An investigation related to the Mercosur trade agreement has uncovered widespread access to veterinary antibiotics, hormones, and infeed growth promoters across Brazilian states.
It comes as the European Council prepares to vote on the agreement, which would give South American beef farmers access to European markets.
The investigation was carried out by the Irish Farmers' Journal, in conjunction with the Irish Farmers' Association.
Co. Cavan man, Adam Woods is the beef editor of the Farmers' Journal travelled to Brazil.
Speaking on the Joe Finnegan Show this morning, he said they had reservations about standards in the country, and wanted to prove it.
According to Mr. Woods, Irish farmers have "huge hoops to jump through" regarding the administration of veterinary medicine.
He said some medicine is available in Brazil with no proof of requirement.
Mr. Woods said: "In the cases of sepsis, or people who are very sick, a third generation sepsis sporum, which we bought across the counter, is the last line of defence in human health, in order to treat some bacterial infections.
"It's used with great care in this country, to make sure it works, and works into the future. In Brazil it was handed out across the counter with no proof of requirement at all," Mr. Woods added.