Also don't necessarily Lexapro to work just like Celexa. Though they share the same basic chemical structure, Lexapro has been altered, and many people do react to them differently.
Hello there,
Effexor is a serotonin-norepinephrine reuptake inhibitor (SNRI). It already do the job of the SSRI's but it acts on the norepinephrine too. Mixing both, especially in high dose, could result in a serotonin syndrome/toxicity. The chance are low with a low 50mg dose of Effexor and starting dose of Lexapro but i see no point in taking both together. I would avoid taking both together and choose one or the other.
Please note that I'm not a doctor but you did say yours wasn't too confident and i am not too confident too. My bet would be to start Lexapro only after complete stop of Effexor.
Best regards,
M4