10% or more): Fatigue (up to 26%)
• Frequency not reported: Asthenia^[Ref]

Psychiatric

• Common (1% to 10%): Insomnia, depression, decreased libido^[Ref]

Renal

• Uncommon (0.1% to 1%): Acute kidney injury^[Ref]

Respiratory

• Uncommon (0.1% to 1%): Pneumonia^[Ref]

Further information

Relugolix side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer