Aspirin and Extended-Release Dipyridamole

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Overview

What is Aspirin and Extended-Release Dipyridamole?

Aspirin and extended-release dipyridamole is a combination antiplatelet agent intended for oral administration. Each hard gelatin capsule contains 200 mg dipyridamole, USP in an extended-release form and 25 mg aspirin USP, as an immediate-release sugar-coated tablet. In addition, each capsule contains the following inactive ingredients: colloidal silicon dioxide, corn starch, hypromellose, hypromellose phthalate, lactose monohydrate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene glycol, simethicone, stearic acid, sucrose, talc, tartaric acid, triethyl citrate and triacetin.

Each capsule shell contains D&C Yellow #10, gelatin, iron oxide red, iron oxide yellow, purified water, sodium lauryl sulfate and titanium dioxide.

The imprinting inks contain butyl alcohol, D&C Yellow #10, dehydrated alcohol, FD&C Red #40, isopropyl alcohol, povidone, propylene glycol, shellac, sodium hydroxide and titanium dioxide.

Dipyridamole, USP

d

Dipyridamole, USP is an odorless yellow crystalline substance, having a bitter taste. It is soluble in dilute acids, methanol and chloroform, and is practically insoluble in water.

Aspirin, USP

Aspirin, USP is an odorless white needle-like crystalline or powdery substance. When exposed to moisture, aspirin hydrolyzes into salicylic and acetic acids, and gives off a vinegary odor. It is highly lipid soluble and slightly soluble in water.

What does Aspirin and Extended-Release Dipyridamole look like?

What are the available doses of Aspirin and Extended-Release Dipyridamole?

25 mg/200 mg capsules with a red opaque cap and a yellow opaque body, filled with light yellow to yellow extended-release dipyridamole pellets and a white to off-white, round, film-coated, biconvex, unscored, plain aspirin tablet. The capsule is imprinted axially with “AN” in yellow ink on the cap and “596” in red ink on the body.

What should I talk to my health care provider before I take Aspirin and Extended-Release Dipyridamole?

How should I use Aspirin and Extended-Release Dipyridamole?

Aspirin and extended-release dipyridamole capsules are indicated to reduce the risk of stroke in patients who have had transient ischemia of the brain or completed ischemic stroke due to thrombosis.

Aspirin and extended-release dipyridamole capsules are not interchangeable with the individual components of aspirin and dipyridamole tablets.

The recommended dose of aspirin and extended-release dipyridamole capsules is one capsule given orally twice daily, one in the morning and one in the evening. Swallow capsules whole without chewing. Aspirin and extended-release dipyridamole capsules can be administered with or without food.

What interacts with Aspirin and Extended-Release Dipyridamole?

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What are the warnings of Aspirin and Extended-Release Dipyridamole?

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What are the precautions of Aspirin and Extended-Release Dipyridamole?

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What are the side effects of Aspirin and Extended-Release Dipyridamole?

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What should I look out for while using Aspirin and Extended-Release Dipyridamole?

Hypersensitivity to any product ingredients

Patients with known allergy to NSAIDs

Patients with the syndrome of asthma, rhinitis and nasal polyps

What might happen if I take too much Aspirin and Extended-Release Dipyridamole?

Because of the dose ratio of dipyridamole to aspirin, overdosage of aspirin and extended-release dipyridamole is likely to be dominated by signs and symptoms of dipyridamole overdose. In case of real or suspected overdose, seek medical attention or contact a Poison Control Center immediately. Careful medical management is essential.

Based upon the known hemodynamic effects of dipyridamole, symptoms such as warm feeling, flushes, sweating, restlessness, feeling of weakness and dizziness may occur. A drop in blood pressure and tachycardia might also be observed.

