Get Relenza Treatment Online

Need a Relenza refill? Our licensed physicians can review your influenza history and renew your zanamivir prescription quickly and securely, without an in-person visit.


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What Is Relenza?

Relenza (zanamivir) is a prescription medication used to manage influenza A and B infection. It works by inhibiting neuraminidase, an enzyme influenza viruses use to spread from infected cells to healthy ones, thereby limiting viral replication and reducing the duration of illness. With the right dose and ongoing monitoring, most patients experience meaningful symptom relief when treatment is started within 48 hours of symptom onset.

  • Inhaled antiviral that targets influenza A and B by blocking viral neuraminidase
  • Get personalized guidance from doctor-trained AI
  • Explore treatment and prescription options

Is Online Relenza Treatment Right for You?

To qualify for a Relenza refill, you must have a confirmed or prior documented history of influenza for which zanamivir was previously prescribed, and your symptoms or recurrence must be consistent with your original diagnosis. Patients with reactive airway disease or chronic respiratory conditions such as asthma or COPD should discuss their history carefully, as Relenza carries a risk of bronchospasm in these populations and close physician review is required before a refill is issued.

  • Diagnosed with influenza A or B by a healthcare provider
  • Get personalized guidance from AI and clinicians
  • Explore treatment and prescription refill options
  • Access care from home, often the same day
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Diagnosed with influenza A or B Fever 100.4°F or higher with flu onset Experiencing body aches, cough, or fatigue Need a prescription refill Adults 18+ in any U.S. state

How Influenza Treatment Works at Doctronic


Chat With The #1 AI Doctor

Doctronic answers your health questions with personalized medical insights and helps our doctors create a better treatment plan for you.


Meet With a Licensed Doctor For Treatment

Book a $39 telehealth appointment (or copay) within 30 minutes. Our doctors create personalized treatment plans with prescriptions when needed.


Pick Up Your Prescription

Our doctors prescribe non-controlled medications in all 50 states and send prescriptions to your pharmacy for same-day pickup.

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What a Doctronic consultation looks like

Free to start, no account needed. Here's how a real Influenza consultation unfolds.

Describe your symptoms

Type what you're feeling — no forms, no dropdowns.

Free · No account needed

AI asks the right questions

Built by doctors to rule out serious conditions first.

Doctor-trained AI

Get your assessment + next steps

Instant clinical assessment — then connect to a doctor if needed, no repeating yourself.

$39 doctor visit · All 50 states

Pricing that won't make you sick

Chat for free, see an online doctor for $39/visit, or refill a prescription online for as low as $0

  • Network Icon Available in all 50 states + DC
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  • Prescription refills Starting as low as $0
  • Video visit with real doctors $39/visit
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These are stories from real users who turned to Doctronic for answers when it mattered most.

  • Preparing for a doctor visit
  • Finding peace of mind
  • Understanding a diagnosis
  • Managing chronic illness
  • Navigating healthcare
  • A second opinion
  • Improving health

Frequently asked questions

Relenza is an inhaled antiviral medication approved for the treatment of acute uncomplicated influenza A and B in patients who have been symptomatic for no more than 48 hours. It is also approved for prevention of influenza in certain situations.

Relenza is inhaled orally using a breath-activated Diskhaler device. The standard treatment dose is two inhalations of 5 mg each, twice daily for 5 days, for a total daily dose of 20 mg. Your physician will confirm the correct technique and dosing schedule for your situation.

Relenza is generally not recommended for patients with underlying airway disease such as asthma or COPD because it carries a risk of serious bronchospasm. If you have one of these conditions, your prescribing physician must weigh the risks carefully and a bronchodilator should be available during treatment.

Yes. Zanamivir is active against both influenza A and influenza B viruses by inhibiting the neuraminidase enzyme that both virus types require to replicate and spread within the respiratory tract.

For maximum effectiveness, Relenza should be started as soon as possible and ideally within 48 hours of the first appearance of flu symptoms such as fever, body aches, or cough. Starting treatment after this window is generally less effective.

Common side effects reported with Relenza include diarrhea, nausea, nasal signs and symptoms, bronchitis, cough, headache, and dizziness. Serious but rare reactions include bronchospasm and allergic reactions. Contact your provider if you experience difficulty breathing after inhalation.

Doctronic uses an AI-guided evaluation to gather your symptom history and medication information, which is then reviewed by a licensed physician. If a refill is appropriate, the physician issues a treatment plan and prescription without requiring an in-person visit.

Yes. Doctronic connects patients with licensed physicians whose decisions are doctor-reviewed and audited for clinical quality. The platform is HIPAA-compliant, and your health information is handled with strict privacy protections.