Favipiravir: uses, side effects & brands

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed 5 November 2026

Favipiravir was used for mild-to-moderate COVID-19 in some countries. It belongs to the COVID-19 antiviral group. These reduce the severity of COVID-19, working best when started early in high-risk people.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	COVID-19 antiviral
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Mild-to-moderate COVID-19 (approved for a time in India and some other countries)
Certain new or drug-resistant influenza outbreaks (approved in Japan)
Used only under medical supervision

Common brand names

India: FabiFlu, Favipir, Coviflu
Worldwide: Avigan

Common side effects

Raised uric acid levels
Diarrhoea
Raised liver enzymes
Nausea

Before taking it — precautions

Must not be used in pregnancy because it can cause birth defects; both women and men should use reliable contraception
Avoid while breastfeeding
Tell your doctor about gout, high uric acid or liver disease

When to see a doctor urgently

Severe allergic reaction: swelling of face or throat, difficulty breathing (urgent)
Hot, painful, swollen joint (gout flare)
Worsening breathlessness or yellow skin and eyes (urgent)

Not a prescription — no dose shown. The right dose of favipiravir depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.

Frequently asked questions

Is favipiravir still recommended for COVID-19?

Evidence of benefit was weak, and many current guidelines no longer recommend it. Ask your doctor about newer options.

Is it safe in pregnancy?

No. It is known to harm the unborn baby and must not be used if you are or could become pregnant.

Why is my uric acid checked?

Favipiravir raises uric acid in many people, which can trigger gout in those prone to it.

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Sources & further reading

Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.