Salicylate toxicity may result from acute ingestion (overdose) or chronic intoxication. Severity of aspirin intoxication is determined by measuring the blood salicylate level. The early signs of salicylic overdose (salicylism), including tinnitus (ringing in the ears), occur at plasma concentrations approaching 200 mcg/mL. In severe cases, hyperthermia and hypovolemia are the major immediate threats to life. Plasma concentrations of aspirin above 300 mcg/mL are clearly toxic. Severe toxic effects are associated with levels above 400 mcg/mL. A single lethal dose of aspirin in adults is not known with certainty but death may be expected at 30 g.

Treatment of overdose consists primarily of supporting vital functions, increasing drug elimination, and correcting acid-base disturbances. Consider gastric emptying and/or lavage as soon as possible after ingestion, even if the patient has vomited spontaneously. After lavage and/or emesis, administration of activated charcoal as a slurry may be beneficial if less than 3 hours have passed since ingestion. Charcoal absorption should not be employed prior to emesis and lavage. Follow acid-base status closely with serial blood gas and serum pH measurements. Maintain fluid and electrolyte balance. Administer replacement fluid intravenously and augment with correction of acidosis. Treatment may require the use of a vasopressor. Infusion of glucose may be required to control hypoglycemia.

Administration of xanthine derivatives (e.g., aminophylline) may reverse the hemodynamic effects of dipyridamole overdose. Plasma electrolytes and pH should be monitored serially to promote alkaline diuresis of salicylate if renal function is normal. In patients with renal insufficiency or in cases of life-threatening intoxication, dialysis is usually required to treat salicylic overdose; however, since dipyridamole is highly protein bound, dialysis is not likely to remove dipyridamole. Exchange transfusion may be indicated in infants and young children.

How should I store and handle Aspirin and Extended-Release Dipyridamole?

Store olanzapine tablets 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].Protect olanzapine tablets from light and moisture. Store olanzapine tablets 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].Protect olanzapine tablets from light and moisture. Aspirin and extended-release dipyridamole capsules, are available as two piece hard gelatin capsules, with a red opaque cap and a yellow opaque body, filled with light yellow to yellow extended-release dipyridamole pellets and a white to off-white, round, film-coated, biconvex, unscored, plain aspirin tablet. The capsule is imprinted axially with “AN” in yellow ink on the cap and “596” in red ink on the body. Aspirin and extended-release dipyridamole capsules are supplied as follows: Unit dose packages of 20 (5 x 4) NDC 60687-305-32 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]. Protect from excessive moisture.FOR YOUR PROTECTION:Aspirin and extended-release dipyridamole capsules, are available as two piece hard gelatin capsules, with a red opaque cap and a yellow opaque body, filled with light yellow to yellow extended-release dipyridamole pellets and a white to off-white, round, film-coated, biconvex, unscored, plain aspirin tablet. The capsule is imprinted axially with “AN” in yellow ink on the cap and “596” in red ink on the body. Aspirin and extended-release dipyridamole capsules are supplied as follows: Unit dose packages of 20 (5 x 4) NDC 60687-305-32 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]. Protect from excessive moisture.FOR YOUR PROTECTION:Aspirin and extended-release dipyridamole capsules, are available as two piece hard gelatin capsules, with a red opaque cap and a yellow opaque body, filled with light yellow to yellow extended-release dipyridamole pellets and a white to off-white, round, film-coated, biconvex, unscored, plain aspirin tablet. The capsule is imprinted axially with “AN” in yellow ink on the cap and “596” in red ink on the body. Aspirin and extended-release dipyridamole capsules are supplied as follows: Unit dose packages of 20 (5 x 4) NDC 60687-305-32 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]. Protect from excessive moisture.FOR YOUR PROTECTION:

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Clinical Information

Chemical Structure

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Clinical Pharmacology

The antithrombotic action of aspirin and extended-release dipyridamole is the result of the additive antiplatelet effects of dipyridamole and aspirin.

