Celexa vs. Lexapro: Key Differences, Side Effects & Which Works Faster
Celexa is citalopram; Lexapro is escitalopram. Both are SSRIs for depression, but Lexapro is the newer, more refined version of the same active molecule.
Patients swap names because “-pram” sounds alike and doctors often trial one after the other. Insurance lists and pharmacy shelves sit them side-by-side, making it easy to think they’re twins rather than parent and child.
Key Differences
Celexa treats depression alone; Lexapro tackles both depression and generalized anxiety. Lexapro works at 10 mg, Celexa at 20 mg. Side-effect odds favor Lexapro—slightly less QT prolongation and fewer drug interactions—though both can flatten libido.
Which One Should You Choose?
If anxiety rides shotgun with your depression, Lexapro wins. On a tight budget, generic Celexa saves cash and still lifts mood. Ask your prescriber to factor heart health, other meds, and insurance tiers.
Which acts faster?
Both need 1–2 weeks for mood shifts, 4–6 for full effect. Lexapro’s lower dose sometimes feels “cleaner” sooner, but the calendar is nearly identical.
Can I switch overnight?
No. Taper Celexa for 1–2 weeks while starting low-dose Lexapro to dodge SSRI withdrawal.