Cyclomydril

Description for Cyclomydril

CYCLOMYDRIL® (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution) is a mydriatic prepared as a sterile topical ophthalmic solution. The active ingredients are represented by the chemical structures:

Established name: Cyclopentolate Hydrochloride
Chemical name: 2- (Dimethylamino) ethyl 1-hydroxy- α-phenylcyclopentaneacetate hydrochloride

Established name: Phenylephrine Hydrochloride
Chemical name: 3-hydroxy -α [(methylamino) - methyl]-, Benzenemethanol, hydrochloride (R)-.

Each mL contains : Active: cyclopentolate hydrochloride 0.2%, phenylephrine hydrochloride 1%. Preservative: benzalkonium chloride 0.01%. Inactives : edetate disodium, boric acid, hydrochloric acid and /or sodium carbonate (to adjust pH), purified water.

Uses for Cyclomydril

For the production of mydriasis.

Dosage for Cyclomydril

Instill one drop in each eye every five to ten minutes. To minimize systemic absorption, apply pressure over the nasolacrimal sac for two to three minutes following instillation. Observe infants closely for at least 30 minutes.

HOW SUPPLIED

CYCLOMYDRIL® (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution) is supplied as a sterile solution in 2 mL and 5 mL, in plastic DROP-TAINER® dispensers.

2 mL NDC 0065-0359-02
5 mL NDC 0065-0359-05

Storage

Store at 8°C to 25°C (46°F - 77°F)

Distributed by: ALCON LABORATORIES, INC., 6201 South Freeway, Fort Worth, Texas 76134-2099. Revised: May 2025

Side Effects for Cyclomydril

Ocular

The following ocular adverse experiences have been associated with the use of CYCLOMYDRIL (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution): increased intraocular pressure, burning/irritation upon instillation, photophobia, blurred vision and superficial punctate keratitis.

Nonocular

Use of cyclopentolate hydrochloride has been associated with psychotic reactions and behavioral disturbances in children. These disturbances include ataxia, incoherent speech, restlessness, hallucinations, hyperactivity, seizures, disorientation as to time and place. This drug produces reactions similar to those of other adrenergic and anticholinergic drugs; however, the central nervous system manifestations as noted above are most common. Other manifestations of adrenergic and anticholinergic topical ophthalmic drugs include tachycardia, hyperpyrexia, hypertension, vasodilation, urinary retention, diminished gastrointestinal motility, convulsion, bradycardia, apnea, necrotizing colitis and abdominal distention (in newborns and especially premature infants), skin rash, drowsiness, and decreased secretion in salivary and sweat glands, pharynx, bronchi and nasal passages. Severe manifestations of toxicity include coma, medullary paralysis and death. Systemic toxicity can result from topical application of sympathomimetic drugs: headache, blood pressure elevation, extrasystoles, tachycardia, syncope and cerebrovascular accidents have been reported.

Drug Interactions for Cyclomydril

No information provided.

Warnings for Cyclomydril

FOR TOPICAL OPHTHALMIC USE ONLY. NOT FOR INJECTION. There have been reports of serious cardiovascular reactions, including ventricular arrhythmias and myocardial infarctions, in patients using higher concentrations of phenylephrine. These episodes, some fatal, have usually occurred in patients with pre-existing cardiovascular diseases. This preparation may cause central nervous system (CNS) disturbances. This is especially true in younger age groups, but may occur at any age, especially with the stronger solutions. Infants are especially prone to CNS and cardiopulmonary side effects from cyclopentolate.

Mydriatics may produce a transient elevation of intraocular pressure.

Precautions for Cyclomydril

General

Caution should be observed when considering use of this medication in the presence of Down's syndrome due to potential increased sensitivity to anticholinergics. This product should be used with caution in patients at risk for angle closure due to the potential to precipitate acute angle closure. Because of the risk of provoking hyperthermia, use with caution in patients, especially children, who may be exposed to elevated environmental temperatures or who are febrile. The use of phenylephrine in the eye may liberate pigment granules from the iris. Mydriatics may produce a transient elevation of intraocular pressure..

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, Impairment Of Fertility

There have been no long-term studies done using cyclopentolate hydrochloride and/or phenylephrine hydrochloride in animals to evaluate carcinogenic potential.

Pregnancy

Animal reproduction studies have not been conducted with cyclopentolate hydrochloride and/or phenylephrine hydrochloride. It is also not known whether cyclopentolate hydrochloride and/or phenylephrine hydrochloride can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. CYCLOMYDRIL (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution) should be given to a pregnant woman only if clearly needed.

Nursing Mothers

It is not known whether these drugs are excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when CYCLOMYDRIL (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution) is administered to a nursing woman.

Pediatric Use

Use of cyclopentolate has been associated with psychotic reactions and behavioral disturbances in pediatric patients. Increased susceptibility to cyclopentolate has been reported in infants, young children, and in children with spastic paralysis or brain damage. These disturbances include ataxia, incoherent speech, restlessness, hallucinations, hyperactivity, seizures, disorientation as to time and place. Feeding intolerance may follow ophthalmic use of this product in infants. It is recommended that feeding be withheld after administration, and to observe infants closely for at least 30 minutes (see PRECAUTIONS).

Geriatric Use

No overall differences in safety or effectiveness have been observed between elderly and younger patients.

Overdose Information for Cyclomydril

ExcExcessive dosage may produce behavioral disturbances, tachycardia, hyperpyrexia, hypertension, elevated intraocular pressure, vasodilation, urinary retention, diminished gastrointestinal motility and decreased secretion in salivary and sweat glands, pharynx, bronchi and nasal passages. Pulmonary oedema or cardiac arrest may occur due to phenylephrine toxicity. Severe intoxication is characterized by central nervous system depression, coma, circulatory and respiratory failure, and death. Patients exhibiting signs of overdosage should receive supportive care and monitoring.

Contraindications for Cyclomydril

Do not use in patients with hypersensitivity to any component of this preparation.

Clinical Pharmacology for Cyclomydril

Cyclopentolate hydrochloride is an anticholinergic drug and phenylephrine hydrochloride is an adrenergic drug. This combination induces mydriasis that is greater than that of either drug alone at its respective concentration. The concentrations of cyclopentolate hydrochloride and phenylephrine hydrochloride have been selected to induce mydriasis with little accompanying cycloplegia. Heavily pigmented irides may require more doses than lightly pigmented irides.

Patient Information for Cyclomydril

Do not touch dropper tip to any surface, as this may contaminate the solution. Patient should be advised not to drive or engage in hazardous activities while pupils are dilated. Patient may experience sensitivity to light.