Galliprant tablets for dogs Species: Dogs Therapeutic indication: Pharmaceuticals: Neurological preparations: Analgesics, Pharmaceuticals: Anti-inflammatory preparations: Oral: Other NSAIDs, Pharmaceuticals: Locomotor (including navicular and osteoarthritis) Active ingredient: Grapiprant Product:Galliprant tablets for dogs Product index: Galliprant tablets for dogs Qualitative and quantitative composition Each tablet contains: Active substance: Grapiprant 20 mg Grapiprant 60 mg Grapiprant 100 mg For the full list of excipients, see section Pharmaceutical Particulars Pharmaceutical form 20 mg tablet: A brown speckled, biconvex oval tablet with a score on one face separating the debossed number ‘20’ on one half and the letters ‘MG’ on the other half; the letter ‘G’ is debossed on the other face. The tablet can be divided into equal halves. 60 mg tablet: A brown speckled, biconvex oval tablet with a score on one face separating the debossed number ‘60’ on one half and the letters ‘MG’ on the other half; the letter ‘G’ is debossed on the other face. The tablet can be divided into equal halves. 100 mg tablet: A brown speckled, biconvex oval tablet with the debossed number ‘100’ on one half and the letters ‘MG’ on the other half; the letter ‘G’ is debossed on the other face. Clinical particulars Target species Dogs. Indications for use, specifying the target species For the treatment of pain associated with mild to moderate osteoarthritis in dogs. Contraindications Do not use in case of hypersensitivity to the active substance or any of the excipients. Do not use in pregnant, lactating or breeding animals, see section below. Special warnings for each target species The majority of clinical cases assessed in the clinical field studies suffered from mild to moderate osteoarthritis based on the veterinary assessment. To achieve a substantiated response to treatment, use the veterinary medicinal product only in mild and moderate cases of osteoarthritis. From the two clinical field studies, the overall success rates based on CBPI (Canine Brief Pain Inventory, as completed by the owner) at 28 days after the start of the treatment, were 51.3% (120/235) for Galliprant and 35.5% (82/231) for the placebo group. This difference in favour of Galliprant was statistically significant (p-value= 0.0008). A clinical response to treatment is usually seen within 7 days. If no clinical improvement is apparent after 14 days, treatment with Galliprant should be iscontinued and different treatment options should be explored in consultation with the veterinarian. Special precautions for use Special precautions for use in animals Grapiprant is a methylbenzenesulfonamide. It is not known whether dogs with a history of hypersensitivity to sulphonamides will exhibit hypersensitivity to grapiprant. If signs of sulphonamide hypersensitivity occur, treatment should be discontinued. Mild decreases in serum albumin and total protein, most often within the reference range, have been observed in dogs treated with grapiprant but were not associated with any clinically significant observations or events. Use with caution in dogs suffering from pre-existing liver, cardiovascular or renal dysfunctions or from gastrointestinal disease. The concurrent use of grapiprant with other anti-inflammatory agents has not been studied and should be avoided. The safety of the veterinary medicinal product has not been established in dogs under 9 months of age and in dogs weighing less than 3.6 kg. Special precautions to be taken by the person administering the veterinary medicinal product to animals Wash hands after handling of the veterinary medicinal product. In case of accidental ingestion by children, mild and reversible gastrointestinal signs and nausea may be observed. In case of accidental ingestion, seek medical advice immediately and show the package leaflet or the label to the physician. Adverse reactions (frequency and seriousness) Vomiting was observed very commonly in clinical studies. Soft-formed faeces, diarrhoea and inappetence were commonly observed in clinical studies. These signs were generally transient. Elevated liver enzymes, elevated BUN, elevated creatinine, haematemesis and haemorrhagic diarrhoea have been reported very rarely following use post authorisation. The frequency of adverse reactions is defined using the following convention: - very common (more than 1 in 10 animals treated displaying adverse reactions during the course of one treatment) - common (more than 1 but less than 10 animals in 100 animals treated) - uncommon (more than 1 but less than 10 animals in 1,000 animals treated) - rare (more than 1 but less than 10 animals in 10,000 animals treated) - very rare (less than 1 animal in 10,000 animals treated, including isolated reports). Use during pregnancy, lactation or lay Do not use in pregnant, lactating or breeding animals as the safety of grapiprant has not been established during pregnancy and lactation or in dogs used for breeding. Interaction with other medicinal products and other forms of interaction Prior treatment with other anti-inflammatory substances may result in additional or increased severity of adverse effects and accordingly a treatment-free period with such veterinary medicinal products should be observed before the commencement of treatment with this veterinary medicinal product. The treatment-free period should take into account the pharmacokinetic properties of the products used previously. The concomitant use of protein-bound veterinary medicinal