It broke my heart having to put my minor child on antipsychotics

I tried so hard to avoid medication. My son's dad was bipolar. He killed himself several years back

My son is only 16 but has been showing signs of bipolar for several months now. I really didn't want him to have to be dependent on medication but things got bad. It went from just signs of mania to him violently lashing out. I sat in the guidance counselors office and the guidance counselor literally told me "If you don't do something expulsion is going to be the least of your worries(he was on the verge of getting expelled). Your child is going to end up in jail." I gave in after that. He had a 2 hour long psych evaluation and they diagnosed him with bipolar 2. They prescribed him antipsychotics and maybe it's the word that really breaks my heart. Like my child is psychotic. But I will say. He's chilled out since taking it. The school said he's had a complete change in behavior. So why do I still feel guilty for giving it to him