Olopatadine Hcl (olopatadine HCl)

Dosage of olopatadine hydrochloride is expressed in terms of olopatadine.

Dosage adjustment for olopatadine nasal spray is not necessary in patients with hepatic or renal impairment.

No dosing information is available for this tab.

Specific drug interaction studies involving olopatadine ophthalmic solution or nasal spray and other drugs have not been conducted to date.

Olopatadine does not inhibit the in vitro metabolism of substrates of cytochrome P-450 (CYP) isoenzymes 1A2, 2C9, 2C19, 2D6, 2E1, or 3A4.

There are no contraindication interactions for this drug.

Severe Interaction: Action is required to reduce the risk of severe adverse interaction.

Agents That Affect Iodide/Radioactive Iodide

SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.

MECHANISM OF ACTION: Many compounds can affect iodide protein binding and alter iodide pharmacokinetics and pharmacodynamics.(1)

CLINICAL EFFECTS: Compounds that affect iodide pharmacokinetics and pharmacodynamics may impact the effectiveness of radioactive iodide.(1)

PREDISPOSING FACTORS: Compounds that affect iodide pharmacokinetics and pharmacodynamics are expected to have the most impact during therapy using radioactive iodide. Diagnostic procedures would be expected to be impacted less.

PATIENT MANAGEMENT: Discuss the use of agents that affect iodide pharmacokinetics and pharmacodynamics with the patient's oncologist.(1) Because indocyanine green contains sodium iodide, the iodine-binding capacity of thyroid tissue may be reduced for at least one week following administration. Do not perform radioactive iodine uptake studies for at least one week following administration of indocyanine green.(2) The manufacturer of iopamidol states administration may interfere with thyroid uptake of radioactive iodine and decrease therapeutic and diagnostic efficacy. Avoid thyroid therapy or testing for up to 6 weeks post administration of iopamidol.(3)

DISCUSSION: Many agents interact with radioactive iodine. The average duration of effect is: anticoagulants - 1 week antihistamines - 1 week anti-thyroid drugs, e.g: carbimazole, methimazole, propylthiouracil - 3-5 days corticosteroids - 1 week iodide-containing medications, e.g: amiodarone - 1-6 months expectorants - 2 weeks Lugol solution - 3 weeks saturated solution of potassium iodine - 3 weeks vitamins - 10-14 days iodide-containing X-ray contrast agents - up to 1 year lithium - 4 weeks phenylbutazone - 1-2 weeks sulfonamides - 1 week thyroid hormones (natural or synthetic), e.g.: thyroxine - 4 weeks tri-iodothyronine - 2 weeks tolbutamide - 1 week topical iodide - 1-9 months (1)

Agents That Affect Iodide/Sodium Iodide I 131

SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.

MECHANISM OF ACTION: Many compounds can affect iodide protein binding and alter iodide pharmacokinetics and pharmacodynamics.(1,2)

CLINICAL EFFECTS: Compounds that affect iodide pharmacokinetics and pharmacodynamics may impact the effectiveness of radioactive iodide.(1,2)

PREDISPOSING FACTORS: Compounds that affect iodide pharmacokinetics and pharmacodynamics are expected to have the most impact during therapy using radioactive iodide. Diagnostic procedures would be expected to be impacted less.

PATIENT MANAGEMENT: Discuss the use of agents that affect iodide pharmacokinetics and pharmacodynamics with the patient's oncologist.(1,2) Because indocyanine green contains sodium iodide, the iodine-binding capacity of thyroid tissue may be reduced for at least one week following administration. Do not perform radioactive iodine uptake studies for at least one week following administration of indocyanine green.(3) The manufacturer of iopamidol states administration may interfere with thyroid uptake of radioactive iodine and decrease therapeutic and diagnostic efficacy. Avoid thyroid therapy or testing for up to 6 weeks post administration of iopamidol.(4)

DISCUSSION: Many agents interact with radioactive iodine. The average duration of effect is: anticoagulants - 1 week antihistamines - 1 week anti-thyroid drugs, e.g: carbimazole, methimazole, propylthiouracil - 3-5 days corticosteroids - 1 week iodide-containing medications, e.g: amiodarone - 1-6 months expectorants - 2 weeks Lugol solution - 3 weeks saturated solution of potassium iodine - 3 weeks vitamins - 10-14 days iodide-containing X-ray contrast agents - up to 1 year lithium - 4 weeks phenylbutazone - 1-2 weeks sulfonamides - 1 week thyroid hormones (natural or synthetic), e.g.: thyroxine - 4 weeks tri-iodothyronine - 2 weeks tolbutamide - 1 week topical iodide - 1-9 months (1,2)

There are no moderate interactions for this drug.

There is no enhanced messaging for this drug.

There are no contraindication contraindications for this drug.

• Nasal septal perforation

• Epistaxis
• Nasal septal ulcers

There is no enhanced messaging for this drug.

Less Frequent

• Nasal septal perforation
• Nasal septal ulcers

Rare or Very Rare

• Increased creatine kinase level

More Frequent

• Dysgeusia
• Epistaxis
• Upper respiratory infection

Less Frequent

• Cough
• Headache disorder
• Urinary tract infection

Rare or Very Rare

• Depression
• Dizziness
• Drowsy
• Fatigue
• Influenza
• Loss of sense of smell
• Parosmia
• Pharyngitis
• Sore throat
• Xerostomia

No enhanced messaging available.

No enhanced messaging available.

Reproduction studies in rats and rabbits receiving oral olopatadine dosages of 600 or 400 mg/kg daily, respectively (i.e., 93,750 or 62,500 times the maximum recommended human ocular dosage, respectively, based on a drop size of 40 mcL, and approximately 1000 or 1400 times the maximum recommended human dose, respectively, for adults on a mg/m2 basis), have not revealed evidence of teratogenicity. However, a decrease in the number of live fetuses was observed in rabbits and rats receiving oral olopatadine dosages of 25 and 60 mg/kg (approximately 88 and 100 times the maximum recommended human dose, respectively, for adults on a mg/m2 basis) or higher. In rats receiving an oral olopatadine dose of 60 mg/kg (approximately 100 times the maximum recommended human dose for adults on a mg/m2 basis), viability and body weights of pups were reduced on day 4 postpartum; however, no effect on viability was observed at a dose of 20 mg/kg (approximately 35 times the maximum recommended human dose for adults on a mg/m2 basis). There are no adequate and well-controlled studies to date using olopatadine in pregnant women, and the drug should be used during pregnancy only if the potential benefits justify the possible risks to the embryo or fetus.

Olopatadine is distributed into milk in rats following oral administration. It is not known whether topical ophthalmic administration of olopatadine could result in sufficient systemic absorption to produce detectable quantities in milk; therefore, olopatadine ophthalmic solutions should be used with caution in nursing women. Olopatadine nasal spray should be used in nursing women only if the potential benefits to the woman outweigh the potential risks to the infant.

No enhanced messaging available.