Pletal (Cilostazol): Comprehensive Patient Information
Basic Product Information
| International Non-Proprietary Name (INN) | Cilostazol |
|---|---|
| Brand Names in Australia | Pletal |
| Anatomical Therapeutic Chemical (ATC) Code | B01AC23 |
| Available Forms and Strengths | Oral tablets: 100 mg (most common), 50 mg (less commonly available) |
| Manufacturers | Otsuka Pharmaceutical Co Ltd, local distributors/marketers |
| Prescription Status | Prescription-Only (Schedule 4, S4 medicine in Australia) |
Mechanism of Action
For patients: Pletal (cilostazol) works by helping to improve blood flow to your legs. It does this by preventing platelets (a type of blood cell) from clumping together and by widening blood vessels. This lets more blood reach your muscles, especially when you are walking, making it easier and less painful to stay active.
For healthcare professionals: Cilostazol is a selective inhibitor of phosphodiesterase III (PDE III), increasing intracellular cAMP in platelets and vascular smooth muscle. This results in reversible inhibition of platelet aggregation, vasodilation, and enhanced microcirculatory flow. Secondary metabolic effects may also decrease serum triglycerides and increase HDL cholesterol.
Pharmacokinetics
- Absorption: Well absorbed orally, with peak plasma concentration reached within 2–4 hours after ingestion (slower with food).
- Metabolism: Extensively metabolised in the liver by cytochrome P450 CYP3A4, CYP2C19, and (to a lesser extent) CYP1A2. Produces two active metabolites.
- Elimination: Eliminated primarily via urine (major route) and faeces (minor route). Less than 1% is excreted unchanged in urine.
- Duration of Action: Plasma elimination half-life is 11–13 hours (parent compound); steady state is achieved after 4 days of repeated dosing.
Everyday Use and Best Practices
Typical doses: The standard adult dose in Australia is 100 mg, taken twice daily (morning and evening), ideally at 12-hour intervals.
How to take Pletal: Swallow the tablet whole with water. Do not crush or chew. You should take Pletal about 30 minutes before or 2 hours after a meal, unless advised otherwise by your pharmacist or doctor.
Everyday advice: For those living in Australia, regular walking and gentle exercise while on cilostazol is highly recommended. The medication is most effective when combined with lifestyle changes such as quitting smoking, following a healthy Australian diet (rich in fruit, vegetables, lean proteins, and low in saturated fats), and managing cholesterol and blood pressure.
Dosing in the Morning vs. Evening
- For Pletal’s twice-daily dosing, it's best to space the doses 12 hours apart (typically morning and evening).
- Advantages: Regular timing keeps cilostazol levels stable in your blood, maximising its benefits and reducing the risk of side effects.
- Disadvantages: Skipping or double-dosing increases the risk of side effects or loss of efficacy.
- Tips: Set a daily alarm or reminder, and try to make dosing part of your daily routine (e.g., after brushing your teeth in the morning and evening).
With Food or on an Empty Stomach?
- Pletal should be taken half an hour before food or two hours after food.
- Taking with a high-fat meal significantly increases absorption and risk of side effects.
- For those following an English/Australian diet, try to time your dose so it does not coincide with breakfast or dinner (e.g., before breakfast and after supper).
- Always follow your prescriber or pharmacist’s advice about timing with food.
Interaction Warnings
| Interaction | Details and Advice |
|---|---|
| Food | High-fat meals increase absorption and may increase risk of side effects. Take on empty stomach. |
| Alcohol | Moderate alcohol may increase bleeding risk. Avoid excessive drinking. |
| Grapefruit Juice | Can increase cilostazol levels by affecting liver metabolism. Avoid grapefruit/grapefruit juice. |
| Blood Thinners (e.g., warfarin, rivaroxaban, apixaban) | Increases risk of bleeding. Use with caution – your doctor may adjust dosage. |
| Antiplatelets (e.g., aspirin, clopidogrel) | Combined effects may increase bleeding risk. Clinical monitoring advised. |
| CYP3A4/CYP2C19 Inhibitors (e.g., ketoconazole, erythromycin, omeprazole) | Increases Pletal levels, raising side effect risk. |
| CYP3A4 Inducers (e.g., rifampicin, carbamazepine) | May reduce Pletal effectiveness. |
| Other common medicines (Australian context) | Check with pharmacist before starting new medicines, vitamins, or supplements while on Pletal. |
Indications
| Indication | Approved/Off-Label | Details |
|---|---|---|
| Intermittent Claudication in Peripheral Arterial Disease (PAD) | Approved (TGA) | Improves walking distance and symptoms in adults where lifestyle changes alone are insufficient. |
| Secondary stroke prevention | Off-label | Occasionally used in patients where standard antiplatelets are unsuitable—under specialist advice. |
| Other circulatory conditions | Off-label | Possible specialist use (e.g., Buerger's disease), but not routinely recommended in Australia. |
Dosing According to Clinical Indications
| Patient Group | Indication | Recommended Dose |
|---|---|---|
| Adults (including elderly, if no hepatic/renal impairment) | Intermittent claudication | 100 mg twice daily (12-hour intervals) |
| Adults with mild–moderate renal impairment | Intermittent claudication | Standard dose (monitor for side effects) |
| Severe renal or hepatic impairment | All indications | Not recommended |
| Children | Not indicated | Use not recommended due to lack of data |
| Elderly (75+ years) | Intermittent claudication | Standard adult dose (with caution, monitor for side effects) |
Safety Profile and Side Effects
| Frequency | Possible Side Effects | Advice |
|---|---|---|
| Very Common (≥1 in 10) | Headache, diarrhoea, palpitations | Usually mild and resolve with continued use. Seek advice if persistent. |
| Common (1 in 10 – 1 in 100) | Abnormal heartbeat (arrhythmias), chest pain, dizziness, nausea, abdominal pain, runny nose, increased bruising, rash | Discuss with your pharmacist/GP if troublesome or persistent. |
| Rare (<1 in 1,000) | Serious bleeding, blood disorders, severe allergic reaction, blood pressure changes, heart failure | Seek urgent medical attention if experiencing severe symptoms, chest pain, sudden weakness, or severe rash. |
| Cautions | History of heart failure, bleeding risk (e.g., ulcers, recent stroke) | Should only be used after careful medical assessment. |
Guidelines for Proper Use (Pharmacist/Clinic Advice)
- Take at the same times every day on an empty stomach as advised.
