Mydfrin (Phenylephrine Hydrochloride)

Name: Mydfrin
Brand: Alcon
SKU: 7217
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Mydfrin

Manufacturer: Alcon

Country: Canada

Dosage: 2.5 %/5 ml

Qty-Price (USD):

Generic Equivalent of Mydfrin

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

There is no generic product of Mydfrin.

Mydfrin Information

Mydfrin at CanadaPharmacyOnline.com

Alcon manufactures brand-name Mydfrin (phenylephrine hydrochloride). It is available in several countries worldwide, including Canada.

There is no generic equivalent of Mydfrin.

Dosage:

Mydfrin is available in the following strength and form:
• Ophthalmic Solution: 2.5%, in 5 mL bottles.

For pupil dilation, 1 drop is typically instilled into the eye, repeated at 3- to 5-minute intervals as needed, up to a maximum as directed by your doctor.

Usage:

Mydfrin is an eye drop used to dilate (enlarge) the pupil temporarily. It is commonly used during eye examinations to allow an eye care professional to examine the inside of the eye, including the retina. It may also be used before certain eye procedures or to help manage certain eye conditions, such as inflammation inside the eye. Do not use Mydfrin for routine home treatment of minor eye redness or irritation.

Mechanism of Action
Phenylephrine hydrochloride, the active ingredient in Mydfrin, is an alpha-1 adrenergic receptor agonist. It stimulates receptors on the smooth muscle of blood vessels in the eye, causing them to constrict and reducing the redness associated with minor irritation. At the same time, phenylephrine stimulates the dilator muscle of the iris, causing the pupil to widen, which is useful for eye examinations and certain procedures where a dilated pupil is needed.

Use Mydfrin exactly as your doctor prescribes, according to the product monograph. Wash your hands thoroughly before application. Pull down the lower eyelid to form a small pocket and instill 1 drop without touching the dropper tip to your eye or skin. Immediately after instillation, close your eye gently and press your finger against the inner corner of the eye (near the bridge of your nose) for 1 to 2 minutes. This step prevents systemic absorption of the medication into your bloodstream, reducing the risk of high blood pressure and cardiac side effects. Do not use this medication while wearing contact lenses, as it can temporarily impair your vision. Wait at least 15 minutes after applying the drop before reinserting soft contact lenses. Be careful if you have to drive or do anything that requires clear vision right after use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before starting Mydfrin, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below outlines potential side effects of Mydfrin (phenylephrine). It is not an exhaustive list, and individual reactions can vary.

Common side effects: These are common side effects of Mydfrin; other side effects are possible. Contact your doctor promptly if any side effects are persistent, worsening, or concerning, or if you experience any other concerning symptoms.
• Brow ache
• Sensitivity to light
• Stinging upon instillation
• Temporary blurred vision

Serious Side Effects: Seek immediate medical attention or call emergency services if you experience any of the following symptoms:
• Anxiety, buzzing in your ears, or severe headache.
• Chest pain or pressure, or a fast or irregular heart rate.
• Pale skin, light-headedness, sweating, or tremors.
• Shortness of breath.
• Severe allergic reaction: rash, itching, or swelling of the face, tongue, or throat.

Contraindications:

The following is not an exhaustive list of contraindications. Before starting Mydfrin, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Do not use Mydfrin if:
• Allergies: You have a known hypersensitivity to phenylephrine hydrochloride or any other ingredient in the solution.
• Narrow-Angle Glaucoma: Dilating the pupil can trigger an acute, sight-threatening angle-closure glaucoma attack.

Tell your doctor about all of your medical conditions, past and present, before starting Mydfrin. This is crucial as certain conditions affect the drug's safety.
• A History of Stroke or Aneurysm.
• Diabetes or Thyroid Problems.
• Heart Disease, High Blood Pressure, or an Irregular Heartbeat.

Drug Interactions:

Before using Mydfrin, discuss all potential risks and interactions with your doctor or pharmacist. For complete, up-to-date information, please refer to the product monograph at https://pdf.hres.ca/dpd_pm/00058755.PDF.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, herbal supplements, recreational drugs, and any significant dietary changes, as these may interact with Mydfrin. Mydfrin may interact with other medicines, including but not limited to:
• Monoamine Oxidase (MAO) Inhibitors or Tricyclic Antidepressants: These can significantly increase the blood pressure-raising effects of phenylephrine, potentially leading to a severe hypertensive crisis.
• Other Medications That Affect Blood Pressure or Heart Rate: Tell your doctor about any heart or blood pressure medications you take.

Pregnancy and Breastfeeding:

It is not known how Mydfrin could affect an unborn or nursing baby. Talk to your doctor if you are pregnant, planning to become pregnant, or breastfeeding.

Use in Children:

Mydfrin may be used in children under a doctor's supervision, most often for pupil dilation before an eye exam; the lower 2.5% strength is generally preferred over higher concentrations in children because it carries a greater risk of systemic side effects.

Frequently Asked Questions about Mydfrin at Canada Pharmacy Online

Why is Mydfrin more affordable in Canada than in the United States?

Prescription drug prices, including Mydfrin, are generally lower in Canada than in the U.S. due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower prices than in the U.S., where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to offering you the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Is there a limit on how many Mydfrin I can order at once?

CanadaPharmacyOnline.com can dispense multiple units of Mydfrin per order, since it is an over-the-counter product.

Can I buy Mydfrin from you over the counter?

Yes, Mydfrin does not require a prescription from your doctor. We sell this product over the counter.

Do you ship to the United States?

Yes, we do. It usually takes between 7 and 18 business days to receive your order from our pharmacy.

Is there a generic for Mydfrin?

No, the generic equivalent of Mydfrin is currently unavailable (at this pharmacy).

Blog Post:

The Truth About Cholesterol in 2026: What Really Matters for Your Heart

Latest News:

New eye drop formulation shows promise for dry eye disease (article published May 21, 2026)

Similar Drugs in the category of Eye Care:

Restasis Lotemax Simbrinza Prolensa Nevanac

The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

Reviews From Real Customers