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LASTACAFT
Overview
What is LASTACAFT?
LASTACAFT is a sterile, topically administered H receptor antagonist containing alcaftadine for ophthalmic use.
Alcaftadine is a white to yellow powder with an empirical formula of CHNO and a molecular weight of 307.39.
Contains:
Active:
Inactives:
Chemical Name:
H
Structural Formula:
The drug product has a pH of approximately 7 and an osmolality of approximately 290 mOsm/kg.
What does LASTACAFT look like?
What are the available doses of LASTACAFT?
Ophthalmic solution containing alcaftadine, 0.25% (2.5 mg/mL) ()
What should I talk to my health care provider before I take LASTACAFT?
How should I use LASTACAFT?
LASTACAFT is an H histamine receptor antagonist indicated for the prevention of itching associated with allergic conjunctivitis.
Instill one drop in each eye once daily. If more than 1 topical ophthalmic medicinal product is being used, each one should be administered at least 5 minutes apart.
What interacts with LASTACAFT?
Sorry No Records found
What are the warnings of LASTACAFT?
Sorry No Records found
What are the precautions of LASTACAFT?
Sorry No Records found
What are the side effects of LASTACAFT?
Sorry No records found
What should I look out for while using LASTACAFT?
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What might happen if I take too much LASTACAFT?
Sorry No Records found
How should I store and handle LASTACAFT?
LASTACAFT (alcaftadine ophthalmic solution) 0.25% is supplied in an opaque, white low-density polyethylene bottle with a white polystyrene cap. 3 mL fill in 5 mL bottle NDC 0023-4290-03 LASTACAFT (alcaftadine ophthalmic solution) 0.25% is supplied in an opaque, white low-density polyethylene bottle with a white polystyrene cap. 3 mL fill in 5 mL bottle NDC 0023-4290-03
Clinical Information
Chemical Structure
No Image foundClinical Pharmacology
Alcaftadine is an H histamine receptor antagonist and inhibitor of the release of histamine from mast cells. Decreased chemotaxis and inhibition of eosinophil activation has also been demonstrated.
Non-Clinical Toxicology
®Clinically meaningful drug interactions have occurred with concomitant medications and include, but are not limited to the following:
Agents Highly Bound to Plasma Protein:
Carbamazepine is not highly bound to plasma proteins; therefore, administration of Carbamazepine Extended-Release Capsules to a patient taking another drug that is highly protein bound should not cause increased free concentrations of the other drug.
Agents that Inhibits Cytochrome P450 Isoenzymes and/or Epoxide Hydrolase:
Carbamazepine is metabolized mainly by cytochrome P450 (CYP) 3A4 to the active carbamazepine 10,11-epoxide, which is further metabolized to the trans-diol by epoxide hydrolase. Therefore, the potential exists for interaction between carbamazepine and any agent that inhibits CYP3A4 and/or epoxide hydrolase. Agents that are CYP3A4 inhibitors that have been found, or are expected, to increase plasma levels of Carbamazepine Extended-Release Capsules are the following:
Acetazolamide, azole antifungals, cimetidine, clarithromycin(), dalfopristin, danazol, delavirdine, diltiazem, erythromycin(), fluoxetine, fluvoxamine, grapefruit juice, isoniazid, itraconazole, ketoconazole, loratadine, nefazodone, niacinamide, nicotinamide, protease inhibitors, propoxyphene, quinine, quinupristin, troleandomycin, valproate(), verapamil, zileuton.
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Thus, if a patient has been titrated to a stable dosage of Carbamazepine Extended-Release Capsules, and then begins a course of treatment with one of these CYP3A4 or epoxide hydrolase inhibitors, it is reasonable to expect that a dose reduction for Carbamazepine Extended-Release Capsules may be necessary.
Agents that Induce Cytochrome P450 Isoenzymes:
Carbamazepine is metabolized by CYP3A4. Therefore, the potential exists for interaction between carbamazepine and any agent that induces CYP3A4. Agents that are CYP inducers that have been found, or are expected, to decrease plasma levels of Carbamazepine Extended-Release Capsules are the following:
Cisplatin, doxorubicin HCL, felbamate, rifampin, phenobarbital, phenytoin(), primidone, methsuximide, and theophylline
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Thus, if a patient has been titrated to a stable dosage on Carbamazepine Extended-Release Capsules, and then begins a course of treatment with one of these CYP3A4 inducers, it is reasonable to expect that a dose increase for Carbamazepine Extended-Release Capsules may be necessary.
Agents with Decreased Levels in the Presence of Carbamazepine due to Induction of Cytochrome P450 Enzymes:
Carbamazepine is known to induce CYP1A2 and CYP3A4. Therefore, the potential exists for interaction between carbamazepine and any agent metabolized by one (or more) of these enzymes. Agents that have been found, or are expected to have decreased plasma levels in the presence of Carbamazepine Extended-Release Capsules due to induction of CYP enzymes are the following:
Acetaminophen, alprazolam, amitriptyline, bupropion, buspirone, citalopram, clobazam, clonazepam, clozapine, cyclosporin, delavirdine, desipramine, diazepam, dicumarol, doxycycline, ethosuximide, felbamate, felodipine, glucocorticoids, haloperidol, itraconazole, lamotrigine, levothyroxine, lorazepam, methadone, midazolam, mirtazapine, nefazodone(), nortriptyline, olanzapine, oral and other hormonal contraceptives(), oxcarbazepine, phenytoin(), praziquantel, protease inhibitors, quetiapine, risperidone, theophylline, topiramate, tiagabine, tramadol, triazolam, trazodone(), valproate, warfarin(), ziprasidone, and zonisamide.
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Thus, if a patient has been titrated to a stable dosage on one of the agents in this category, and then begins a course of treatment with Carbamazepine Extended-Release Capsules, it is reasonable to expect that a dose increase for the concomitant agent may be necessary.
Agents with Increased Levels in the Presence of Carbamazepine:
Carbamazepine Extended-Release Capsules increases the plasma levels of the following agents:
Clomipramine HCl, phenytoin(), and primidone
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Thus, if a patient has been titrated to a stable dosage on one of the agents in this category, and then begins a course of the treatment with Carbamazepine Extended-Release Capsules, it is reasonable to expect that a dose decrease for the concomitant agent may be necessary.
Pharmacological/Pharmacodynamic Interactions with Carbamazepine:
Coadministration of Carbamazepine Extended-Release Capsules with delavirdine may lead to loss of virologic response and possible resistance to delavirdine or to the class of non-nucleoside reverse transcriptase inhibitors (see ).
Concomitant administration of carbamazepine and lithium may increase the risk of neurotoxic side effects.
Given the anticonvulsant properties of carbamazepine, Carbamazepine Extended-Release Capsules may reduce the thyroid function as has been reported with other anticonvulsants. Additionally, anti-malarial drugs, such as chloroquine and mefloquine, may antagonize the activity of carbamazepine.
Thus if a patient has been titrated to a stable dosage on one of the agents in this category, and then begins a course of treatment with Carbamazepine Extended-Release Capsules, it is reasonable to expect that a dose adjustment may be necessary.
Because of its primary CNS effect, caution should be used when Carbamazepine Extended-Release Capsules is taken with other centrally acting drugs and alcohol.
To minimize eye injury and contamination of the dropper tip and solution, care should be taken not to touch the eyelids or surrounding areas with the dropper tip of the bottle. Keep bottle tightly closed when not in use.
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
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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Interactions
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