Ritalnol Eye Drops (Olopatadine Hydrochloride)

Adult eye dose

Instill 1 drop twice a day (every 6–8 hours). Treatment may continue for a maximum of 4 months if necessary.

This medication should not be used by patients with allergies to the active ingredient or any other components of this product. Rarely, neurological symptoms such as headache or dizziness may occur when using this medication. Ophthalmic side effects such as punctate keratitis, eye pain, eye itching, or eye redness may also occur, so caution is advised. Nasal dryness or rhinitis symptoms may develop. Dry mouth or skin adverse reactions such as dermatitis have been reported rarely. Additionally, the use of this medication may increase eye hypersensitivity or lead to systemic symptoms such as fatigue, nausea, and pharyngitis. This medication is a non-sedating antihistamine and may temporarily blur vision after use; therefore, it is advisable to wait until vision clears up before driving or operating machinery. If effectiveness is not observed after prolonged use, it is recommended to discontinue further use. The benzalkonium chloride component contained in this product can cause eye irritation and discoloration of contact lenses; therefore, contact lenses should be worn at least 15 minutes after instillation. It is advisable to avoid wearing contact lenses when the eyes are red. The safety of this medication during pregnancy has not been fully established; therefore, it should be used cautiously under a doctor's guidance. In nursing mothers, this medication may be excreted into breast milk, so consulting a physician before use is advisable. The safety and effectiveness for children under 3 years of age have not been established, hence it should be avoided in this age group. For elderly patients, it can be used without specific dosage adjustment. This medication is for local ophthalmic use only. Avoid direct contact between the container tip and the eye area, and ensure the container is tightly closed after use to prevent contamination. When using with other eye drops, use with an interval of at least 5 minutes, with eye ointment being administered last. This medication should be stored away from direct sunlight in a cool place and kept out of reach of children.

Serious side effects

• Jaundice
• increased blood pressure
• difficulty urinating

Mild side effects

• Headache
• taste disturbance
• dizziness
• punctate keratitis
• keratitis
• eye pain
• dry eyes
• eyelid swelling
• eye itching
• eye discharge

This medication is sensitive to light and should be stored in a specific container that does not allow light to enter. It is also important to store it at a cool room temperature between 4 to 25 degrees Celsius to maintain its effectiveness.

Appearance

A colorless to pale yellow solution in an opaque white plastic container for eye drops

Package unit

For domestic use - 6 milliliters/bottle