LEFLUNICLO

LEFLUNICLO DESCRIPTION LEFFLUNICLO is supplied as 2 components in a kit: 1 BOTTLE OF LEFLUNOMIDE TABLETS USP; 20MG (30 TABLETS) White to off-white, round film coated tablet, debossed with "L" on one side and "A5" on the other side. 1 TUBE OF DICLOFENAC SODIUM (NSAID*) 1% (equivalent to 0.93% diclofenac), 100 g TUBE. 11 DESCRIPTION Leflunomide USP is a pyrimidine synthesis inhibitor. The chemical name for leflunomide is N-(4´-trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide. It has an empirical formula C 12 H 9 F 3 N 2 O 2 , a molecular weight of 270.2 and the following structural formula: Leflunomide USP is available for oral administration as film coated tablets containing 10, 20 mg of active drug. Combined with leflunomide are the following inactive ingredients: colloidal silicon dioxide, crospovidone, hypromellose, lactose monohydrate, magnesium stearate, corn starch, HPMC 2910/Hypromellose USP (6 mPas), Titanium Dioxide USP, Macrogol/PEG 6000 NF, Talc USP and Iron Oxide Yellow NF (20 mg tablet only). Image

INDICATION AND USAGE For the treatment of adults with active rheumatoid arthritis (RA). For the temporary relief of arthritis pain. 1 INDICATIONS AND USAGE Leflunomide tablets USP are indicated for the treatment of adults with active rheumatoid arthritis (RA). Uses • for the temporary relief of arthritis pain ONLY in the following areas: • hand, wrist, elbow (upper body areas) • foot, ankle, knee (lower body areas) • this product may take up to 7 days to work for arthritis pain; it is not for immediate relief. If no pain relief in 7 days, stop use.

SEE PRESCRIBING DIRECTIONS FOR EACH COMPONENT CONTAINED IN THIS KIT Take one leflunimide 20 mg once daily. The maximum recommended daily dosage is 20 mg once per day. Apply 2-4 grams of diclofenac 1% gel to treated area as needed up to 4 times per day. Do not usea on more than 2 body areas at the same time. "These highlights do not include all the information needed to use" "see full prescribing information for" and "Initial U.S. Approval" Loading dosage for patients at low risk for leflunomide tablets -associated hepatotoxicity and leflunomide tablets-associated myelosuppression: 100 mg daily for 3 days (2.1) Maintenance dosage: 20 mg daily. (2.1) Maximum recommended daily dosage: 20 mg once daily. (2.1) If 20 mg once daily is not tolerated, may decrease dosage to 10 mg once daily. (2.1) Screen patients for active and latent tuberculosis, pregnancy test (females), blood pressure, and laboratory tests before starting leflunomide tablets. (2.2) 2.1 Recommended Dosage The recommended dosage of leflunomide tablets USP is 20 mg once daily. Treatment may be initiated with or without a loading dose, depending upon the patient's risk of leflunomide tablets USP -associated hepatotoxicity and leflunomide tablets -associated myelosuppression. The loading dosage provides steady-state concentrations more rapidly. For patients who are at low risk for leflunomide tablets -associated hepatotoxicity and leflunomide tablets USP - associated myelosuppression the recommended leflunomide tablets USP loading dosage is 100 mg once daily for 3 days. Subsequently administer 20 mg once daily. For patients at high risk for leflunomide tablets USP -associated hepatotoxicity (e.g., those taking concomitant methotrexate) or leflunomide tablets -associated myelosuppression (e.g., patients taking concomitant immunosuppressants), the recommended leflunomide tablets USP dosage is 20 mg once daily without a loading dose [see Warnings and Precautions (5.2,5.4)]. The maximum recommended daily dosage is 20 mg once per day. Consider dosage reduction to 10 mg once daily for patients who are not able to tolerate 20 mg daily (i.e., for patients who experience any adverse events listed in Table 1). Monitor patients carefully after dosage reduction and after stopping therapy with leflunomide tablets, since the active metabolite of leflunomide, teriflunomide, is slowly eliminated from the plasma [see Clinical Pharmacology (12.3)]. After stopping leflunomide tablets treatment, an accelerated drug elimination procedure is recommended to reduce the plasma concentrations of the active metabolite, teriflunomide [see Warnings and Precautions (5.3)]. Without use of an accelerated drug elimination procedure, it may take up to 2 years to reach undetectable plasma teriflunomide concentrations after stopping leflunomide tablets [see Clinical Pharmacology (12.3)]. 2.2 Evaluation and Testing Prior to Starting leflunomide tablets USP Prior to starting leflunomide tablets treatment the following evaluations and tests are recommended: Directions Use up to 21 days unless directed by your doctor Not for strains, sprains, bruises or sports injuries. This product has not been shown to work for these types of injuries. Daily Per Dose For your arthritis pain: • Use 4 times per day every day • Do not use on more than 2 body areas at the same time Use ENCLOSED DOSING CARD to measure a dose • For each upper body area (hand, wrist, or elbow) – Squeeze out 2.25 inches (2 grams) • For each lower body area (foot, ankle or knee) –Squeeze out 4.5 inches (4 grams) Read the enclosed User Guide for complete instructions: • use only as directed • do not use more than directed or for longer than directed • apply only to clean, dry skin that does not have any cuts, open wounds, infections or rashes • do not apply in same area as any other product • do not apply with external heat such as heating pad • do not apply a bandage over the treated area • store ENCLOSED DOSING CARD with your Diclofenac Sodium Topical Gel, 1% product. The dosing card is re-usable.

