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Cyclomydril

Generic: cyclopentolate hydrochloride and phenylephrine hydrochloride

Verified·Apr 23, 2026
Manufacturer
Alcon
NDC
0065-0359
RxCUI
1298068
Route
OPHTHALMIC
ICD-10 indication
H57.03

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About Cyclomydril

What is this medication? Cyclomydril is a prescription ophthalmic solution that combines two active ingredients, cyclopentolate hydrochloride and phenylephrine hydrochloride. This medication is primarily used to induce mydriasis, which is the clinical term for the dilation of the pupil. By widening the pupil, the drops allow eye care professionals to perform detailed internal examinations of the eye or prepare a patient for various surgical procedures.

The medication works through a dual process where one ingredient relaxes the muscles that normally constrict the pupil while the other stimulates the muscles that cause it to open. This combined action provides a more effective and rapid dilation than using either ingredient individually. It is typically administered in a clinical setting by a healthcare professional prior to diagnostic tests like ophthalmoscopy to ensure the physician has a clear view of the retina and other internal structures.

Copay & patient assistance

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Prescribing information

From the FDA-approved label for Cyclomydril. Official source: DailyMed (NLM) · Label effective May 15, 2025

Indications and usage
INDICATIONS AND USAGE For the production of mydriasis.
Dosage and administration
DOSAGE AND ADMINISTRATION 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.
Contraindications
CONTRAINDICATIONS Do not use in patients with hypersensitivity to any component of this preparation.
Warnings
WARNINGS 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.
Adverse reactions
ADVERSE REACTIONS 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.
Use in pregnancy
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.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

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How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.