Dipyridamole

in vitro

in vivo

Dipyridamole inhibits phosphodiesterase (PDE) in various tissues. While the inhibition of cAMP-PDE is weak, therapeutic levels of dipyridamole inhibit cyclic-3",5"guanosine monophosphate-PDE (cGMP-PDE), thereby augmenting the increase in cGMP produced by EDRF (endothelium-derived relaxing factor, now identified as nitric oxide).

Aspirin

Non-Clinical Toxicology

Hypersensitivity to any product ingredients

Patients with known allergy to NSAIDs

Patients with the syndrome of asthma, rhinitis and nasal polyps

CNS Drugs - Given the primary CNS effects of citalopram, caution should be used when it is taken in combination with other centrally acting drugs.

Alcohol - Although citalopram did not potentiate the cognitive and motor effects of alcohol in a clinical trial, as with other psychotropic medications, the use of alcohol by depressed patients taking citalopram is not recommended.

Monoamine Oxidase Inhibitors (MAOIs) - See CONTRAINDICATIONS, WARNINGS and DOSAGE AND ADMINISTRATION.

Drugs That Interfere With Hemostasis (NSAIDs, Aspirin, Warfarin, etc.)- Serotonin release by platelets plays an important role in hemostasis. Epidemiological studies of the case-control and cohort design that have demonstrated an association between use of psychotropic drugs that interfere with serotonin reuptake and the occurrence of upper gastrointestinal bleeding have also shown that concurrent use of an NSAID or aspirin may potentiate the risk of bleeding. Altered anticoagulant effects, including increased bleeding, have been reported when SSRIs and SNRIs are coadministered with warfarin. Patients receiving warfarin therapy should be carefully monitored when citalopram is initiated or discontinued.

Cimetidine - In subjects who had received 21 days of 40 mg/day citalopram, combined administration of 400 mg/day cimetidine for 8 days resulted in an increase in citalopram AUC and C of 43% and 39%, respectively.

Citalopram 20 mg/day is the maximum recommended dose for patients taking concomitant cimetidine because of the risk of QT prolongation (see and )

Digoxin - In subjects who had received 21 days of 40 mg/day citalopram, combined administration of citalopram and digoxin (single dose of 1 mg) did not significantly affect the pharmacokinetics of either citalopram or digoxin.

Lithium - Coadministration of citalopram (40 mg/day for 10 days) and lithium (30 mmol/day for 5 days) had no significant effect on the pharmacokinetics of citalopram or lithium. Nevertheless, plasma lithium levels should be monitored with appropriate adjustment to the lithium dose in accordance with standard clinical practice. Because lithium may enhance the serotonergic effects of citalopram, caution should be exercised when citalopram and lithium are coadministered.

Pimozide - In a controlled study, a single dose of pimozide 2 mg co-administered with citalopram 40 mg given once daily for 11 days was associated with a mean increase in QTc values of approximately 10 msec compared to pimozide given alone. Citalopram did not alter the mean AUC or C of pimozide. The mechanism of this pharmacodynamic interaction is not known.

Theophylline - Combined administration of citalopram (40 mg/day for 21 days) and the CYP1A2 substrate theophylline (single dose of 300 mg) did not affect the pharmacokinetics of theophylline. The effect of theophylline on the pharmacokinetics of citalopram was not evaluated.

Sumatriptan - There have been rare postmarketing reports describing patients with weakness, hyperreflexia, and incoordination following the use of a SSRI and sumatriptan. If concomitant treatment with sumatriptan and an SSRI (e.g., fluoxetine, fluvoxamine, paroxetine, sertraline, citalopram) is clinically warranted, appropriate observation of the patient is advised.

Warfarin - Administration of 40 mg/day citalopram for 21 days did not affect the pharmacokinetics of warfarin, a CYP3A4 substrate. Prothrombin time was increased by 5%, the clinical significance of which is unknown.

Carbamazepine - Combined administration of citalopram (40 mg/day for 14 days) and carbamazepine (titrated to 400 mg/day for 35 days) did not significantly affect the pharmacokinetics of carbamazepine, a CYP3A4 substrate. Although trough citalopram plasma levels were unaffected, given the enzyme-inducing properties of carbamazepine, the possibility that carbamazepine might increase the clearance of citalopram should be considered if the two drugs are coadministered.

