CARDIPRES Carvedilol 25mg Film-Coated Tablet 1's
Indications/Uses
Dosage/Direction for Use
Treatment should begin with 1/2 tablet Carvedilol (=12.5 mg) daily for the first two (2) days. After that treatment can continue with 1 tablet Carvedilol daily.
Do not increase the dose unless directed by the doctor. If the effect is insufficient, the doctor may increase the dose to 1 tablet Carvedilol twice daily after 14 days at the earliest. A single dose of 25 mg or a total daily dose of 50 mg should not be exceeded.
Administration
Contraindications
Carvedilol should not be used during pregnancy and lactation or in children because of a lack of experience in these cases.
Special Precautions
Adverse Reactions
Other common side effects of Carvedilol are irregular heart rhythm, and abnormalities of vision.
Wearers of contact lens should be aware of the possibility or reduced lacrimation.
Drug Interactions
Carvedilol taken with calcium channel blockers such as diltiazem or verapamil may trigger an irregular heart rhythm or an increase in blood pressure.
Reserpine, monoamine oxidase inhibitors and clonidine, because they have similar mechanisms of action as carvedilol, may greatly accentuate the effects of carvedilol and cause a steep decline a blood pressure and/or heart rate. Close monitoring of blood pressure and heart rate may be needed.
Carvedilol may cause an increase in digoxin blood levels. Therefore, in patients receiving digoxin, the digoxin blood level should be monitored if carvedilol is started, adjusted or discontinued.
Rifampin can sharply decrease the carvedilol blood level. Therefore, in patients taking rifampin, the dose of carvedilol may need to be increased.
Carvedilol shares a common pathway for elimination by the liver with several other drugs such as quinidine, fluoxetine, paroxetine, or propafenone. Use of these drugs may block the elimination of carvedilol. No studies have been done to confirm these effects on the elimination of carvedilol, however, carvedilol blood levels may be increase (along with the risk for carvedilol's side effects) if patients are taking any of these drugs.
Carvedilol may increase the levels in the blood of cyclosporin, and the dose cyclosporin may need to be adjusted when the two drugs are used together.
Storage
Action
Pharmacokinetics: Absorption: Following oral administration, carvedilol is rapidly absorbed. The maximum serum concentration is reached after approximately 1 hr. Approximately 98-99% of carvedilol is bound to plasma proteins. Carvedilol is a lipophilic compound, the distribution volume is approximately 2 L/kg and is during long-term treatment.
Elimination: The average elimination half-life of carvedilol ranges from 6-10 hrs. Plasma clearance is approximately 590 mL/min. Elimination is mainly biliary. The primary route of excretion is via the feces. A minor part is eliminated via the kidneys in the form of various metabolites.
Bioavailability: The absolute bioavailability of carvedilol in humans is approximately 25%. Food does not affect the extent of bioavailability, although the time to reach maximum plasma concentrations is prolonged.
In patients with impaired liver function, bioavailability is raised to as much as 80% due to a reduced first-pass effect.
MedsGo Class
Features
- Carvedilol