Drug Interactions between Kynamro and Pravigard Pac

GENERALLY AVOID: Coadministration with alcohol may increase the risk of hepatotoxicity associated with the use of mipomersen. Mipomersen can cause elevations in serum transaminases and hepatic steatosis. In a premarketing clinical trial, 12% (4/34) of patients treated with mipomersen had at least one elevation in alanine aminotransferase (ALT) 3 times the upper limit of normal (ULN) or greater, and 9% (3/34) had at least one elevation in ALT 5 times ULN or greater, compared to 0% of the 17 patients treated with placebo. There were no concomitant clinically meaningful elevations of total bilirubin, international normalized ratio (INR), or partial thromboplastin time (PTT). Mipomersen also increases hepatic fat, with or without concomitant increases in transaminases. In clinical trials of patients with heterozygous familial hypercholesterolemia and hyperlipidemia, the median absolute increase in hepatic fat was 10% after 26 weeks of treatment, from 0% at baseline, measured by magnetic resonance imaging. The long-term consequences of hepatic steatosis associated with mipomersen therapy are unknown. Hepatic steatosis may be a risk factor for progressive liver disease, including steatohepatitis and cirrhosis.

MANAGEMENT: Since alcohol may increase levels of hepatic fat and induce or exacerbate liver injury, the manufacturer recommends that patients taking mipomersen not consume more than one alcoholic drink per day.

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GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.

MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.

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MONITOR: Concomitant use of statin medication with substantial quantities of alcohol may increase the risk of hepatic injury. Transient increases in serum transaminases have been reported with statin use and while these increases generally resolve or improve with continued therapy or a brief interruption in therapy, there have been rare postmarketing reports of fatal and non-fatal hepatic failure in patients taking statins. Patients who consume substantial quantities of alcohol and/or have a history of liver disease may be at increased risk for hepatic injury. Active liver disease or unexplained transaminase elevations are contraindications to statin use.

MANAGEMENT: Patients should be counseled to avoid substantial quantities of alcohol in combination with statin medications and clinicians should be aware of the increased risk for hepatotoxicity in these patients.

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One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster.

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