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Registry Hub
Peer-Reviewed Evidence
HomeDrug RegistryCompareOXYCODONE AND ACETAMINOPHEN vs VOLTAREN ARTHRITIS PAIN
Comparative Pharmacology

OXYCODONE AND ACETAMINOPHEN vs VOLTAREN ARTHRITIS PAIN Comparison

Head-to-head clinical analysis & difference comparison: details on mechanism of action, dosing, half-life, interactions, and maternal-fetal safety.

Clinical EssentialsPharmacokineticsSpecial PopulationsSafety & MonitoringPregnancy & LactationClinical Insights
Differential Analysis

OXYCODONE AND ACETAMINOPHEN vs VOLTAREN ARTHRITIS PAIN

Clinician-reviewed, head-to-head comparison of mechanism, dosing, pharmacokinetics, and safety profiles.

View OXYCODONE AND ACETAMINOPHEN Monograph View VOLTAREN ARTHRITIS PAIN Monograph
OXYCODONE AND ACETAMINOPHEN
Opioid Agonist
Category D/X
VOLTAREN ARTHRITIS PAIN
NSAID (Topical)
Category C
TL;DR — Key Differences
  • Drug class: OXYCODONE AND ACETAMINOPHEN is a Opioid Agonist; VOLTAREN ARTHRITIS PAIN is a NSAID (Topical).
  • Half-life: OXYCODONE AND ACETAMINOPHEN has a half-life of Oxycodone: 3-5 hours (immediate-release), 4.5-8 hours (extended-release). Acetaminophen: 1.5-3 hours. Clinical context: Half-life may be prolonged in hepatic impairment, elderly, and renal failure.; VOLTAREN ARTHRITIS PAIN has Approximately 2 hours; terminal half-life may be prolonged in elderly (up to 4 hours) or hepatic impairment..
  • No direct drug-drug interaction has been documented between OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN.
  • Pregnancy: OXYCODONE AND ACETAMINOPHEN is rated Category D/X; VOLTAREN ARTHRITIS PAIN is rated Category C.

Last clinically reviewed: July 2026 · OpiCalc Medical Review Team

Clinical Essentials

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Mechanism of Action
OXYCODONE AND ACETAMINOPHEN

Oxycodone is a full mu-opioid receptor agonist, producing analgesia via activation of descending inhibitory pathways, while acetaminophen is a centrally acting analgesic and antipyretic, likely through inhibition of cyclooxygenase (COX) in the CNS and modulation of serotonergic pathways.

VOLTAREN ARTHRITIS PAIN

Non-selective cyclooxygenase (COX-1 and COX-2) inhibitor, reducing prostaglandin synthesis.

Indications
OXYCODONE AND ACETAMINOPHEN

Management of moderate to moderately severe pain (FDA approved),Off-label: acute pain, postoperative pain

VOLTAREN ARTHRITIS PAIN

Relief of pain and inflammation associated with osteoarthritis,Relief of pain and inflammation associated with rheumatoid arthritis,Relief of pain and inflammation associated with ankylosing spondylitis,Acute pain (including migraine),Dysmenorrhea

Standard Dosing
OXYCODONE AND ACETAMINOPHEN

Oral: 5-10 mg oxycodone (with 325-650 mg acetaminophen) every 4-6 hours as needed; maximum oxycodone 60 mg/day (for immediate-release) or acetaminophen 4000 mg/day. Titrate to pain control.

VOLTAREN ARTHRITIS PAIN

Oral: 50 mg twice daily or 75 mg twice daily for osteoarthritis; immediate-release: 50 mg three times daily for rheumatoid arthritis. Maximum daily dose: 150 mg.

Direct Interaction
OXYCODONE AND ACETAMINOPHEN
No Direct Interaction
VOLTAREN ARTHRITIS PAIN
No Direct Interaction

Pharmacokinetics

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Half-Life
OXYCODONE AND ACETAMINOPHEN

Oxycodone: 3-5 hours (immediate-release), 4.5-8 hours (extended-release). Acetaminophen: 1.5-3 hours. Clinical context: Half-life may be prolonged in hepatic impairment, elderly, and renal failure.

VOLTAREN ARTHRITIS PAIN

Approximately 2 hours; terminal half-life may be prolonged in elderly (up to 4 hours) or hepatic impairment.

Metabolism
OXYCODONE AND ACETAMINOPHEN

Oxycodone is extensively metabolized in the liver via CYP3A4 (primarily) and CYP2D6 (minor) to noroxycodone, oxymorphone, and other metabolites. Acetaminophen is metabolized in the liver mainly via glucuronidation and sulfation with a minor CYP2E1 pathway producing toxic NAPQI.

