Drug Interaction:
Co-administration of drugs that affect CYP3A4 (erythromycin and other macrolides , dilitiazem ) or CYP2C19 (omeprazole) has the potential to influence the pharmacokinetics of clistazol
Indication:
HIGHLIGHTS OF PRESCRIBING INFORMATION
These highlights do not include all the information needed to use
PLETAL safely and effectively. See full prescribing information for PLETAL. PLETAL? (cilostazol) tablets, for oral use.
Initial U.S. Approval: 1999
LIST OF DRUGS DURING 2007
Sr.No- 156
Name of the Drug- Cilostazole ER tablet (100mg/200mg) Pharmacological Classification- For management of intermttant claudication
Date of Approval- 30-10-07
Approved by U.S.FDA on 30-12-2007 (Ref- FDA approved List- 2007)
New drugs approved For Marketing by Drug Controller General of India(DCGI ) during the period January 1988 to November 2014 (Ref- IDMA Annual Publication 2015)
Name of Drug Indication Date of Approval
1. Cilostazol 23-01-2003
For intermittent claudication
2. Cilostazol ER tablet 30-10-2007
100mg/200mg
For management intermittent claudication
Intermittant claudication
100mg twice daily 30 minutes before or 2 hours after breakfast and evening meal
children- not recommendedIntermittant claudication
Adverse Reaction:
Cilostazol has been well tolerated in clinical trials.
The most comon adverse recations are headache, diarrhea, abnormal stools, pain, infection, pharyngitis, rhinitis, peripheral edema, and nausea.
Adverse effects are generally mild to moderate in intensity, transcient or resolved after symptomatic treatment and rarely required treatment withdrawal.
Contra-Indications:
None reported
Special precautions-
Patients with coronary heart disease, those receiving concomittant medications with inhibitors of CYP3A4 or CYP2C19
Dosages/ Overdosage Etc:
Initial U.S. Approval: 1999
Indication-
Intermittant claudication
Dosage-
100mg twice daily 30 minutes before or 2 hours after breakfast and evening meal
Children- not recommendedIntermittant claudication
Other Information:
Stroke
EVIDENCE BASED MEDICINE (MIMS -April 2003)
Stroke prevention
Comparative effectiveness of various interventions
PRIOR TO STROKE OR TRANSIENT ISCHAEMIC ACCIDENT (TIA)
Beneficial
1. Antiplatelet treatment
2. Cholestrerol reduction (for those patients who also have coronary heart disease)
3. Carotid endarterectomy (in patients with severe symptomatic carotid artery stenosis)
Unknown effectiveness
1. Cholesterol reduction (for patients without CHD)
2. Blood pressure reduction
3. Carotid endarterectomy (in patients with severe symptomatic carotid artery stenosis)
4. Catotid angioplasty
Likely to ineffective or even harmful
1. Oral anticoagulation
ATRIAL FIBRILLATION AND A PRIOR STROKE OR TIA
Beneficial
1. Oral anticoagulation
2. Aspirin for patients with contraindications to an anticoagulant
ATRIAL FIBRILLATION BUT NO OTHER MAJOR RISK FACTORS FOR STROKE
Likely to be beneficial
1. Oral anticoagulation
2. Aspirin for patients with contraindications to an anticoagulant
KEY POINTS
In patients with a prior stroke or TIA
1. Insufficient evidence to support routine blood presure reduction
2. Statins may prevent stroke in those with a history of CHD but evidence inconclusive in those with no history of CHD.
3. Routine use of prolonged anti-platelet treatment beneficial ( if no contraindication)
4. Aspirin 75mg daily as effective as higher doses. No evidence that any other antiplatelet regimen is definitely
superior in the prevention of vascular events. Clopidogrel or the combination of asprin and dipyridamole are safe
and effective (but more costly) alternatives to aspirin
5. No evidence of benefit from anti-coagulation in patients in sinus rhythm, but an increased risk of serious bleeding
6. Carotid endarterectomy reduces risk of major stroke in patients with severe carotid stenosis provided the risks of
imaging and surgery are small.
7. Percutaneous transluminal angioplastys role has not been evaluated adequately
In patients with atrial fibrillation and a pror stroke or TIA
1. Anticoagulants reduce risk of stroke, provided there is low risk of bleeding and careful monitoring
2. Aspirin reduces risk of stroke but less effectively than anticoagulants. These findings support the use of aspirin
among patients with atrial fibrillation and contra-indication to anticoagulants
In patients with atrial fibrillation but neither major risk factors for stroke
1. Anticoagulants are of net benefit, if low risk of bleeding and careful monitoring
2. Aspirin is a reasonable alternative in patients with contra-indications to anticoagulants
Patient Information:
PATIENT COUNSELING INFORMATION
Advise the patient to read the FDA-approved patient labeling (Patient Information)
Advise the patient:
• to take PLETAL at least one-half hour before or two hours after food. • to discuss with their doctor before taking any CYP3A4 or CYP2C19 inhibitors (e.g., omeprazole)
• that the beneficial effects of PLETAL on the symptoms of intermittent claudication may not be immediate. Although the patient may experience benefit in 2 to 4 weeks after initiation of therapy, treatment for up to 12 weeks may be required before a beneficial effect is experienced.
Discontinue PLETAL if symptoms do not improve after 3 months.
Manufactured for OTSUKA AMERICA PHARMACEUTICAL, INC. Rockville, MD 20850 Manufactured by OTSUKA PHARMACEUTICAL CO., LTD. Tokushima 771-0182, Japan
Pharmacology/ Pharmacokinetics:
Pharmacology-
Clostazol has antiplatelet , antithrombotic and vasodilating properties. In vitro and ex vivo and in vivo studies have shown that clostazol inhibits both primary and and scecondary platelet aggregation induced by ADP , collagen , arachiodonic acid, and ephedrine, thrrombin, remnant -like lipoprotein and sheer strees without affecting bleeding time.
Pharmacokinetics-
On Oral administration of multiple doses cilostazol reaches steady state within 4 days . The peak plasma concentration is around 2.7 hours after the final dose.
Co-administration with food (especially high fat meal) increases the rate and also clostazol absorption.
A high fat meal increase absorption with an approximately 90% increase in maximum
plasma concentration Cmax and a 25% increase in area under the curve AUC
Absolute bioavailability is not known
Interaction with Food:
Co-administration with food (especially high fat meal) increases the rate and also clostazol absorption
To be taken twice daily 30 minutes before or 2 hours after breakfast and evening meal