Hi, I'd like to help you with your question.
Prozac is a drug that is used to increase the amount of serotonin (feel good chemicals) in your brain. It is a SSRI, selective serotonin reuptake inhibitor.
Prozac can be taken in a pill, as a delayed release drug or as a solution (liquid). This drug should begin working at full capacity within 4 to 5 weeks. That is when the drug becomes full strength in your system.
It is normal to feel different or even worse on a drug you are just starting. Your body is adjusting so it takes time. You may be experiencing side effects without the full benefit of the medication in your body. This will make you feel worse. But once the full amount of medication is in your system, then the side effects will lessen and you will feel better.
If you start to feel severe side effects or cannot function on the medication, then contact your doctor to discontinue it. It is very common to need to try several medications before you find one that works for you. Everyone's body chemistry is different so one medication does not work for all people. That is why is it ok to keep trying until you find what works for you.
Be sure you follow your doctor's orders on how to discontinue Prozac. It can cause you to feel worse if you do not taper this medication.
I hope this has helped you,