VOLTAREN ARTHRITIS PAIN

Hepatic metabolism via CYP2C9; also undergoes conjugation (glucuronidation) and hydroxylation.

Excretion
OXYCODONE AND ACETAMINOPHEN

Oxycodone: renal (primarily as noroxycodone, oxymorphone, and conjugated metabolites; <10% unchanged). Acetaminophen: renal (85-90% as sulfate and glucuronide conjugates; 2-4% unchanged; 8-10% as cysteine and mercapturate conjugates). Biliary/fecal excretion: minor (<5% for both).

VOLTAREN ARTHRITIS PAIN

Renal (65% as metabolites, <1% unchanged); biliary/fecal (35% as metabolites).

Protein Binding
OXYCODONE AND ACETAMINOPHEN

Oxycodone: 38-45% (primarily to albumin). Acetaminophen: 10-25% (minimal binding).

VOLTAREN ARTHRITIS PAIN

>99% bound to albumin.

VD (L/kg)
OXYCODONE AND ACETAMINOPHEN

Oxycodone: 2.6-3.0 L/kg (wide distribution into tissues). Acetaminophen: 0.9-1.0 L/kg (uniformly distributed in body fluids).

VOLTAREN ARTHRITIS PAIN

0.1–0.2 L/kg; primarily distributes to synovial fluid (concentrations up to 50% of plasma).

Bioavailability
OXYCODONE AND ACETAMINOPHEN

Oral immediate-release: oxycodone 60-87%, acetaminophen 68-88%. Oral extended-release: oxycodone 60-87% (less variable). Rectal: variable (unspecified for this combination).

VOLTAREN ARTHRITIS PAIN

Oral: 100% (immediate-release); topical: approximately 6% systemic absorption.

Special Populations

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Renal Adjustments
OXYCODONE AND ACETAMINOPHEN

Cr Cl ≥60 m L/min: no adjustment; Cr Cl 30-59 m L/min: acetaminophen no change, oxycodone consider 75% of usual dose; Cr Cl 10-29 m L/min: acetaminophen extend interval to q6h, oxycodone consider 50% of usual dose; Cr Cl <10 m L/min: acetaminophen avoid or 650 mg q8h, oxycodone 50% of usual dose; hemodialysis: acetaminophen 650 mg q8h, oxycodone 25-50% of usual dose.

VOLTAREN ARTHRITIS PAIN

GFR >30 m L/min: no adjustment. GFR 10-30 m L/min: dose reduction to 50 mg once daily or avoid use. GFR <10 m L/min: contraindicated.

Hepatic Adjustments
OXYCODONE AND ACETAMINOPHEN

Child-Pugh A: no adjustment; Child-Pugh B: oxycodone reduce dose by 50%, acetaminophen maximum 2000 mg/day; Child-Pugh C: oxycodone reduce dose by 75%, acetaminophen maximum 2000 mg/day; severe hepatic impairment: avoid acetaminophen component.

VOLTAREN ARTHRITIS PAIN

Child-Pugh A: no adjustment. Child-Pugh B: reduce dose by 50% (maximum 75 mg/day). Child-Pugh C: contraindicated.

Pediatric Dosing
OXYCODONE AND ACETAMINOPHEN

Children ≥6 months: 0.05-0.15 mg/kg oxycodone (based on oxycodone component) every 4-6 hours, maximum single dose 5 mg; acetaminophen 10-15 mg/kg/dose, maximum 75 mg/kg/day (up to 4000 mg/day). Weight-based oxycodone not to exceed adult dose.

VOLTAREN ARTHRITIS PAIN

For juvenile idiopathic arthritis: 1-2 mg/kg/day in 2-3 divided doses, maximum 3 mg/kg/day or 150 mg/day. For children <1 year: not recommended.

Geriatric Dosing
OXYCODONE AND ACETAMINOPHEN

Start at 50% of adult dose (oxycodone 2.5-5 mg every 6 hours), titrate cautiously; maximum acetaminophen 3000 mg/day due to decreased hepatic reserves; monitor for renal impairment and avoid if Cr Cl <30 m L/min.

VOLTAREN ARTHRITIS PAIN

Start at lowest effective dose (e.g., 50 mg once daily). Increase cautiously; maximum 100 mg/day. Monitor renal function and GI bleeding risk.

