Clopid 75 mg (clopidogrel bisulphate): Uses, Dosage & Side Effects

What it's for (Indications)

Clopidogrel is used for the prevention of atherothrombotic events, including in patients with recent myocardial infarction (MI) (occurring within a few days to less than 35 days), recent ischemic stroke (occurring within 7 days to less than 6 months), or established peripheral arterial disease.
It is also indicated for acute coronary syndrome (ACS), specifically non-ST-elevation ACS (unstable angina or non-ST-elevation MI) and ST-elevation MI (STEMI), usually in combination with aspirin.
It helps in the prevention of stroke.

Dosage Information

Type	Guideline
Standard	Clopidogrel can be taken at any time of the day but should ideally be taken at the same time every day to maintain consistency. It can be administered with or without food. It is crucial to complete the full prescribed dose, even if feeling well after a few days. The duration of therapy depends on the doctor's recommendation but is usually prescribed for a maximum of 12 months for certain indications.\n\nFor adults (18 years and older):\n- Recent MI, Recent Stroke, or Established Peripheral Arterial Disease: 75 mg orally once daily.\n- Acute Coronary Syndrome (ACS):\n - Non-ST-elevation ACS (UA/NSTEMI): Initiate with a single 300 mg oral loading dose, followed by 75 mg once daily. Administer in combination with aspirin (75 mg to 325 mg once daily).\n - ST-elevation MI (STEMI): 75 mg orally once daily. Administer in combination with aspirin (75 mg to 325 mg once daily), with or without a loading dose.

Type

Guideline

Standard

Clopidogrel can be taken at any time of the day but should ideally be taken at the same time every day to maintain consistency. It can be administered with or without food. It is crucial to complete the full prescribed dose, even if feeling well after a few days. The duration of therapy depends on the doctor's recommendation but is usually prescribed for a maximum of 12 months for certain indications.\n\nFor adults (18 years and older):\n- **Recent MI, Recent Stroke, or Established Peripheral Arterial Disease:** 75 mg orally once daily.\n- **Acute Coronary Syndrome (ACS):**\n - **Non-ST-elevation ACS (UA/NSTEMI):** Initiate with a single 300 mg oral loading dose, followed by 75 mg once daily. Administer in combination with aspirin (75 mg to 325 mg once daily).\n - **ST-elevation MI (STEMI):** 75 mg orally once daily. Administer in combination with aspirin (75 mg to 325 mg once daily), with or without a loading dose.

Safety & Warnings

Common Side Effects

Commonly reported adverse reactions include bleeding, which can be life-threatening and even fatal.
Other potential side effects include gastrointestinal disturbances, skin reactions, nervous system disturbances, liver-associated disorders, white blood cell disorders, and serious allergic reactions such as Stevens-Johnson Syndrome.
Thrombotic Thrombocytopenic Purpura (TTP) is a serious and rare adverse reaction.
Signs of serious bleeding such as blood in urine/stool, unexplained, prolonged, or excessive bleeding should be immediately reported to a doctor.

Serious Warnings

Black Box Warning: WARNING: DIMINISHED EFFECTIVENESS IN POOR METABOLIZERS. The effectiveness of clopidogrel is dependent on its activation to an active metabolite by the cytochrome P450 (CYP) system, principally CYP2C19. Clopidogrel at recommended doses forms less of that metabolite and has a smaller effect on platelet function in patients who are CYP2C19 poor metabolizers. Poor metabolizers with acute coronary syndrome or undergoing percutaneous coronary intervention treated with clopidogrel at recommended doses exhibit higher cardiovascular event rates than patients with normal CYP2C19 function.
Patients who are CYP2C19 poor metabolizers may experience diminished effectiveness of clopidogrel, as its activation to an active metabolite is dependent on the cytochrome P450 (CYP) system, principally CYP2C19.
This can result in less active metabolite formation and a smaller effect on platelet function.
\n\nBleeding, including life-threatening and fatal bleeding, is the most common adverse reaction and a significant risk.
Patients should be advised to report any signs of unusual bleeding immediately.
Discontinuation of clopidogrel may be necessary if unusual bleeding occurs.
Thrombotic Thrombocytopenic Purpura (TTP) has been reported, which requires urgent treatment.
\n\nClopidogrel should not be used in children below 18 years of age.
\n\nCaution is advised in pregnant and lactating females; use only if the benefit justifies the potential risk and always under a doctor's recommendation.
\n\nPatients with renal (kidney) or hepatic (liver) impairment, a history of surgery, risk of bleeding, blood disorders, or acquired hemophilia should use this medicine with caution and consult their doctor for a thorough analysis.
\n\nDue to a reported risk of drowsiness, patients should avoid driving or operating heavy machinery if they experience this side effect.
\n\nAlcohol consumption should be limited or avoided while using clopidogrel.
\n\nInform your doctor about clopidogrel use before any surgical procedure due to increased bleeding risk.
\n\nDrug interactions may increase the risk of serious side effects.
Concurrent use with diabetes medications, proton pump inhibitors (PPIs), non-steroidal anti-inflammatory drugs (NSAIDs), other blood thinners, SSRIs & SNRIs (depression medications), and opioids (e.
g.
, codeine or morphine) should be carefully monitored or avoided, as these may potentiate bleeding or reduce clopidogrel effectiveness.

How it Works (Mechanism of Action)

Clopidogrel is an inhibitor of platelet activation and aggregation. Its active metabolite irreversibly binds to the P2Y12 class of ADP receptors on platelets, thereby preventing platelet activation.