Children's Panadol is being pulled from shelves, with the national drug regulator warning batches contaminated with invisible fibres could prompt allergic reactions.

Three batches of strawberry and orange flavoured Panadol for children aged five to 12 years, supplied in 200ml bottles, are being recalled from pharmacies and wholesalers by manufacturer GlaxoSmithKline Consumer Healthcare Australia.

The Panadol is contaminated by invisible fibres.

The Therapeutic Goods Administration said in a statement on Thursday that an ingredient in the medicine "may have been contaminated with small particles that could contain trace minerals and inert fibres."

"If this occurs, there is a very low risk of allergic reaction and there is also potential for the medicine to be less effective over time."