The CAPRIE trial was a 19,185-patient, 304-center, international, randomized, double-blind, parallel-group study comparing clopidogrel tablets (75 mg daily) to aspirin (325 mg daily). To be eligible to enroll, patients had to have: 1) recent history of myocardial infarction (within 35 days); 2) recent histories of ischemic stroke (within 6 months) with at least a week of residual neurological signs; and/or 3) established peripheral arterial disease (PAD). Patients received randomized treatment for an average of 1.6 years (maximum of 3 years).
The trial’s primary outcome was the time to first occurrence of new ischemic stroke (fatal or not), new myocardial infarction (fatal or not), or other vascular death. Deaths not easily attributable to nonvascular causes were all classified as vascular.
|Ischemic stroke (fatal or not)||438 (4.6%)||461 (4.8%)|
|MI (fatal or not)||275 (2.9%)||333 (3.5%)|
|Other vascular death||226 (2.4%)||226 (2.4%)|
|Total||939 (9.8%)||1,020 (10.6%)|
As shown in Table 6, clopidogrel tablets was associated with a lower incidence of outcome events, primarily MI. The overall relative risk reduction (9.8% vs 10.6%) was 8.7%, p=0.045. Similar results were obtained when all-cause mortality and all-cause strokes were counted instead of vascular mortality and ischemic strokes (risk reduction 6.9%). In patients who survived an on-study stroke or myocardial infarction, the incidence of subsequent events was lower in the clopidogrel tablets group.
The curves showing the overall event rate are shown in Figure 7. The event curves separated early and continued to diverge over the 3-year follow-up period.
Figure 7: Fatal or Nonfatal Vascular Events in the CAPRIE Study
The statistical significance favoring clopidogrel tablets over aspirin was marginal (p=0.045). However, because aspirin is itself effective in reducing cardiovascular events in patients with recent myocardial infarction or stroke, the effect of clopidogrel tablets is substantial.
The CAPRIE trial enrolled a population that had recent MI, recent stroke, or PAD. The efficacy of clopidogrel tablets relative to aspirin was heterogeneous across these subgroups (p=0.043) (see Figure 8). Nonetheless, this difference may be a chance occurrence because the CAPRIE trial was not designed to evaluate the relative benefit of clopidogrel tablets over aspirin in the individual patient subgroups. The benefit was most apparent in patients who were enrolled because of peripheral arterial disease and less apparent in stroke patients. In patients who were enrolled in the trial on the sole basis of a recent myocardial infarction, clopidogrel tablets was not numerically superior to aspirin.
Figure 8: Hazard Ratio and 95% CI by Baseline Subgroups in the CAPRIE Study
14.3 No Demonstrated Benefit of Clopidogrel Tablets plus Aspirin in Patients with Multiple Risk Factors or Established Vascular Disease
The CHARISMA trial was a 15,603 subject, randomized, double-blind, parallel group study comparing clopidogrel tablets (75 mg daily) to placebo for prevention of ischemic events in patients with vascular disease or multiple risk factors for atherosclerosis. All subjects were treated with aspirin 75 to 162 mg daily. The mean duration of treatment was 23 months. The study failed to demonstrate a reduction in the occurrence of the primary endpoint, a composite of CV death, MI, or stroke. A total of 534 (6.9%) patients in the clopidogrel tablets group versus 573 (7.4%) patients in the placebo group experienced a primary outcome event (p=0.22). Bleeding of all severities was more common in the subjects randomized to clopidogrel tablets.
Clopidogrel tablets, USP 75mg are available as light pink colored, round, beveled edge, biconvex film coated tablets printed “41” with black ink on one side and plain on the other side. Tablets are provided as follows:
Bottles of 30 NDC 43063-371-30
Bottles of 60 NDC 43063-371-60
Bottles of 90 NDC 43063-371-90
Store at 20° to 25° C (68° to 77° F); excursions permitted to 15° to 30° C (59° to 86° F) [See USP Controlled Room Temperature].
Advise patients not to discontinue clopidogrel tablets without first discussing it with the healthcare provider who prescribed it [see Warnings and Precautions ( 5.3)] .
Advise patients that they:
- will bruise and bleed more easily
- will take longer than usual to stop bleeding
- must report any unanticipated, prolonged, or excessive bleeding, or blood in their stool or urine [see Warnings and Precautions ( 5.2)] .