Safety & Monitoring

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Black Box Warnings
OXYCODONE AND ACETAMINOPHEN
FDA Black Box Warning

Risk of addiction, abuse, and misuse; life-threatening respiratory depression; neonatal opioid withdrawal syndrome; accidental ingestion may be fatal; risk of hepatotoxicity with acetaminophen overdose.

VOLTAREN ARTHRITIS PAIN
FDA Black Box Warning

Nonsteroidal anti-inflammatory drugs (NSAIDs) cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction and stroke, which can be fatal. This risk may increase with duration of use. Patients with cardiovascular disease or risk factors for cardiovascular disease may be at greater risk. NSAIDs are contraindicated for the treatment of perioperative pain in the setting of coronary artery bypass graft (CABG) surgery.

Warnings/Precautions
OXYCODONE AND ACETAMINOPHEN

Addiction, abuse, and misuse; respiratory depression; neonatal opioid withdrawal syndrome; interactions with CNS depressants; hepatotoxicity (acetaminophen); severe hypotension; adrenal insufficiency; seizures; increased risk of overdose in patients with head injury or COPD.

VOLTAREN ARTHRITIS PAIN

Cardiovascular thrombotic events; gastrointestinal bleeding, ulceration, and perforation; hypertension; congestive heart failure and edema; renal toxicity; anaphylactoid reactions; serious skin reactions; hematologic toxicity; ophthalmic effects; hepatic effects; asthma; masking of inflammation and fever.

Contraindications
OXYCODONE AND ACETAMINOPHEN

Hypersensitivity to oxycodone, acetaminophen, or any component; significant respiratory depression; acute or severe bronchial asthma; paralytic ileus; known or suspected gastrointestinal obstruction; severe hepatic impairment (acetaminophen).

VOLTAREN ARTHRITIS PAIN

History of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs; perioperative pain in the setting of coronary artery bypass graft (CABG) surgery; advanced renal disease; pregnancy (third trimester); history of gastrointestinal bleeding or perforation related to previous NSAID therapy; active peptic ulcer disease; severe heart failure; known hypersensitivity to diclofenac or any component of the product.

Adverse Reactions
OXYCODONE AND ACETAMINOPHEN
Data Pending
VOLTAREN ARTHRITIS PAIN
Data Pending
Food Interactions
OXYCODONE AND ACETAMINOPHEN

Avoid alcohol consumption; increases risk of hepatotoxicity from acetaminophen and potentiates CNS depression. Grapefruit juice may increase oxycodone absorption; avoid concurrent use. High-fat meals can delay oxycodone peak concentration, potentially reducing rapid pain relief. No specific restrictions with other foods.

VOLTAREN ARTHRITIS PAIN

No specific food interactions with topical diclofenac. However, high-fat meals may increase systemic absorption if gel is applied over large areas; advise avoiding excessive intake of fatty foods when using large doses. Alcohol may increase risk of gastrointestinal irritation if oral NSAIDs are taken concurrently; avoid excessive alcohol consumption.

Pregnancy & Lactation

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Teratogenic Risk
OXYCODONE AND ACETAMINOPHEN

First trimester: Risk of neural tube defects not significantly increased with therapeutic use; opioid dependence may increase risk of congenital malformations (e.g., gastroschisis). Second/third trimester: Chronic use may cause fetal opioid dependence, leading to neonatal abstinence syndrome (NAS). Late third trimester: Risk of respiratory depression in neonate if used near delivery.

VOLTAREN ARTHRITIS PAIN

First trimester: Risk of miscarriage and congenital malformations (cardiac, gastroschisis) increased; avoid use. Second trimester: Possible oligohydramnios and fetal renal impairment. Third trimester: High risk of premature closure of ductus arteriosus, persistent pulmonary hypertension, oligohydramnios; contraindicated after 30 weeks gestation.

Lactation Summary
OXYCODONE AND ACETAMINOPHEN

Excreted into breast milk in low concentrations. M/P ratio for oxycodone: 3.2:1; acetaminophen: approximately 1.0. Considered compatible with breastfeeding with caution; monitor infant for sedation and feeding difficulties. Avoid if maternal codeine use due to CYP2D6 ultrarapid metabolism concerns (though oxycodone less affected).

VOLTAREN ARTHRITIS PAIN

Limited excretion into breast milk (M/P ratio approximately 0.02-0.04). Considered compatible with breastfeeding due to low infant dose (<0.1% of maternal weight-adjusted dose); monitor infant for gastrointestinal effects.