- Do not stop suddenly or skip doses—if you miss a dose, take the next dose at the right time. Do not double dose.
- Consult your doctor before using over-the-counter painkillers, herbal supplements, or new prescriptions.
- Notify your GP or pharmacist if you develop black stools, unusual bruising, bleeding, or palpitations.
- Attend regular check-ups to monitor blood pressure, heart rhythm, and walking distance/progress.
- If pregnant, breastfeeding, or planning a pregnancy, seek specialist advice before using Pletal.
Alternative Treatment Options
- Exercise rehabilitation: Most effective non-drug therapy—gradual walking programs improve symptoms with or without medication.
- Antiplatelets (aspirin, clopidogrel): Used for cardiovascular risk reduction but do not specifically improve walking distance in PAD.
- Naftidrofuryl oxalate: TGA-approved but less commonly prescribed than cilostazol; suitable for select patients, may cause GI side effects. Not currently subsidised under the PBS (Pharmaceutical Benefits Scheme).
- Pentoxifylline: Not recommended by Australian guidelines due to limited benefit.
- Supervised exercise programs and angioplasty: Recommended for severe cases or when medicines are ineffective.
Legal, Registration, and Reimbursement Status in Australia
- Pletal (cilostazol) is registered with the Therapeutic Goods Administration (TGA).
- This medicine is Prescription-Only (Schedule 4).
- Pletal is not routinely available on the Pharmaceutical Benefits Scheme (PBS) and likely must be purchased privately.
- Always request a valid Australian prescription when ordering from pharmacies or online services.
Latest Research and Clinical Guidance (2022–2025)
- Recent major English and international studies suggest cilostazol improves pain-free walking distance for patients with intermittent claudication, with best results when combined with structured exercise (Australian Journal of General Practice, 2023).
- Australian PAD guidelines (2022–2023) highlight cilostazol as an option for those not responding to exercise/lifestyle, provided there are no contraindications such as heart failure.
- Review articles confirm bleeding risk, particularly with combined use of other antiplatelets or anticoagulants. Cautious monitoring advised (Therapeutic Guidelines—Cardiovascular, Edition 2023).
- Studies from the UK and Europe (e.g., Cochrane Reviews) support Pletal’s modest but significant benefit in improving walking capacity. No evidence of disease progression benefit.
- No new indications or changes in PBS listing as of 2024–2025.
Availability and Delivery in Australia
| Pack Size | Estimated Price (private) | Approximate Delivery Time |
|---|---|---|
| 100 mg x 56 tablets (4 weeks) | $60–$110 AUD | 1–3 days (Sydney, Melbourne, Brisbane); 2–5 days (Perth, Adelaide, Darwin, Hobart, regional) |
| 100 mg x 112 tablets (8 weeks) | $110–$200 AUD | Same as above; allow extra for remote/rural areas |
- Available from most community pharmacies and main online pharmacy platforms.
- Some regional/rural areas may require special order with 1–2 days’ extra delivery time.
- Pack size and price may vary—ask your pharmacist for current options.
Frequently Asked Questions (FAQ)
1. How long does it take to feel the benefits of Pletal?
Most people notice improvement after 2–4 weeks, but maximum benefit is usually seen at 8–12 weeks. Continuous daily use and regular walking exercise help you get the best results.
2. Can I drink alcohol while taking Pletal?
Small amounts of alcohol may be safe, but alcohol can increase bleeding or interact with your medicines. Avoid excessive drinking and consult your pharmacist if you have concerns.
3. What should I do if I miss a dose?
If you forget a dose, skip it, and take your next scheduled dose at the usual time. Do not take double the usual dose to make up for a missed one.
4. Is Pletal safe for people with heart problems?
Pletal is NOT recommended for patients with a history of heart failure. If you have any form of heart disease, tell your GP and pharmacist before starting this medicine.
5. Can I buy Pletal online in Australia?
Pletal is prescription-only in Australia. Only order from a registered pharmacy with a valid Australian prescription, and ensure safe delivery to your address.
Always consult your Australian healthcare professional for personal advice and guidance.