CONTRADICTIONS Do not use if known hypersensitivity to any of the listed ingredients of any of the components included on the kit. 4 CONTRAINDICATIONS Leflunomide tablet is contraindicated in: Pregnant women. Leflunomide tablets may cause fetal harm. If a woman becomes pregnant while taking this drug, stop leflunomide tablets, apprise the patient of the potential hazard to the fetus, and begin a drug elimination procedure [see Warnings and Precautions (5.1 and 5.3) and Use in Specific Populations (8.1)]. Patients with severe hepatic impairment [see Warnings and Precautions (5.2)]. Patients with known hypersensitivity to leflunomide or any of the other components of leflunomide tablets. Known reactions include anaphylaxis [see Adverse Reactions (6.1)]. Patients being treated with teriflunomide [see Drug Interactions (7)]. Pregnancy. (4, 5.1,8.1) Severe hepatic impairment. (4,5.2) Hypersensitivity to leflunomide tablets or any of its inactive components. (4) Current teriflunomide treatment. (4)

The following serious adverse reactions are described elsewhere in the labeling: Hepatotoxicity [see Warnings and Precautions (5.2)] Immunosuppression [see Warnings and Precautions (5.4)] Bone marrow suppression [see Warnings and Precautions (5.4)] Stevens-Johnson syndrome and toxic epidermal necrolysis [see Warnings and Precautions (5.5)] Peripheral neuropathy [see Warnings and Precautions (5.7 )] Interstitial lung disease [see Warnings and Precautions (5.8)] The most commonly reported adverse reactions (≥10%) regardless of relation to leflunomide tablets treatment were diarrhea, respiratory infection, nausea, headache, rash, abnormal liver enzymes, dyspepsia. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Lupin Pharmaceutical Inc. at 1-800-399-2561 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trials Experience Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice. In clinical studies (Trials 1, 2, and 3), 1,865 patients were treated with leflunomide tablets administered as either monotherapy or in combination with methotrexate or sulfasalazine. Patients ranged in age from 19 to 85 years, with an overall median age of 58 years. The mean duration of RA was 6 years ranging from 0 to 45 years. Elevation of Liver Enzymes Treatment with leflunomide tablets was associated with elevations of liver enzymes, primarily ALT and AST, in a significant number of patients; these effects were generally reversible. Most transaminase elevations were mild (≤ 2-fold ULN) and usually resolved while continuing treatment. Marked elevations (>3-fold ULN) occurred infrequently and reversed with dose reduction or discontinuation of treatment. Table 1 shows liver enzyme elevations seen with monthly monitoring in clinical trials Trial 1 and Trial 2. It was notable that the absence of folate use in Trial 3 was associated with a considerably greater incidence of liver enzyme elevation on methotrexate. In a 6 month study of 263 patients with persistent active rheumatoid arthritis despite methotrexate therapy, and with normal LFTs, leflunomide tablets was administered to a group of 130 patients starting at 10 mg per day and increased to 20 mg as needed. An increase in ALT greater than or equal to three times the ULN was observed in 3.8% of patients compared to 0.8% in 133 patients continued on methotrexate with placebo. Most Common Adverse Reactions The most common adverse reactions in leflunomide tablets -treated patients with RA include diarrhea, elevated liver enzymes (ALT and AST), alopecia and rash. Table 2 displays the most common adverse reactions in the controlled studies in patients with RA at one year (≥ 5% in any leflunomide tablets treatment group). Adverse events during a second year of treatment with leflunomide tablets in clinical trials were consistent with those observed during the first year of treatment and occurred at a similar or lower incidence. Less Common Adverse Reactions In addition, in controlled clinical trials, the following adverse events in the leflunomide tablets treatment group occurred at a higher incidence than in the placebo group. These adverse events were deemed possibly related to the study drug. Blood and Lymphatic System: leukocytosis, thrombocytopenia; Cardiovascular: chest pain, palpitation, thrombophlebitis of the leg, varicose vein; Eye: blurred vision, eye disorder, papilledema, retinal disorder, retinal hemorrhage; Gastrointestinal: alkaline phosphatase increased, anorexia, bilirubinemia, flatulence, gamma-GT increased, salivary gland enlarged, sore throat, vomiting, dry mouth; General Disorders: malaise; Immune System: anaphylactic reaction; Infection: abscess, flu syndrome, vaginal moniliasis; Nervous System: dizziness, headache, somnolence; Respiratory System: dyspnea;