Pregnancy Dosing
OXYCODONE AND ACETAMINOPHEN

No standard dose adjustment required for maternal pharmacokinetic changes. Increased renal clearance in pregnancy may slightly reduce acetaminophen levels, but therapeutic effect maintained. Oxycodone metabolism via CYP3A4 and 2D6; pregnancy-induced enzyme changes may alter clearance, but clinical significance unclear. Use lowest effective dose, avoid NSAIDs if co-prescribed.

VOLTAREN ARTHRITIS PAIN

No specific pharmacokinetic dose adjustments established; avoid or use lowest effective dose for shortest duration. Increased renal clearance in pregnancy may reduce drug levels, but risks outweigh benefits; generally not recommended.

Maternal Safety Status
OXYCODONE AND ACETAMINOPHEN
Category D/X
VOLTAREN ARTHRITIS PAIN
Category C

Clinical Insights

OXYCODONE AND ACETAMINOPHEN
VOLTAREN ARTHRITIS PAIN
Clinical Pearls
OXYCODONE AND ACETAMINOPHEN

Maximum daily acetaminophen dose is 4000 mg from all sources; prescribed combination tablets contribute to this limit. Oxycodone immediate-release duration is 3-6 hours; avoid crushing extended-release formulations. Both components have abuse potential; screen for opioid use disorder. In renal impairment, adjust dosing interval for oxycodone; avoid in Cr Cl <30 m L/min. In hepatic impairment, the acetaminophen component may be hepatotoxic; avoid in severe disease. Coadministration with serotonergic agents may precipitate serotonin syndrome. Naloxone is the reversal agent for oxycodone; acetylcysteine for acetaminophen overdose.

VOLTAREN ARTHRITIS PAIN

Voltaren Arthritis Pain (diclofenac sodium topical gel 1%) is indicated for osteoarthritis of superficial joints (e.g., hands, knees). Apply 2-4 g per affected joint four times daily. Maximum total daily dose is 32 g for upper extremities and 16 g for lower extremities. Avoid contact with eyes and mucous membranes. Use for at least 4 weeks to assess efficacy. Do not apply to open wounds or infected areas. Concurrent use of oral NSAIDs increases risk of GI and renal toxicity; consider cumulative dose. Monitor for signs of local site reactions or systemic effects, especially in elderly or those with renal impairment.

Patient Counseling
OXYCODONE AND ACETAMINOPHEN

Take exactly as prescribed; do not increase dose or frequency without consulting your doctor.,Do not take other products containing acetaminophen (e.g., Tylenol, cold medications) to avoid exceeding the maximum daily dose of 4000 mg.,Avoid alcohol while taking this medication; liver damage risk increases with alcohol use.,Do not crush, break, or chew tablets; swallow whole to avoid rapid release of oxycodone.,This medication can cause drowsiness or dizziness; avoid driving or operating machinery until you know how it affects you.,Store securely out of sight and reach of children; dispose of unused medication via a drug take-back program.,Take with food if nausea occurs; avoid high-fat meals as they may delay absorption.,Do not stop abruptly; withdrawal symptoms may occur. Consult your doctor for a tapering schedule.

VOLTAREN ARTHRITIS PAIN

Apply the gel to clean, dry skin only on the painful joint. Do not use on broken skin, cuts, or infections.,Use the enclosed dosing card to measure the correct amount: 2 to 4 grams per joint, up to four times daily.,Do not exceed 32 grams per day for hands, wrists, elbows, or 16 grams per day for knees, ankles, or feet.,Wash hands immediately after applying unless treating hands; then wait 1 hour before washing.,Allow the gel to dry for several minutes before covering the area with clothing or gloves.,Avoid applying sunscreen, cosmetics, lotions, or other topical products to the treated skin.,Do not use heat (e.g., heating pad) or bandage the treated area.,Inform your doctor if you have a history of stomach ulcers, bleeding, kidney disease, or are taking blood thinners.,Stop use and contact your doctor if you develop a rash, swelling, or worsening pain in the treated area.,Keep out of reach of children and pets. In case of accidental ingestion, seek medical attention.

Safety Verification

Known Interactions

OXYCODONE AND ACETAMINOPHEN Risks3
Phenobarbital + Oxycodone
moderate

"Phenobarbital, a potent inducer of cytochrome P450 (CYP) enzymes, particularly CYP3A4 and CYP2D6, significantly increases the hepatic metabolism of oxycodone, a prodrug that requires CYP3A4-mediated N-demethylation to noroxycodone and CYP2D6-mediated O-demethylation to oxymorphone for its analgesic effects. This induction reduces the systemic exposure and peak plasma concentration of active oxycodone and its active metabolite oxymorphone, leading to diminished analgesic efficacy and potential opioid withdrawal symptoms in patients on chronic opioid therapy. Clinically, patients may require substantially higher doses of oxycodone to achieve pain relief, increasing the risk of dose-related adverse effects if the interaction is not recognized."

