Online skin consultations across Canada for CA$175.

Acyclovir prescribed online

Acyclovir is an oral antiviral for cold sores, genital herpes and shingles. It works best when started early. A Canadian-licensed medical professional reviews your case and decides if it is right for you.

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At a glance

  • Oral antiviral (acyclovir)
  • For cold sores, genital herpes and shingles
  • Works best when started early

Why Modern Dermatology

  • Canadian-licensed medical professionals, 100% online
  • Prescriptions sent to your pharmacy or delivered
  • Follow-up and refills through your Care Team

Used forCold soresGenital herpesShingles

For shingles near the eye, in people with a weak immune system, or with severe pain, fever or confusion, seek in-person care at once. Seek emergency care for an allergic reaction.

Choosing the right dose for you

Your clinician decides the amount and the length of treatment. It depends on the infection, your kidney function and your health. Follow the pharmacy label.

Considerations include

  • Which infection you have
  • How early you start treatment
  • Your kidney function
  • Past outbreaks and how often they come
  • Other medicines you take

How Acyclovir works

Acyclovir stops the virus from copying itself

Herpes viruses spread by copying their genetic material inside your cells. Acyclovir is turned into an active form only in infected cells. There it blocks the enzyme the virus needs to copy itself.

With less virus made, the outbreak is shorter and milder. Acyclovir does not remove the virus from nerve cells.

A close-up of skin textureHands apply lotion from a white pump bottle

Recommended for

  • Cold sores
  • Genital herpes outbreaks
  • Shingles
  • Repeated outbreaks, when your clinician advises
  • People who want fast prescription access

Your clinician reviews your skin and history, and confirms that this treatment is right for you before prescribing.

  • Blocks viral copying

    Stops the virus from spreading

  • Shortens outbreaks

    Healing comes sooner

  • Eases pain and itch

    Symptoms settle faster

  • Targets infected cells

    Little effect on healthy cells

How it works.

  1. 01
    A woman takes a selfie of her skin with her phone

    Tell us about your skin

    Complete a quick medical questionnaire and upload a few photos of your skin concerns. No appointment needed.

  2. 02
    A smiling doctor in a white coat

    Get your personalized treatment plan

    A Canadian-licensed medical professional will review your information and recommend a personalized treatment plan, including prescriptions when appropriate. Most conditions can be assessed without a video consultation.

  3. 03
    Hands apply lotion from a white pump bottle

    Start your treatment

    Get your prescribed medications delivered right to your door. Medication costs are billed separately from your consultation.

  4. 04
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    Follow up on your progress

    At a follow-up, your clinician can review your progress, discuss side effects and adjust your treatment if needed.

Clear answers.

Have more questions? See our full FAQ or Contact us.

Still have questions? Reach our care team at 514 111 1111

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Acyclovir becomes active only inside cells that hold the herpes virus. There it stops the virus from copying itself. This helps outbreaks end sooner.

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Simple pricing for your skin care.

Medication costs are separate. Ask your insurer whether your plan reimburses online consultations.

Skin assessment

  • Medical questionnaire and photo review
  • Personalized treatment plan
  • Prescription when appropriate

CA$175

per consultation

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Related treatments

Your clinician can suggest another option when this one is not the right fit.

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Where clear skin begins.

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Start my assessment