In a message issued on the Anti-Fake News Centre Facebook page, the department said there is no scientific evidence that holy basil offers any protection against the virus.
"Even though some foreign research suggests that orientin in herbs can combat Covid-19 in the human body, these are just initial studies [on a topic] which needs further investigation," the department said.
The department advised people not to eat holy basil every day as this could cause stomach ache.
"We ask people not to share this fake news. They can contact (02) 591 70073 or visit the department's website at www.dtam.moph.go.th for more information," the department added.