Oxycodone + gamma-Hydroxybutyric acid
moderate

"The co-administration of oxycodone, a mu-opioid receptor agonist, and gamma-hydroxybutyric acid (GHB), a central nervous system depressant with activity at GABA-B and GHB receptors, results in additive or synergistic respiratory depression and CNS depression. This interaction potentiates the risk of severe hypoventilation, coma, and fatal overdose, especially in non-tolerant users or at therapeutic doses. The combined sedation also increases the likelihood of hypotension, bradycardia, and impaired psychomotor function, necessitating extreme caution."

Oxycodone + Perampanel
moderate

"The coadministration of oxycodone, a mu-opioid receptor agonist with central nervous system (CNS) depressant effects, and perampanel, a noncompetitive AMPA receptor antagonist that also causes CNS depression, produces additive sedative and respiratory depressant effects. This synergy increases the risk of excessive sedation, impaired cognitive function, and potentially life-threatening respiratory depression. Patients may experience profound somnolence, confusion, and an increased fall risk, necessitating dose adjustments or avoidance."

VOLTAREN ARTHRITIS PAIN Risks

No interactions on record

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Clinical Q&A

Frequently Asked Questions

Common clinical questions about OXYCODONE AND ACETAMINOPHEN vs VOLTAREN ARTHRITIS PAIN, answered by our medical review team.

1. What is the main difference between OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN?

OXYCODONE AND ACETAMINOPHEN is a Opioid Agonist that works by Oxycodone is a full mu-opioid receptor agonist, producing analgesia via activation of descending inhibitory pathways, while acetaminophen is a centrally acting analgesic and antipyretic, likely through inhibition of cyclooxygenase (COX) in the CNS and modulation of serotonergic pathways.. VOLTAREN ARTHRITIS PAIN is a NSAID (Topical) that works by Non-selective cyclooxygenase (COX-1 and COX-2) inhibitor, reducing prostaglandin synthesis.. They differ in pharmacokinetic profiles, FDA-approved indications, and side effect profiles.

2. Which is stronger: OXYCODONE AND ACETAMINOPHEN or VOLTAREN ARTHRITIS PAIN?

Potency comparisons between OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN depend on the specific clinical indication. These are agents from distinct pharmacological classes and are not directly interchangeable by dose. A physician or clinical pharmacist should guide any therapeutic switching decisions.

3. What is the standard dosing for OXYCODONE AND ACETAMINOPHEN vs VOLTAREN ARTHRITIS PAIN?

The standard adult dose of OXYCODONE AND ACETAMINOPHEN is: Oral: 5-10 mg oxycodone (with 325-650 mg acetaminophen) every 4-6 hours as needed; maximum oxycodone 60 mg/day (for immediate-release) or acetaminophen 4000 mg/day. Titrate to pain control.. The standard adult dose of VOLTAREN ARTHRITIS PAIN is: Oral: 50 mg twice daily or 75 mg twice daily for osteoarthritis; immediate-release: 50 mg three times daily for rheumatoid arthritis. Maximum daily dose: 150 mg.. Dosing should always be individualized based on indication, renal and hepatic function, age, and other patient factors.

4. Can you take OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN together?

No direct drug-drug interaction has been formally documented between OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN in current clinical databases. However, individual patient risk factors including other medications, organ function, and comorbidities should always be evaluated by a qualified healthcare provider.

5. Are OXYCODONE AND ACETAMINOPHEN and VOLTAREN ARTHRITIS PAIN safe during pregnancy?

The maternal-fetal safety profiles differ. OXYCODONE AND ACETAMINOPHEN is classified as Category D/X. First trimester: Risk of neural tube defects not significantly increased with therapeutic use; opioid dependence may increase risk of congenital malformations (e.g., gastroschisis). VOLTAREN ARTHRITIS PAIN is classified as Category C. First trimester: Risk of miscarriage and congenital malformations (cardiac, gastroschisis) increased; avoid use. Second trimester: Possible oligohydramnios and fetal renal impairme. Always consult a maternal-fetal medicine specialist before taking either drug during pregnancy or lactation.