Instruct patients to get prompt medical attention if they experience symptoms of TTP that cannot otherwise be explained [see Warnings and Precautions ( 5.4)] .
Proton Pump Inhibitors
Advise patients not to take omeprazole or esomeprazole while taking clopidogrel tablets. Dexlansoprazole, lansoprazole, and pantoprazole had less pronounced effects on the antiplatelet activity of clopidogrel tablets than did omeprazole or esomeprazole [see Drug Interactions ( 7.1)] .
TORRENT PHARMACEUTICALS LTD., INDIA.
TORRENT PHARMA INC., Basking Ridge, NJ 07920
8092892 Revised: May 2023
Clopidogrel (kloe PID oh grel) Tablets, USP
Read this Medication Guide before you start taking clopidogrel tablets and each time you get a refill. There may be new information. This Medication Guide does not take the place of talking with your doctor about your medical condition or your treatment.
What is the most important information I should know about clopidogrel tablets?
1. Clopidogrel tablets may not work as well in people who:
- have certain genetic factors that affect how the body breaks down clopidogrel tablets. Your doctor may do genetic tests to make sure clopidogrel tablets are right for you.
- take certain medicines, especially omeprazole (Prilosec ® ) or esomeprazole (Nexium ® ). Your doctor may change the medicine you take for stomach acid problems while you take clopidogrel tablets.
2. Clopidogrel tablets can cause bleeding which can be serious and can sometimes lead to death. Clopidogrel tablets are blood thinner medicine that lowers the chance of blood clots forming in your body. While you take clopidogrel tablets:
- you may bruise and bleed more easily
- you are more likely to have nose bleeds
- it will take longer for any bleeding to stop
- unexpected bleeding or bleeding that lasts a long time
- blood in your urine (pink, red or brown urine)
- red or black stools (looks like tar)
- bruises that happen without a known cause or get larger
- cough up blood or blood clots
- vomit blood or your vomit looks like coffee grounds
Do not stop taking clopidogrel tablets without talking to the doctor who prescribes it for you. People who stop taking clopidogrel tablets too soon have a higher risk of having a heart attack or dying. If you must stop clopidogrel tablets because of bleeding, your risk of a heart attack may be higher.
What are clopidogrel tablets?
Clopidogrel tablets are prescription medicine used to treat people who have any of the following:
- chest pain due to heart problems
- poor circulation in their legs (peripheral arterial disease)
- a heart attack
- a stroke
Clopidogrel tablets are used alone or with aspirin to lower your chance of having another serious problem with your heart or blood vessels such as heart attack, stroke, or blood clot that can lead to death.
Platelets are blood cells that help your blood clot normally. Clopidogrel tablets help to prevent platelets from sticking together and forming a clot that can block an artery.
It is not known if clopidogrel tablets are safe and effective in children.
Who should not take clopidogrel tablets?
Do not take clopidogrel tablets if you:
- currently have a condition that causes bleeding, such as a stomach ulcer
- are allergic to clopidogrel or other ingredients in clopidogrel tablets. See the end of this leaflet for a complete list of ingredients in clopidogrel tablets.
Before you take clopidogrel tablets, tell your doctor if you:
- have a history of bowel (gastrointestinal) or stomach ulcers.
- have a history of bleeding problems.
- plan to have surgery or a dental procedure. See ” How should I take clopidogrel tablets? ”
- are pregnant or plan to become pregnant. It is not known if clopidogrel tablets will harm your unborn baby.
- are breastfeeding or plan to breastfeed. It is not known if clopidogrel bisulfate passes into your breast milk. A decision should be made with your healthcare provider to avoid or discontinue breastfeeding when continuing clopidogrel tablets is needed.
- have had an allergy or reaction to any medicine used to treat your disease.
Tell all of your doctors and your dentist that you are taking clopidogrel tablets. They should talk to the doctor who prescribed clopidogrel tablets for you before you have any surgery or invasive procedure.
Tell your doctor about all the medicines you take , including prescription, non-prescription medicines, vitamins and herbal supplements.
Clopidogrel tablets may affect the way other medicines work, and other medicines may affect how clopidogrel tablets work. See ” What is the most important information I should know about clopidogrel tablets? ”
Clopidogrel tablets may increase blood levels of other medicines such as repaglinide (Prandin ®).
