Side effects and what to tell your vet

• Stomach upset (vomiting, diarrhoea, reduced appetite) can happen. Giving tablets with a small amount of food often helps. Ask your vet first.
• Liver enzyme (ALT) rises are common on blood tests and usually temporary.
• Injections can sting, and repeated injections can cause skin sores. Tell your vet if you see any.
• Folded ears and brittle whiskers have been reported with molnupiravir, and hair loss with both main antivirals.
• Bladder stones have rarely been linked to unregulated injectable products.

Call your vet if

• A dose is vomited or missed: ask before giving another
• Your cat stops eating, becomes weaker, or has trouble breathing
• New wobbliness, seizures or eye changes appear
• You notice anything that worries you

Record side effects in the daily check-in so you can show your vet exactly when they happened.