Has anyone had a serious side effects while taking Prozac even high heart palpitations?

With many ssrI and maoi, heart palpitations can be common, and exexaggerated greatly with stimulant usage such as caffeine.

Allergic reactions are less common, though I do not feel comfortable providing a reliable comment on that.

My best advice would be to swap meds. With me, and I'm sure many others, finding the right medicine, specifically with anti depressants is a game of trial and error, very tedious and frustrating at times but when you find the right med/s, it's worth it.

I wish you the best of luck

You have to give this med time..I had bad anxiety attacks when I first took it..but I figured I couldn't feel any worse then what I was feeling..into my 6th week I started to feel the depression and anxiety lift
.I'm 4 months into this med and I feel great! I'm on 80mg prozac a day

Absolutely. You can expect this over a 2-3 weeks period, although it should begin to subside during that time.

Started with feeling peculiar like I wanted to cry all the time for 2 weeks followed by hypermania and delusions for 2.5 weeks. Dreams were incorporated as real memories then it dumped me in a pit of anxiety and suicidal ideation that lasted till the next one (SSRI) gave me constant anxiety attacks and the third one where I was going to be sectioned under the mental health act due to insane panic attacks/agoraphobia.

Happy New Year! I haven't had high Palos but I am not really sure what's side effects or just anxiety!

I have had skipping heart beats, rapid pulse on Prozac as well as other SSRI's and SNRI's. Never had any OTHER serious side effects on it except for the heart which was enough for me. You may need to to adjust your doseage or consider paxil which is less of a problem with the heart pounding.