Lupron Side Effects

Generic name: leuprolide

Medically reviewed by Drugs.com. Last updated on Jan 1, 2025.

Note: This document provides detailed information about Lupron Side Effects associated with leuprolide. Some dosage forms listed on this page may not apply specifically to the brand name Lupron.

Applies to leuprolide: emulsion, powder for suspension 1 month, powder for suspension 3 month, powder for suspension 4 month, powder for suspension 6 month, solution.

Precautions

It is very important that your doctor check the you or your child's progress at regular visits to make sure that this medicine is working properly. Blood and urine tests may be needed to check for unwanted effects.

This medicine may cause serious allergic reaction, including anaphylaxis, which can be life-threatening and requires immediate medical attention. Call your doctor right away if you have a rash, itching, hoarseness, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth while you are using this medicine.

For female patients: You should not receive this medicine if you are pregnant or may become pregnant. Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.

Patients receiving leuprolide (the active ingredient contained in Lupron) for central precocious puberty (CPP):

• If you are a female patient, you may have occasional vaginal bleeding or spotting. If you continue to have heavy bleeding or regular periods after 2 months of using this medicine, call your doctor.
• If you develop a rash or irritation at the injection site, check with your doctor right away.
• This medicine may cause some people to be agitated, irritable, or display other abnormal behaviors. Make sure the doctor knows if you have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless. Also tell the doctor if you have sudden or strong feelings, such as feeling nervous, angry, restless, violent, or scared. If you or your caregiver notice any of these side effects, tell your doctor right away.
• Using this medicine may increase your risk of having seizures. Check with your doctor right away if you start to have convulsions, muscle spasm or jerking of all extremities, sudden loss of consciousness, or loss of bladder control.
• This medicine may cause intracranial hypertension or pseudotumor cerebri (increased pressure in the head) in children. Check with your doctor right away if your child has blurred or double vision, change in ability to see colors, especially blue or yellow, continuing ringing or buzzing or other unexplained noise in the ears, dizziness, eye pain, hearing loss, nausea and vomiting, or severe headache.

Patients receiving leuprolide for endometriosis or for anemia caused by tumors of the uterus:

• For the first few days of treatment, the symptoms of your condition may get worse. This is normal. Do not stop using this medicine. Talk with your doctor if you have concerns about this.
• During the time you are receiving leuprolide, your menstrual period may not be regular or you may not have a menstrual period at all. This is to be expected when being treated with this medicine. If regular menstruation does not begin within 60 to 90 days after you stop receiving this medicine, check with your doctor.
• This medicine can cause your bone mineral density to decrease, which may lead to osteoporosis or weakened bones. Talk with your doctor about how this risk will affect you.
• During the time you are receiving leuprolide, you should use birth control methods that do not contain hormones (eg, condoms, spermicide). If you have any questions about this, check with your doctor.
• If you suspect that you may have become pregnant, stop using this medicine and check with your doctor right away. There is a chance that continued use of leuprolide during pregnancy could cause birth defects or a miscarriage.
• This medicine may cause some people to be agitated, irritable, or display other abnormal behaviors. Make sure the doctor knows if you have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless. Also tell the doctor if you have sudden or strong feelings, such as feeling nervous, angry, restless, violent, or scared. If you or your caregiver notice any of these side effects, tell your doctor right away.
• Using this medicine may increase your risk of having seizures. Check with your doctor right away if you start to have convulsions, muscle spasm or jerking of the arms or legs, sudden loss of consciousness, or loss of bladder control.