products with grapiprant has not been studied. Commonly used protein-bound veterinary medicinal products include cardiac, anticonvulsant and behavioural medications. Drug compatibility should be monitored in animals requiring adjunctive therapy. Amounts to be administered and administration route For oral use. Administer this veterinary medicinal product on an empty stomach (e.g. in the morning) and at least one hour before the next meal, once daily at a target dose of 2 mg per kg body weight. Duration of treatment will depend on the response observed to treatment. As field studies were limited to 28 days, longer-term treatment should be considered carefully and regular monitoring undertaken by the veterinarian. Since clinical signs of canine osteoarthritis wax-and-wane, intermittent treatment may be beneficial in some dogs. The following number of tablets should be given once daily: Body weight (kg) 20 mg tablet 60 mg tablet 100 mg tablet Dose range (mg/kg bw) 3.6 - 6.8 0.5 1.5 - 2.7 6.9 - 13.6 1 1.5 - 2.9 13.7 - 20.4 0.5 1.5 - 2.2 20.5 - 34.0 1 1.8 - 2.9 34.1 - 68.0 1 1.5 - 2.9 68.1 - 100.0 2 2.0 - 2.9 Overdose (symptoms, emergency procedures, antidotes), if necessary In healthy dogs treated with grapiprant for 9 consecutive months, mild and transient soft-formed or mucous faeces, occasionally bloody, and vomiting were observed at daily overdoses of approximately 2.5x and 15x the recommended dose. Grapiprant did not produce any signs of kidney or liver toxicity at daily overdoses of up to 15x the recommended dose. In case of overdose, symptomatic treatment should be initiated. Withdrawal period(s) Not applicable. Pharmacological particulars Pharmacotherapeutic group: Other anti-inflammatory and antirheumatic agents, non-steroids ATCvet code: QM01AX92 Pharmacodynamic properties Grapiprant is a non-steroidal, non-cyclooxygenase inhibiting anti-inflammatory drug in the piprant class. Grapiprant is a selective antagonist of the EP4 receptor, a key prostaglandin E2 receptor that predominantly mediates prostaglandin E2‐elicited nociception. The specific effects of the binding of prostaglandin E2 to the EP4 receptor include vasodilation, increased vascular permeability, angiogenesis and production of pro‐inflammatory mediators. The EP4 receptor is important in mediating pain and inflammation as it is the primary mediator of the prostaglandin E2-elicited sensitization of sensory neurons and prostaglandin E2-elicited inflammation. Pharmacokinetic particulars Absorption Grapiprant is readily and rapidly absorbed from the gastrointestinal tract in dogs. After a single oral dose of 2 mg grapiprant/kg, Cmax and AUC values of 1.21 μg/ml and 2.71 μg.h/ml were reached in the fasted state. Maximum grapiprant concentrations are observed in serum within one hour of dosing in the fasted state. Intake of the tablet with food reduces the oral bioavailability, i.e. the oral bioavailability of grapiprant when taken in the fasted state was 89% and when taken with food it was 33%, with mean Cmax and AUC grapiprant values reduced 4-fold and 2-fold, respectively. Grapiprant does not accumulate in the dog after repeated administration. No gender related differences in absorption are observed. Distribution In vitro protein binding of grapiprant indicates that grapiprant is primarily bound to dog serum albumin. The mean percentage of unbound grapiprant was 4.35% and 5.01% at a grapiprant concentration of 200 ng/ml and 1000 ng/ml. Biotransformation Grapiprant is primarily bound to serum proteins. In dogs, grapiprant is a major excretion product in bile, faeces and urine. Four metabolites are identified and the metabolic pathways include N-deamination to form the major metabolite in faeces (7.2%) and urine (3.4%). Two hydroxylated metabolites and one N-oxidated metabolite are also recovered in bile, faeces and/or urine. The pharmacological activity of the metabolites is not known. Elimination Grapiprant is primarily excreted via faeces. Approximately 70-80% of the administered dose is excreted within 48-72 h with the majority of the dose excreted unchanged. Faecal excretion accounted for roughly 65% of the dose whereas approximately 20% of the dose was excreted through urine. The elimination half-life of grapiprant is approximately 4.6 to 5.67 hours. Pharmaceutical particulars List of excipients Pork liver powder Lactose monohydrate Sodium starch glycolate Type A Sodium laurilsulfate Copovidone Cellulose, microcrystalline Magnesium stearate Silica, colloidal anhydrous Major incompatibilities Not applicable. Shelf life Shelf life of the veterinary medicinal product as packaged for sale: 3 years Shelf life after first opening the immediate packaging: 3 months. Any remaining whole and half tablets should be discarded after 3 months following first opening. Special precautions for storage Do not store above 30 °C. Any half tablets should be stored in the bottle. In order to avoid any accidental ingestion, store tablets out of reach of animals. Nature and composition of immediate packaging Induction sealed, white, round high density polyethylene (HDPE) bottles (20, 35, and 60 ml) with a threaded child-resistant cap with rayon coil. Pack sizes of 7 and 30 tablets per bottle. One bottle per cardboard box. Not all pack sizes may be marketed. Special precautions for the disposal of unused veterinary medicinal products or waste materials derived from the use of such products Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal product should be disposed of in accordance with local requirements.