Following oral administration, leflunomide is metabolized to an active metabolite, teriflunomide, which is responsible for essentially all of leflunomide's in vivo activity. Drug interaction studies have been conducted with both leflunomide and with its active metabolite, teriflunomide, where the metabolite was directly administered to the test subjects. Effect of potent CYP and transporter inducers Leflunomide is metabolized by CYP450 metabolizing enzymes. Concomitant use of leflunomide tablets and rifampin, a potent inducer of CYP and transporters, increased the plasma concentration of teriflunomide by 40%. However, when co-administered with the metabolite, teriflunomide, rifampin did not affect its pharmacokinetics. No dosage adjustment is recommended for leflunomide tablets when coadministered with rifampin. Because of the potential for leflunomide tablets concentrations to continue to increase with multiple dosing, caution should be used if patients are to be receiving both leflunomide tablets and rifampin [see Clinical Pharmacology (12.3)]. Effect on CYP2C8 substrates Teriflunomide is an inhibitor of CYP2C8 in vivo. In patients taking leflunomide tablets, exposure of drugs metabolized by CYP2C8 (e.g., paclitaxel, pioglitazone, repaglinide, rosiglitazone) may be increased. Monitor these patients and adjust the dose of the concomitant drug(s) metabolized by CYP2C8 as required [see Clinical Pharmacology (12.3)]. Effect on warfarin Coadministration of leflunomide tablets with warfarin requires close monitoring of the international normalized ratio (INR) because teriflunomide, the active metabolite of leflunomide tablets, may decrease peak INR by approximately 25%. Effect on oral contraceptives Teriflunomide may increase the systemic exposures of ethinylestradiol and levonorgestrel. Consideration should be given to the type or dose of contraceptives used in combination with leflunomide tablets [see Clinical Pharmacology (12.3)]. Effect on CYP1A2 substrates Teriflunomide, the active metabolite of leflunomide tablets, may be a weak inducer of CYP1A2 in vivo. In patients taking leflunomide tablets, exposure of drugs metabolized by CYP1A2 (e.g., alosetron, duloxetine, theophylline, tizanidine) may be reduced. Monitor these patients and adjust the dose of the concomitant drug(s) metabolized by CYP1A2 as required [see Clinical Pharmacology (12.3)]. Effect on organic anion transporter 3 (OAT3) substrates Teriflunomide inhibits the activity of OAT3 in vivo. In patients taking leflunomide tablets, exposure of drugs which are OAT3 substrates (e.g., cefaclor, cimetidine, ciprofloxacin, penicillin G, ketoprofen, furosemide, methotrexate, zidovudine) may be increased. Monitor these patients and adjust the dose of the concomitant drug(s) which are OAT3 substrates as required [see Clinical Pharmacology (12.3)]. Effect on BCRP and organic anion transporting polypeptide B1 and B3 (OATP1B1/1B3) substrates Teriflunomide inhibits the activity of BCRP and OATP1B1/1B3 in vivo. For a patient taking leflunomide tablets, the dose of rosuvastatin should not exceed 10 mg once daily. For other substrates of BCRP (e.g., mitoxantrone) and drugs in the OATP family (e.g., methotrexate, rifampin), especially HMG- Co reductase inhibitors (e.g., atorvastatin, nateglinide, pravastatin, repaglinide, and simvastatin), consider reducing the dose of these drugs and monitor patients closely for signs and symptoms of increased exposures to the drugs while patients are taking leflunomide tablets [see Clinical Pharmacology (12.3)]. Drugs metabolized by CYP2C8 and OAT3 transporters: Monitor patients because teriflunomide may increase exposure of these drugs. (7) Teriflunomide may increase exposure of ethinylestradiol and levonorgestrel. Choose an appropriate oral contraceptive. (7) Drugs metabolized by CYP1A2: Monitor patients because teriflunomide may decrease exposure of these drugs. (7) Warfarin: Monitor INR as teriflunomide may decrease INR. (7) Drugs metabolized by BCRP and OATP1B1/B3 transporters: Monitor patients because teriflunomide may increase exposure of these drugs. (7) Rosuvastatin: The dose of rosuvastatin should not exceed 10 mg once daily in patients taking leflunomide tablets. (7)

Purpose Arthritis pain reliever

Do not use • if you have ever had an allergic reaction to any other pain reliever or to a fever reducer • for strains, sprains, bruises or sports injuries. This product has not been shown to work for these types of injuries. • right before or after heart surgery • on more than 2 body areas at the same time • in the eyes, nose or mouth

When using this product • avoid contact with eyes, nose, or mouth • if eye contact occurs, rinse thoroughly with water

Stop use and ask a doctor if • pain gets worse or lasts more than 21 days • redness or swelling is present in the painful area • fever occurs • skin irritation occurs • any new symptoms appear. These could be signs of a serious condition. • you experience any of the following signs of stomach bleeding: • feel faint • have bloody or black stools • vomit blood • have stomach pain that does not get better • you have symptoms of heart problems or stroke: • chest pain • trouble breathing • leg swelling • weakness in one part or side of body • slurred speech

Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away (1-800-222-1222).

Store at 20°-25°C (68° to 77°F); Keep away from heat and flame. Protect from freezing. [See USP Controlled Room Temperature.] Protect from light. Other information • store at 20-25°C (68-77°F). Keep from freezing. • read all product information before using. Keep the dosing card, this carton and accompanying User Guide for important information.

Questions or comments? 1-800-719-9260