Upon its release, "Potion" generally garnered a positive reception from
music critics. Paolo Ragusa from
Consequence highlighted Lipa and Young Thug's vocals as well as Harris's production in the song as a demonstration of his competence to "work with any kind of artist to accomplish his vision". Chris Deville for
Stereogum commented that the song "taps right back into the first volume's fun beachside vibe". Starr Bowenbank from
Billboard described the song as "sultry", with Lipa exuding a simmering sensuality, predicting it to be a "sweltering, soon-to-be hit that's primed for dominating party playlists". Katie Bein from the same publication characterised the song as a "summer jam", commenting that it fuses "
Santana vibes with a lounge mood". Alex Gonzalez of
Uproxx labeled the song as "funky", aligning with the "disco and synth-pop sounds of Lipa's
Future Nostalgia" that is "edgy enough to serve as a bridge to her next". Izzy Sigston for
The Line of Best Fit regarded the song to be "the perfect potion for a unwinding on a sticky summer evening".
Maura Johnston of
Rolling Stone believed Lipa and Young Thug to "dissemble the art of seduction" on the song. While Hannah Mylrea from
NME described it as a "sultry, carefree jam", Arwa Haider for
Financial Times labeled the song as "tuneful" and "intoxicating". However, Ben Devlin of
MusicOMH rendered the song as "nice" but opined that it "seems to lack impact". Owen Myers from
Pitchfork viewed the song as Lipa's "weakest [...] underwhelming post-
Future Nostalgia singles". == Commercial performance ==