PRAVASTATIN (pra-vah-stat'in) Pravachol Classifications: cardiovascular agent; antilipemic; hmg-coa reductase inhibitor (statin) Prototype: Lovastatin Pregnancy Category: X
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10 mg, 20 mg, 40 mg, 80 mg tablets
Competitively inhibits 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, the enzyme that catalyzes cholesterol biosynthesis.
HMG-CoA reductase inhibitors (statins) increase serum HDL cholesterol levels and decrease serum LDL cholesterol, VLDL cholesterol,
and plasma triglyceride levels.
It is effective in reducing total and LDL cholesterol in various forms of hypercholesterolemia.
Hypercholesterolemia (alone or in combination with bile acid sequestrants) and familial hypercholesterolemia.
Hypersensitivity to pravastatin; active liver disease or unexplained elevated liver function test; pregnancy (category X),
lactation. Safety and efficacy in children <8 y are not established.
Alcoholics, history of liver disease; renal impairment.
Hyperlipidemia Adult: PO 1080 mg q.d. Child: PO 813 y, 20 mg q.d.
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Oral
- Give without regard to meals.
- Give in the evening.
GI: Nausea, diarrhea, abdominal pain, vomiting, constipation, flatulence, heartburn, transient elevations in serum liver transaminase
levels. Other: Fatigue, rhinitis, cough, transient elevations in CPK.
Drug: May increase PT when administered with warfarin.
Absorption: Poorly absorbed from GI tract; 17% reaches systemic circulation. Onset: 2 wk. Peak: 4 wk. Distribution: 4355% protein bound; does not cross bloodbrain barrier; crosses placenta; distributed into breast milk. Metabolism: Extensive first-pass metabolism in liver; has no active metabolites. Elimination: 20% of dose excreted in urine, 71% in feces. Half-Life: 1.82.6 h.
Assessment & Drug Effects
- Lab tests: Perform liver function tests at start of therapy and then at 12 wk. If normal at 12 wk, may change to semiannual
monitoring. Monitor cholesterol levels throughout therapy.
- Monitor coagulation studies with patients receiving concurrent warfarin therapy. PT may be prolonged.
- Monitor CPK levels if patient experiences unexplained muscle pain.
Patient & Family Education
- Report unexplained muscle pain, tenderness, or weakness, especially if accompanied by malaise or fever, to physician promptly.
- Report signs of bleeding to physician promptly when taking concomitant warfarin therapy.
- Do not breast feed while taking this drug.