Patients receiving leuprolide for advanced prostate cancer:

• At first, some of your symptoms might get worse for a short time or you might have new symptoms. You might have bone pain, back pain, a tingling or numbness in the body, blood in the urine, or trouble urinating. Tell your doctor if you have any new symptoms or if your symptoms get worse.
• This medicine may affect blood sugar levels. If you notice a change in the results of your blood or urine sugar tests or if you have any questions, check with your doctor.
• This medicine may increase your risk of having a heart attack or stroke. Check with your doctor right away if you are having chest pain or discomfort, nausea or vomiting, pain or discomfort in the arms, jaw, back, or neck, confusion, slurred speech, or weakness.
• This medicine can cause changes in your heart rhythm, including a condition called QT prolongation. It may change the way your heart beats and cause fainting or serious side effects. Contact your doctor right away if you have any symptoms of heart rhythm problems, such as fast, pounding, or irregular heartbeats.
• This medicine can cause your bone mineral density to decrease, which may lead to osteoporosis or weakened bones. Talk with your doctor about how this risk will affect you.
• Using this medicine may increase your risk of having seizures. Check with your doctor right away if you start to have convulsions, muscle spasm or jerking of the arms or legs, sudden loss of consciousness, or loss of bladder control.
• Some men who use this medicine have become infertile (unable to have children). Talk with your doctor before using this medicine if you plan to have children.

Before you have any medical tests, tell the medical doctor in charge that you are using this medicine. The results of some tests may be affected by this medicine.

Serious side effects of Lupron

Along with its needed effects, leuprolide 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 leuprolide:

For adults

Less common side effects

• fast or irregular heartbeat

Rare side effects

• bone, muscle, or joint pain
• chest tightness
• fainting
• fast or irregular breathing
• numbness or tingling of the hands or feet
• puffiness or swelling of the eyelids or around the eyes
• skin rash, hives, or itching
• sudden, severe decrease in blood pressure and collapse
• trouble breathing

For males only (adults)

More common side effects

• arm, back, or jaw pain
• bloody or cloudy urine
• blurred vision
• bone pain
• chest pain or discomfort
• difficult, burning, or painful urination
• difficulty with moving
• dizziness
• frequent urge to urinate
• headache
• increased urge to urinate during the night
• muscle pain or stiffness
• nausea
• nervousness
• pain in the arms or legs
• pain in the joints
• pale skin
• pounding in the ears
• slow or fast heartbeat
• sweating
• unusual bleeding or bruising
• unusual tiredness or weakness
• waking to urinate at night

Rare side effects

• pain in the groin or legs (especially in the calves)

Incidence not known

• altered mental status
• anxiety
• blurred vision
• burning, numbness, tingling, or painful sensations
• chest pain
• cold, clammy, pale skin
• confusion
• dizziness or lightheadedness
• double vision
• dry mouth
• flushed, dry skin
• fruit-like breath odor
• increased hunger
• increased thirst
• increased urination
• irregular heartbeat
• loss of consciousness
• seizures
• thoughts or attempts at killing oneself
• unexplained weight loss
• unsteadiness or awkwardness
• visual changes
• weakness in the arms, hands, legs, or feet

For females only (adults)

Rare side effects

• anxiety
• deepening of voice
• increased hair growth
• mental depression
• mood changes

For children

More common side effects

• body aches or pain
• chest tightness
• chills
• cough
• cough producing mucus
• difficulty in breathing
• ear congestion
• fever
• headache
• loss of voice
• muscle aches
• noisy breathing
• pain or redness at the injection site
• runny or stuffy nose
• sneezing
• sore throat
• unusual tiredness or weakness

Less common side effects

• irritability
• mood or mental changes

Rare side effects

• burning, itching, or swelling at the injection site

Incidence not known

• blurred vision
• change in ability to see colors, especially blue or yellow
• nausea and vomiting
• seizures
• severe headache

For females only (children)—expected in first few weeks

Rare side effects

• vaginal bleeding (continuing)
• white vaginal discharge (continuing)

Other side effects of Lupron

Some side effects of leuprolide 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:

For adults

More common side effects

• sudden sweating and feeling of warmth (hot flashes)

Less common side effects

• bleeding, bruising, burning, itching, pain, redness, or swelling at the injection site
• decreased interest in sexual intercourse
• swelling of the feet or lower legs
• swelling or increased tenderness of the breasts
• trouble sleeping
• weight gain