Triazolam - Combined administration of citalopram (titrated to 40 mg/day for 28 days) and the CYP3A4 substrate triazolam (single dose of 0.25 mg) did not significantly affect the pharmacokinetics of either citalopram or triazolam.

Ketoconazole - Combined administration of citalopram (40 mg) and ketoconazole (200 mg) decreased the C and AUC of ketoconazole by 21% and 10%, respectively, and did not significantly affect the pharmacokinetics of citalopram.

CYP2C19 Inhibitors – Citalopram 20 mg/day is the maximum recommended dose for patients taking concomitant CYP2C19 inhibitors because of the risk of QT prolongation (see , and ).

Metoprolol - Administration of 40 mg/day citalopram for 22 days resulted in a two-fold increase in the plasma levels of the betaadrenergic blocker metoprolol. Increased metoprolol plasma levels have been associated with decreased cardioselectivity. Coadministration of citalopram and metoprolol had no clinically significant effects on blood pressure or heart rate.

Imipramine and Other Tricyclic Antidepressants (TCAs) - studies suggest that citalopram is a relatively weak inhibitor of CYP2D6. Coadministration of citalopram (40 mg/day for 10 days) with the TCA imipramine (single dose of 100 mg), a substrate for CYP2D6, did not significantly affect the plasma concentrations of imipramine or citalopram. However, the concentration of the imipramine metabolite desipramine was increased by approximately 50%. The clinical significance of the desipramine change is unknown. Nevertheless, caution is indicated in the coadministration of TCAs with citalopram.

Electroconvulsive Therapy (ECT) - There are no clinical studies of the combined use of electroconvulsive therapy (ECT) and citalopram.

Aspirin and extended-release dipyridamole increases the risk of bleeding. Risk factors for bleeding include the use of other drugs that increase the risk of bleeding (e.g., anticoagulants, antiplatelet agents, heparin, anagrelide, fibrinolytic therapy and chronic use of NSAIDs) .

Intracranial Hemorrhage

Gastrointestinal (GI) Side Effects

In ESPS2, the incidence of gastrointestinal bleeding was 4.1% in the aspirin and extended-release dipyridamole group, 2.2% in the extended-release dipyridamole group, 3.2% in the aspirin group and 2.1% in the placebo groups.

Peptic Ulcer Disease

Alcohol Warning

The following adverse reactions are discussed elsewhere in the labeling:

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Reference

This information is obtained from the National Institute of Health's Standard Packaging Label drug database.
"https://dailymed.nlm.nih.gov/dailymed/"

While we update our database periodically, we cannot guarantee it is always updated to the latest version.

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Review

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Professional

Clonazepam Description Each single-scored tablet, for oral administration, contains 0.5 mg, 1 mg, or 2 mg Clonazepam, USP, a benzodiazepine. Each tablet also contains corn starch, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and povidone. Clonazepam tablets USP 0.5 mg contain Yellow D&C No. 10 Aluminum Lake. Clonazepam tablets USP 1 mg contain Yellow D&C No. 10 Aluminum Lake, as well as FD&C Blue No. 1 Aluminum Lake. Chemically, Clonazepam, USP is 5-(o-chlorophenyl)-1,3-dihydro-7-nitro-2H-1,4-benzodiazepin-2-one. It is a light yellow crystalline powder. It has the following structural formula: C15H10ClN3O3 M.W. 315.72

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Interactions

A total of 440 drugs (1549 brand and generic names) are known to interact with Imbruvica (ibrutinib). 228 major drug interactions (854 brand and generic names) 210 moderate drug interactions (691 brand and generic names) 2 minor drug interactions (4 brand and generic names) Show all medications in the database that may interact with Imbruvica (ibrutinib).

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