He added that his government is tracking vaccine studies being carried out worldwide.
Lopez Obrador said he would sit for 20 minutes after receiving the jab, as recommended by a healthcare worker who administered the shot to the president on live television and social media.
"It didn't hurt," Lopez Obrador said. "Right now I'm feeling very good."
Mexico's health regulator said earlier this month that it did not plan to limit the use of the two-shot AstraZeneca vaccine, but was looking into information from Britain's vaccine advisory committee.
The committee has said an alternative to AstraZeneca should be given to people under 30 where possible.
Mexico began vaccinations late last year and has so far fully inoculated nearly 4 million people, most of whom are adults over 60, out of a total population of 126 million.
Reuters