For females only (adults)

More common side effects

• light, irregular vaginal bleeding
• stopping of menstrual periods

Less common side effects

• burning, dryness, or itching of the vagina
• pelvic pain

For males only (adults)

More common side effects

• back pain
• chills
• constipation
• cough
• diarrhea
• fever
• general feeling of discomfort or illness
• loss of appetite
• pain or discomfort at the injection site
• redness of the face, neck, arms, and occasionally, upper chest
• runny nose
• shivering
• sore throat
• unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness

Less common side effects

• decreased size of the testicles
• inability to have or keep an erection

Incidence not known

• increased sensitivity of the skin to sunlight
• redness or other discoloration of the skin
• severe sunburn

For children

More common side effects

• constipation
• feeling of warmth
• redness of the face, neck, arms and occasionally, upper chest
• stomach pain

See also:

For healthcare professionals

Applies to leuprolide: intramuscular kit, intramuscular powder for injection, intramuscular powder for injection extended release, subcutaneous emulsion, subcutaneous implant, subcutaneous kit, subcutaneous powder for injection extended release, subcutaneous solution.

General adverse events

The most commonly reported side effects were hot flashes or sweats, gastrointestinal disorders, hyperhidrosis, edema, emotional lability or depression, respiratory disorder, urinary disorder, nausea or vomiting, injection site reaction, joint disorders, testicular atrophy, asthenia, flu syndrome, headache, skin reaction, fatigue, and pain.^[Ref]

Cardiovascular

• Very common (10% or more): ECG changes (19%), ischemia (19%), hot flashes or sweats (57%)
• Common (1% to 10%): Hypertension, murmur, phlebitis, thrombosis, arrhythmias, angina pectoris, myocardial infarction, vasodilation
• Frequency not reported: Cardiovascular collapse, palpitations, tachycardia, bradycardia, varicose vein, atrial fibrillation, deep thrombophlebitis, mitral valve incompetence, tricuspid valve incompetence, irregular heart rate, pallor, prolonged QT interval
• Postmarketing reports: Deep vein thrombosis, hypotension, pulmonary embolism, congestive heart failure^[Ref]

Dermatologic

• Very common (10% or more): Hyperhidrosis (up to 98%), hair loss (18%)
• Common (1% to 10%): Alopecia, skin rash, acne, itching, dry skin, ecchymosis, pruritus, photosensitivity, clamminess, night sweats, skin pigmentation, skin reactions, skin/mucous membrane reaction
• Frequency not reported: Hair disorder, nail disorder, cellulitis, herpes zoster, melanosis, dermatitis, macropapular rash, actinic keratosis, hirsutism, skin hypertrophy, carcinoma of skin or ear, skin lesions
• Postmarketing reports: Photosensitivity reactions^[Ref]

Endocrine

• Common (1% to 10%): Decreased testicular size
• Very rare (less than 0.01%): Pituitary apoplexy (following initial administration in patients with pituitary adenoma)
• Frequency not reported: Androgen-like effect, transient increase in serum testosterone concentrations during the first 2 days of therapy, initial flare of symptoms with management of endometriosis or flare phenomenon, feminization, goiter^[Ref]

Pituitary apoplexy included sudden headache, vomiting, visual changes, ophthalmoplegia, altered mental status, and sometimes cardiovascular collapse.^[Ref]

Gastrointestinal

• Very common (10% or more): Nausea/vomiting (up to 25%), altered bowel function (up to 14%), constipation (up to 14%), diarrhea (up to 14%), gastrointestinal disorders (14%)
• Common (1% to 10%): Dyspepsia, gastroenteritis or colitis, dysphagia, flatulence, gastrointestinal (GI) bleeding, peptic ulcer, rectal polyps, duodenal ulcer
• Frequency not reported: Dry mouth, eructation, enlarged abdomen, gingivitis, gum hemorrhage, intestinal obstruction, periodontal abscess, rectal disorder, hematochezia, retching, abdominal distention, taste disorders^[Ref]

