Is it possible to change Venlafaxine to Fluoxetine overnight?

Unfortunately, in such a situation, you have to wait until the side effects disappear (this usually happens spontaneously). It is worth informing the attending physician about their occurrence - perhaps he will decide to modify the treatment.

I just changed venlafaxine 32.5 mg to fluoxetine 10 mg overnight. I take it the second day and I feel terrible,I am so dizzy that I am not even able to go to the store. What should I do to help myself?

This rule applies to changes in both directions, i.e. SNRIs for SSRIs can also be changed overnight.

This question is about the opposite situation. A colleague wrote about changing the drug fluoxetine to Venlafaxine. And I ask whether in the opposite direction Venlafaxine to Fluoxetine can be overnight or in some other way. That is, replacing SNRI with SSRIs. Thank you in advance and best regards