Rovex 10/Rovex 20 Drug Interactions

Ciclosporin: During concomitant treatment with Rosuvastatin Tablets and ciclosporin, rosuvastatin AUC values were on average 7 times higher than those observed in healthy volunteers. Concomitant administration did not affect plasma concentrations of ciclosporin.
Vitamin K antagonists: As with other HMG-CoA reductase inhibitors, the initiation of treatment or dosage up-titration of Rosuvastatin Tablets in patients treated concomitantly with vitamin K antagonists (e.g. warfarin or another coumarin anticoagulant) may result in an increase in International Normalised Ratio (INR). Discontinuation or down-titration of Rosuvastatin Tablets may result in a decrease in INR. In such situations, appropriate monitoring of INR is desirable.
Ezetimibe: Concomitant use of Rosuvastatin Tablets and ezetimibe resulted in no change to AUC or C_max for either drug. However, a pharmacodynamic interaction, in terms of adverse effects, between Rosuvastatin Tablets and ezetimibe cannot be ruled out.
Gemfibrozil and other lipid-lowering products: Concomitant use of Rosuvastatin Tablets and gemfibrozil resulted in a 2-fold increase in rosuvastatin C_max and AUC.
Based on data from specific interaction studies no pharmacokinetic relevant interaction with fenofibrate is expected, however a pharmacodynamic interaction may occur. Gemfibrozil, fenofibrate, other fibrates and lipid lowering doses (> or equal to 1 g/day) of niacin (nicotinic acid) increase the risk of myopathy when given concomitantly with HMG-CoA reductase inhibitors, probably because they can produce myopathy when given alone. The 40 mg dose is contraindicated with concomitant use of a fibrate. These patients should also start with the 5 mg dose.
Protease inhibitors: Although the exact mechanism of interaction is unknown, concomitant protease inhibitor use may strongly increase rosuvastatin exposure. In a pharmacokinetic study, co-administration of 20 mg rosuvastatin and a combination product of two protease inhibitors (400 mg lopinavir/100 mg ritonavir) in healthy volunteers was associated with an approximately two-fold and five-fold increase in rosuvastatin steady-state AUC_(0-24) and C_max respectively. Therefore, concomitant use of rosuvastatin in HIV patients receiving protease inhibitors is not recommended.
Antacid: The simultaneous dosing of Rosuvastatin Tablets with an antacid suspension containing aluminium and magnesium hydroxide resulted in a decrease in rosuvastatin plasma concentration of approximately 50%. This effect was mitigated when the antacid was dosed 2 hours after Rosuvastatin. The clinical relevance of this interaction has not been studied.
Erythromycin: Concomitant use of Rosuvastatin Tablets and erythromycin resulted in a 20% decrease in AUC_(0-t) and a 30% decrease in C_max of rosuvastatin. This interaction may be caused by the increase in gut motility caused by erythromycin.
Oral contraceptive/hormone replacement therapy (HRT): Concomitant use of Rosuvastatin Tablets and an oral contraceptive resulted in an increase in ethinyl estradiol and norgestrel AUC of 26% and 34%, respectively. These increased plasma levels should be considered when selecting oral contraceptive doses. There are no pharmacokinetic data available in subjects taking concomitant Rosuvastatin Tablets and HRT and therefore a similar effect cannot be excluded. However, the combination has been extensively used in women in clinical trials and was well tolerated.
Other medicinal products: Based on data from specific interaction studies no clinically relevant interaction with digoxin is expected.
Cytochrome P450 enzymes: Results from in vitro and in vivo studies show that rosuvastatin is neither an inhibitor nor an inducer of cytochrome P450 isoenzymes. In addition, rosuvastatin is a poor substrate for these isoenzymes. No clinically relevant interactions have been observed between rosuvastatin and either fluconazole (an inhibitor of CYP2C9 and CYP3A4) or ketoconazole (an inhibitor of CYP2A6 and CYP3A4). Concomitant administration of itraconazole (an inhibitor of CYP3A4) and rosuvastatin resulted in a 28% increase in AUC of rosuvastatin. This small increase is not considered clinically significant. Therefore, drug interactions resulting from cytochrome P450-mediated metabolism are not expected.