Genitourinary

• Very common (10% or more): Vaginal dryness (37%), vaginitis (up to 28%), breast tenderness (14%), erectile dysfunction, urinary disorder (12%)
• Common (1% to 10%): Breast changes, breast enlargement, breast pain, breast soreness or tenderness, menstrual disorders, urinary frequency or urgency, hematuria, urinary tract infection, ovarian hyperstimulation, testicular soreness or pain, penile disorder, vaginal hemorrhage, gynecomastia, decrease in testicular size, impotence, testicular atrophy, vulvovaginal dryness, spotting
• Frequency not reported: Dysuria, lactation, urinary tract obstruction, balanitis, decreased urine specific gravity, gynecomastia, penis disorders, testis disorders, epididymitis, urinary incontinence, pelvic pain, dysmenorrhea, pollakiuria, bladder spasms, metrorrhagia, vulvovaginitis
• Postmarketing reports: Prostate pain^[Ref]

Hematologic

• Common (1% to 10%): Anemia
• Frequency not reported: Decreased red blood cell count (RBC)/hematocrit/hemoglobin, thrombocytopenia, leucopenia, increased platelets, leukopenia, lymphedema, increased WBC, lymphadenopathy, eosinophilia, purpura
• Postmarketing reports: Decreased white blood cell count (WBC)^[Ref]

Hepatic

• Common (1% to 10%): Increased liver enzymes
• Frequency not reported: Hepatitis, hepatomegaly, jaundice, increased liver function tests
• Postmarketing reports: Hepatic dysfunction, serious liver injury^[Ref]

Hypersensitivity

• Frequency not reported: Anaphylaxis, hypersensitivity reactions, allergic reaction
• Postmarketing reports: Anaphylactic reactions (e.g., rash, pruritus, urticaria, wheezing or interstitial pneumonitis, anaphylactic reactions)^[Ref]

Immunologic

• Frequency not reported: Flu syndrome^[Ref]

Local

• Frequency not reported: Erythema, ecchymosis, induration, abscess, swelling, injection site nodule, ulcers, irritation, necrosis at the site of injection, injection site reaction, gait disturbance^[Ref]

Metabolic

• Very common (10% or more): Weight gain/loss (up to 13%), edema (14%)
• Common (1% to 10%): Anorexia
• Uncommon (0.1% to 1%): Abnormal lipids
• Frequency not reported: Appetite changes
• Frequency not reported: Thirst, hyperglycemia, hyperuricemia, dehydration, hyperlipidemia, gout, hyperkalemia, increased bilirubin, insulin resistance
• Postmarketing reports: Diabetes^[Ref]

Musculoskeletal

• Very common (10% or more): Arthralgia (up to 12%)
• Common (1% to 10%): Bone or joint pain, myalgia, ankylosing spondylosis, arthritis, blurred disc margins, bone fracture, joint disorder, leg cramps, muscle stiffness, muscle weakness or tenderness, pelvic fibrosis, spasms, or cramps
• Uncommon (0.1% to 1%): Weakness of lower extremities
• Frequency not reported: Backache, muscle atrophy, limb pain, loss of bone mineral density, neck pain, ptosis, rib fracture, bursitis, osteoarthritis, pain in extremity, arthropathy
• Postmarketing reports: Joint or muscle pain, spinal fracture or paralysis, tenosynovitis-like symptoms, decreased bone density^[Ref]

Nervous system

• Very common (10% or more): Headache (sometimes severe [up to 65%]), migraine (up to 65%), asthenia (up to 18%), dizziness/lightheadedness (up to 16%), vertigo (up to 16%)
• Common (1% to 10%): Memory disorder, neuromuscular disorder, paresthesia
• Frequency not reported: Convulsions, syncope, taste perversion, hypesthesia, tinnitus, abnormal thinking, amnesia, confusion, dementia, cerebrovascular accident/transient ischemic attack, hyperkinesia, ataxia, hypertonia, lethargy
• Postmarketing reports: Peripheral neuropathy, stroke, symptoms consistent with fibromyalgia, sudden headache, transient Ischaemic attack^[Ref]

