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Zorvolex Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 11/21/2016

Zorvolex (diclofenac) is a nonsteroidal anti-inflammatory drug (NSAID) used to treat mild to moderate acute pain in adults. Common side effects of Zorvolex include:

For treatment of mild to moderate acute pain, the dosage of Zorvolex is 18 mg or 35 mg three times daily. Zorvolex may interact with aspirin, anticoagulants, ACE inhibitors, diuretics, lithium, methotrexate, or cyclosporine. Tell your doctor all medications and supplements you use. During pregnancy, Zorvolex should be used only if prescribed prior to 30 weeks. Starting at 30 weeks Zorvolex is not recommended for use as it may harm a fetus. This drug may pass into breast milk. Consult your doctor before breastfeeding.

Our Zorvolex (diclofenac) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Zorvolex FDA Prescribing Information: Side Effects
(Adverse Reactions)


The following adverse reactions are discussed in greater detail in other sections of the labeling:

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.

Adverse Reactions In Patients With Acute Pain

Two-hundred sixteen (216) patients received ZORVOLEX in the completed, 48-hour, double-blind, placebo-controlled, clinical trial of acute pain following bunionectomy. The most frequent adverse reactions in this study are summarized in Table 1.

Table 1 : Summary of Adverse Reactions ( ≥ 2% in ZORVOLEX 18 mg or 35 mg group) - Phase 3 Study in Patients With Postsurgical Pain

Adverse Reactions ZORVOLEX 18 mg or 35 mg three times daily*
N = 216
N = 106
Edema 33% 32%
Nausea 27% 37%
Headache 13% 15%
Dizziness 10% 16%
Vomiting 9% 12%
Constipation 8% 4%
Pruritus 7% 6%
Flatulence 3% 2%
Pain in Extremity 3% 1%
Dyspepsia 2% 1%
*One tablet of hydrocodone/acetaminophen 10 mg/325 mg was permitted every 4 to 6 hours as rescue medication for pain management. There was a greater use of concomitant opioid rescue medication in placebo-treated patients than in ZORVOLEX-treated patients. About 82% of patients in the ZORVOLEX 35 mg group, 85% of the patients in the ZORVOLEX 18 mg group, and 97% of patients in the placebo group took rescue medication for pain management during the study.
Adverse Reactions In Patients With Osteoarthritis Pain

Two-hundred two (202) patients received ZORVOLEX in the completed, 12-week, doubleblind, placebo-controlled, clinical trial of osteoarthritis pain of the knee or hip. The most frequent adverse reactions in this study are summarized in Table 2.

Table 2 : Summary of Adverse Reactions ( ≥ 2%) - 12-week Phase 3 Study in Patients With Osteoarthritis Pain*

Adverse Reactions ZORVOLEX 35 mg
Nausea 7% 2%
Diarrhea 6% 3%
Headache 4% 3%
Abdominal Pain Upper 3% 1%
Sinusitis 3% 1%
Vomiting 3% 1%
Alanine Aminotransferase Increased 2% 0
Blood Creatinine Increased 2% 0
Dyspepsia 2% 1%
Flatulence 2% 0
Hypertension 2% 1%
* Adverse reactions that occurred in ≥ 2% of patients treated with ZORVOLEX and occurred more frequently than in patients treated with placebo

Six-hundred one (601) patients received ZORVOLEX 35 mg either twice or three times daily in a 52-week, open-label, clinical trial in osteoarthritis pain of the knee or hip. Of those, 360 (60%) patients completed the trial. The most frequent adverse reactions in this study are summarized in Table 3.

Table 3 : Summary of Adverse Reactions ( ≥ 2%) - 52-week Open-label Study in Patients with Osteoarthritis Pain

Adverse Reactions ZORVOLEX 35 mg
Upper respiratory tract infection 8%
Headache 8%
Urinary tract infection 7%
Diarrhea 6%
Nasopharyngitis 6%
Nausea 6%
Constipation 5%
Sinusitis 5%
Osteoarthritis 5%
Cough 4%
Alanine aminotransferase increased 4%
Back pain 3%
Dyspepsia 3%
Procedural pain 3%
Bronchitis 3%
Hypertension 3%
Abdominal pain upper 3%
Influenza 3%
Arthralgia 3%
Contusion 3%
Vomiting 3%
Abdominal discomfort 2%
Aspartate aminotransferase increased 2%
Dizziness 2%
Fall 2%
Abdominal pain 2%

Adverse reactions reported for diclofenac and other NSAIDs:

In patients taking other NSAIDs, the most frequently reported adverse reactions occurring in approximately 1%-10% of patients are:

Gastrointestinal experiences including: abdominal pain, constipation, diarrhea, dyspepsia, flatulence, gross bleeding/perforation, heartburn, nausea, GI ulcers (gastric/duodenal) and vomiting.

Abnormal renal function, anemia, dizziness, edema, elevated liver enzymes, headaches, increased bleeding time, pruritus, rashes and tinnitus.

Additional adverse reactions reported occasionally include:

Body as a Whole: fever, infection, sepsis

Cardiovascular System: congestive heart failure, hypertension, tachycardia, syncope

Digestive System: dry mouth, esophagitis, gastric/peptic ulcers, gastritis, gastrointestinal bleeding, glossitis, hematemesis, hepatitis, jaundice

Hemic and Lymphatic System: ecchymosis, eosinophilia, leukopenia, melena, purpura, rectal bleeding, stomatitis, thrombocytopenia

Metabolic and Nutritional: weight changes

Nervous System: anxiety, asthenia, confusion, depression, dream abnormalities, drowsiness, insomnia, malaise, nervousness, paresthesia, somnolence, tremors, vertigo

Respiratory System: asthma, dyspnea

Skin and Appendages: alopecia, photosensitivity, sweating increased

Special Senses: blurred vision

Urogenital System: cystitis, dysuria, hematuria, interstitial nephritis, oliguria/polyuria, proteinuria, renal failure

Other adverse reactions, which occur rarely are:

Body as a Whole: anaphylactic reactions, appetite changes, death

Cardiovascular System: arrhythmia, hypotension, myocardial infarction, palpitations, vasculitis

Digestive System: colitis, eructation, fulminant hepatitis with and without jaundice, liver failure, liver necrosis, pancreatitis

Hemic and Lymphatic System: agranulocytosis, hemolytic anemia, aplastic anemia, lymphadenopathy, pancytopenia

Metabolic and Nutritional: hyperglycemia

Nervous System: convulsions, coma, hallucinations, meningitis

Respiratory System: respiratory depression, pneumonia

Skin and Appendages: angioedema, toxic epidermal necrolysis, erythema multiforme, exfoliative dermatitis, Stevens-Johnson syndrome, urticaria

Special Senses: conjunctivitis, hearing impairment

Read the entire FDA prescribing information for Zorvolex (Diclofenac Capsules)

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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