Taking clopidogrel tablets with certain other medicines may increase your risk of bleeding. Especially tell your doctor if you take:
- aspirin, especially if you have had a stroke. Always talk to your doctor about whether you should take aspirin along with clopidogrel tablets to treat your condition.
- non-steroidal anti-inflammatory drugs (NSAIDs). Ask your doctor or pharmacist for a list of NSAID medicines if you are not sure.
- warfarin (Coumadin ® , Jantoven ®).
- selective serotonin reuptake inhibitors (SSRIs) and serotonin norepinephrine reuptake inhibitors (SNRIs). Ask your doctor or pharmacist for a list of SSRI or SNRI medicines if you are not sure.
- rifampin (used to treat severe infections)
- other antiplatelet agents
How should I take clopidogrel tablets?
- Take clopidogrel tablets exactly as your doctor tells you.
- Do not change your dose or stop taking clopidogrel tablets without talking to your doctor first. Stopping clopidogrel tablets may increase your risk of heart attack or stroke.
- Take clopidogrel tablets with aspirin as instructed by your doctor.
- If you miss a dose, take clopidogrel tablets as soon as you remember. If it is almost time for your next dose, skip the missed dose. Take the next dose at your regular time. Do not take 2 doses of clopidogrel tablets at the same time unless your doctor tells you to.
- If you take too much clopidogrel tablets, call your doctor or go to the nearest emergency room right away.
- Talk with your doctor about stopping your clopidogrel tablets before you have surgery. Your doctor may tell you to stop taking clopidogrel tablets at least 5 days before you have surgery to avoid excessive bleeding during surgery.
Clopidogrel tablets can cause serious side effects including:
- See “What is the most important information I should know about clopidogrel tablets?”
- A blood clotting problem called Thrombotic Thrombocytopenic Purpura (TTP). TTP can happen with clopidogrel tablets, sometimes after a short time (less than 2 weeks). TTP is a blood clotting problem where blood clots form in blood vessels; and can happen anywhere in the body. TTP needs to be treated in a hospital right away, because it may cause death. Get medical help right away if you have any of these symptoms and they cannot be explained by another medical condition:
- purplish spots (called purpura) on the skin or in the mouth (mucous membranes) due to bleeding under the skin
- your skin or the whites of your eyes are yellow (jaundice)
- you feel tired or weak
- your skin looks very pale
- fast heart rate or feeling short of breath
- speech changes
- low amount of urine, or urine that is pink or has blood in it
- stomach area (abdominal) pain
- nausea, vomiting, or diarrhea
- vision changes
- persistent low blood sugar symptoms
These are not all the possible side effects of clopidogrel tablets. For more information, ask your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store clopidogrel tablets?
- Store clopidogrel tablets at 59°F to 86°F (15°C to 30°C).
General information about clopidogrel tablets
Medicines are sometimes used for purposes other than those listed in a Medication Guide. Do not take clopidogrel tablets for a condition for which they were not prescribed. Do not give clopidogrel tablets to other people, even if they have the same symptoms that you have. It may harm them.
This Medication Guide summarizes the most important information about clopidogrel tablets. If you would like more information, talk to your doctor. Ask your doctor or pharmacist for information about clopidogrel tablets that was written for healthcare professionals.
For more information, call Torrent Pharma Inc. at 1-800-912-9561.
What are the ingredients in clopidogrel tablets?
Active ingredient: clopidogrel bisulfate, USP
Tablet: colloidal silicon dioxide, hydrogenated castor oil, lactose monohydrate, low substituted hydroxypropyl cellulose, magnesium stearate, mannitol, microcrystalline cellulose and polyethylene glycol 6000
Film coating: ferric oxide red, hypromellose 2910, and titanium dioxide
This Medication Guide has been approved by the U.S. Food and Drug Administration.
Trademarks are the property of their respective owners.
TORRENT PHARMACEUTICALS LTD., INDIA.
TORRENT PHARMA INC., Basking Ridge, NJ 07920.
8092893 Revised: May 2023
All MedLibrary.org resources are included in as near-original form as possible, meaning that the information from the original provider has been rendered here with only typographical or stylistic modifications and not with any substantive alterations of content, meaning or intent.