Ocular

• Frequency not reported: Conjunctivitis, ophthalmologic disorders, visual impairment, amblyopia, dry eyes
• Postmarketing reports: Ophthalmoplegia, visual changes^[Ref]

Oncologic

• Frequency not reported: Neoplasm, cyst, bladder carcinoma, second primary neoplasm, tumor flare^[Ref]

Second primary neoplasms include basal cell carcinoma, bladder transitional cell carcinoma, lung neoplasm, malignant melanoma, non-Hodgkin's lymphoma, and squamous cell carcinoma.^[Ref]

Other

• Very common (10% or more): Pain (up to 24%), general pain (up to 23%)
• Common (1% to 10%): Tinnitus, edema peripheral, infection
• Frequency not reported: Body odor, disturbance of smell/taste, decreased albumin, fever, decreased prostatic acid phosphatase, decreased total protein, increased BUN, increased phosphorus, increased prostatic acid phosphatase, increased total cholesterol, accidental injury, hernia, abnormal healing, prostate disorder, decreased bicarbonate, decreased HDL-cholesterol, increased glucose, fatigue, induration, increased urea nitrogen, hyperphosphatemia, increased prothrombin time (PT), increased partial thromboplastin time (PTT), decreased potassium, increased ALT, increased LDH, chills, hypothermia, pitting edema, increased calcium, increased alanine amino transferase, increased aspartate aminotransferase, increased gamma-glutamyl transferase (GGT), hard nodule in throat, hypertrophy, present antinuclear antibody, increased sedimentation rate
• Postmarketing reports: Hearing disorder^[Ref]

Psychiatric

• Very common (10% or more): Depression (up to 31%), emotional lability (up to 31%), insomnia/sleep disorder (up to 31%), decreased libido (up to 11%)
• Common (1% to 10%): Anxiety, nervousness, mood changes, increased libido, decreased libido
• Frequency not reported: Delusions, agitation
• Postmarketing reports: Altered mental status, suicidal ideation, suicide attempt, mood swings^[Ref]

Renal

• Uncommon (0.1% to 1%): Renal calculus, uric aciduria, hematuria, hemorrhagic cystitis, nocturia
• Frequency not reported: Hydronephrosis, renal failure^[Ref]

Respiratory

• Common (1% to 10%): Dyspnea, sinus congestion, chest tightness, decreased breathing sounds, hemoptysis, pleuritic chest pain, pulmonary infiltrate, rales/rhonchi, rhinitis, strep throat, wheezing/bronchitis, pulmonary edema, pulmonary embolism, respiratory disorder, cough, COPD
• Frequency not reported: Interstitial lung disease (ILD), emphysema, hemoptysis, lung edema, increased sputum, increased creatinine, epistaxis, pharyngitis, pneumonia, pleural effusion, hypoxia, hiccup, voice alteration, influenza-like illness, pleural rub
• Postmarketing reports: Shortness of breath, symptoms consistent with asthmatic process^[Ref]

Influenza-like illness include influenza, nasal congestion, nasopharyngitis, rhinorrhea, upper respiratory tract infection, and viral upper respiratory tract infection.^[Ref]

Frequently asked questions

• How long should you take Lupron for prostate cancer?
• Will I get my period while on Lupron?
• What does Lupron do for IVF?
• Are Lupron Depot and Eligard the same drug?
• Can you get pregnant on Lupron Depot?
• Does Lupron Depot need to be refrigerated?
• Is Firmagon (degarelix) the same as Lupron Depot?
• How do you inject Lupron Depot for prostate cancer?
• Is Supprelin LA the same as Lupron?

Further information

Lupron 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