Iroko Pharmaceuticals Announces Key Patent Grant for ZORVOLEX™

PHILADELPHIA, MARCH 25, 2014 — Iroko Pharmaceuticals, LLC, a global specialty pharmaceutical company dedicated to advancing the science of analgesia, announced today that the first patent has been issued by the United States Patent and Trademark Office for the composition of matter and formulation of ZORVOLEX™ (diclofenac) capsules. ZORVOLEX was approved in October 2013 by the U.S. Food and Drug Administration (FDA) for the treatment of mild to moderate acute pain in adults.

“This first ZORVOLEX patent is significant as it provides additional exclusivity protection to the commercial prospects of our first FDA-approved product, which represents a new approach to pain management,” said John Vavricka, President and CEO of Iroko. “Specifically, this patent covers our ZORVOLEX product made using the SoluMatrix Fine Particle Technology™ licensed to Iroko by iCeutica Inc. for exclusive use in nonsteroidal anti-inflammatory drugs (NSAIDs), the same technology that forms the foundation of our deep NSAID pipeline.”

The term of the issued patent expires no earlier than 2030. In addition, ZORVOLEX has three years of regulatory exclusivity through FDA’s regulatory pathway. The patent will be listed in FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations publication, or Orange Book, which includes all FDA-approved drugs, as well as patents and exclusivity information associated with those drugs. ZORVOLEX does not have any therapeutic equivalents and thus is not interchangeable with other formulations of oral diclofenac, even if the milligram strength is the same.

“The issuance of this patent is yet another important milestone for Iroko and adds to our growing list of accomplishments in the last six months. We remain steadfast in our commitment to providing new options for pain relief to patients and physicians,” said Osagie Imasogie, Executive Chairman of the Board, Iroko Pharmaceuticals. “Furthermore, we and our licensor, iCeutica, continue to prosecute additional patent applications for ZORVOLEX in the US and internationally.”



ZORVOLEX is the first low dose FDA-approved NSAID developed using proprietary SoluMatrix Fine Particle Technology™. ZORVOLEX contains diclofenac as submicron particles that are approximately 20 times smaller than their original size. The reduction in particle size provides an increased surface area, leading to faster dissolution. ZORVOLEX was developed to align with recommendations from FDA and other professional medical organizations that NSAIDs be used at the lowest effective dose for the shortest possible duration consistent with individual patient treatment goals. For more information, visit


ZORVOLEX is indicated for the treatment of mild to moderate acute pain in adults.

Important Safety Information about ZORVOLEX

Cardiovascular Risk

Nonsteroidal anti-inflammatory drugs (NSAIDs) may cause an increased risk of serious cardiovascular thrombotic events, 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.

ZORVOLEX is contraindicated for the treatment of perioperative pain in the setting of coronary artery bypass graft (CABG) surgery.

Gastrointestinal Risk

NSAIDs cause an increased risk of serious gastrointestinal adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal.  These events can occur at any time during use and without warning symptoms.  Elderly patients are at greater risk for serious gastrointestinal events.

ZORVOLEX is contraindicated in patients with:  a known hypersensitivity to diclofenac or its inactive ingredients; a history of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs.

ZORVOLEX should be used at the lowest effective dose for the shortest duration consistent with individual patient treatment goals.

Elevation of one or more liver tests may occur during therapy with ZORVOLEX.  Physicians should measure transaminases (ALT and AST) periodically in patients receiving long-term therapy with ZORVOLEX. ZORVOLEX should be discontinued immediately if abnormal liver tests persist or worsen.

NSAIDS, including ZORVOLEX, can lead to the new onset or worsening of existing hypertension which may contribute to the increased incidence of cardiovascular events.  Blood pressure should be monitored closely during treatment with ZORVOLEX.  NSAIDs may diminish the antihypertensive activity of thiazides, loop diuretics, ACE inhibitors and angiotensin II antagonists.

Fluid retention and edema have been observed in some patients taking NSAIDs.  ZORVOLEX should be used with caution in patients with fluid retention or heart failure.

Long-term administration of NSAIDs can result in renal papillary necrosis and other renal injury.  ZORVOLEX should be used with caution in patients at greatest risk of this reaction, including the elderly, those with impaired renal function, heart failure, liver dysfunction, and those taking diuretics and ACE inhibitors.

Treatment with ZORVOLEX in patients with advanced renal disease is not recommended.

Anaphylactoid reactions may occur in patients with the aspirin triad or in patients without prior exposure to ZORVOLEX and should be discontinued immediately if an anaphylactoid reaction occurs.

NSAIDs can cause serious skin adverse events such as exfoliative dermatitis, Stevens – Johnson Syndrome (SJS), and toxic epidermal necrolysis (TEN), which can be fatal.  ZORVOLEX should be discontinued if rash or other signs of local skin reaction occur.

Starting at 30 weeks gestation, ZORVOLEX and other NSAIDs should be avoided by pregnant women as premature closure of the ductus arteriosus in the fetus may occur.

Concomitant administration of diclofenac and aspirin or anticoagulants is not generally recommended because of the risk of increased GI bleeding higher than users of either drug alone.

Most common adverse reactions in clinical trials (incidence ≥2%) include: edema, nausea, headache, dizziness, vomiting, constipation, pruritus, flatulence, pain in extremity, and dyspepsia.

ZORVOLEX capsules do not result in an equivalent systemic exposure to diclofenac as other oral formulations.  Therefore, do not substitute similar dosing strengths of other diclofenac products for ZORVOLEX.

Please see full Prescribing Informationfor additional important safety and dosing information.


About Iroko Pharmaceuticals, LLC

Iroko is a global specialty pharmaceutical company, based in Philadelphia, dedicated to advancing the science of analgesia. The company develops and globally commercializes pharmaceutical products. In addition to the Iroko products that are marketed worldwide, the company has a robust pipeline of investigational low dose NSAID products being developed using iCeutica Inc.’s proprietary SoluMatrix Fine Particle Technology™. For more information, visit



Jessica Donnelly for Iroko Pharmaceuticals, LLC, 212-798-9819

Kate de Santis, Iroko Pharmaceuticals, LLC, 267-546-1682


SoluMatrix Fine Particle Technology™ is a trademark of iCeutica Inc., and is licensed to Iroko for use in NSAIDs.

ZORVOLEX is a trademark of Iroko Pharmaceuticals, LLC.