The Brazilian president on Thursday thanked the Indian prime minister for allowing the export of raw materials for an anti-malaria drug, touted by some as useful in treating COVID-19.

“We express our thanks to the Prime Minister of India Narendra Modi, who authorized the shipment of inputs for the production of hydroxychloroquine to Brazil after our telephone conversation,” Jair Bolsonaro said on Twitter.

“An honorable gesture that can help save the lives of many Brazilians, and which we will never forget,” the president added.

Hydroxychloroquine is an anti-malarial drug currently studied by experts as a possible treatment of COVID-19.

Read more: Brazil hails India's OK for hydroxychloroquine export