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Important Safety Information for COLCRYS (colchicine, USP)
- COLCRYS is contraindicated in patients with renal or hepatic impairment who are currently prescribed P-gp inhibitors or strong inhibitors of CYP3A4. In these patients, life-threatening and fatal colchicine toxicity has been reported with colchicine taken in therapeutic doses. Dose adjustments of COLCRYS may be required when co-administered with P-gp or CYP3A4 inhibitors in patients with normal renal and hepatic function.
- Fatal overdoses, both accidental and intentional, have been reported in adults and children who have ingested colchicine. Keep COLCRYS out of the reach of children.
- Blood dyscrasias such as myelosuppression, leukopenia, granulocytopenia, thrombocytopenia, pancytopenia, and aplastic anemia have been reported in patients taking colchicine at therapeutic doses.
- Colchicine-induced neuromuscular toxicity and rhabdomyolysis have been reported with chronic treatment in therapeutic doses, especially when colchicine is prescribed in combination with other drugs known to cause this effect. Patients with renal dysfunction and elderly patients, even those with normal renal and hepatic function, are at increased risk.
- Monitor for toxicity and if present consider temporary interruption or discontinuation of colchicine.
- The most common adverse reactions in clinical trials were diarrhea (23%) and pharyngolaryngeal pain (3%).
COLCRYS (colchicine, USP) 0.6 mg tablets are indicated in adults for the prophylaxis of gout flares and treatment of acute gout flares when taken at the first sign of a flare.
COLCRYS is not an analgesic medication and should not be used to treat pain from other causes.
Important Safety Information for ULORIC (febuxostat)
- ULORIC is contraindicated in patients being treated with azathioprine or mercaptopurine.
- An increase in gout flares is frequently observed during initiation of anti-hyperuricemic agents, including ULORIC. If a gout flare occurs during treatment, ULORIC need not be discontinued. Prophylactic therapy (i.e., NSAIDs or colchicine) upon initiation of treatment may be beneficial for up to six months.
- Cardiovascular Events: In randomized controlled studies, there was a higher rate of cardiovascular thromboembolic events (cardiovascular deaths, non-fatal myocardial infarctions, and non-fatal strokes) in patients treated with ULORIC [0.74 per 100 P-Y (95% CI 0.36-1.37)] than allopurinol [0.60 per 100 P-Y (95% CI 0.16-1.53)]. A causal relationship with ULORIC has not been established. Monitor for signs and symptoms of MI and stroke.
- Hepatic Effects: Postmarketing reports of hepatic failure, sometimes fatal, have been received. Causality cannot be excluded. During randomized controlled studies, transaminase elevations greater than three times the upper limit of normal (ULN) were observed (AST: 2%, 2%, and ALT: 3%, 2% in ULORIC and allopurinol-treated patients, respectively). No dose-effect relationship for these transaminase elevations was noted.
Obtain liver tests before starting treatment with ULORIC. Use caution in patients with liver disease. If liver injury is detected, promptly interrupt ULORIC and assess patient for probable cause, then treat cause if possible, to resolution or stabilization. Do not restart treatment if liver injury is confirmed and no alternate etiology can be found.
- Adverse reactions occurring in at least 1% of ULORIC-treated patients, and at least 0.5% greater than placebo, are liver function abnormalities, nausea, arthralgia, and rash. Patients should be instructed to inform their healthcare professional if they develop a rash or have any side effect that bothers them or does not go away.
ULORIC is a xanthine oxidase (XO) inhibitor indicated for the chronic management of hyperuricemia in patients with gout. ULORIC is not recommended for the treatment of asymptomatic hyperuricemia.
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- ULORIC (febuxostat) Prescribing Information. Takeda Pharmaceuticals.
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- Data on file, Takeda Pharmaceuticals U.S.A., Inc.
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