what "O"means
Here is a dialog

Could you please tell me what "O" means? Mean ok?

A: How do you feel?
B: I hurt
A: doctor gave you something right?
A; The kid stuff, nothing is with an "o" . I think they were on me

Looking forward to your prompt reply.
Best Regards
Eden

Question

what "O"means
Here is a dialog

Could you please tell me what "O" means? Mean ok?

A: How do you feel?
B: I hurt
A: doctor gave you something right?
A; The kid stuff, nothing is with an "o" . I think they were on me

Looking forward to your prompt reply.
Best Regards
Eden

Answer

The most powerful class of painkillers is the class of opioids - the most famous of which is "oxycodone" / "oxycontin."

So when B (I think the last A should be a B, since this is a conversation) said "the kid stuff, nothing with an 'o'", he is saying that the doctor only gave him a less powerful painkiller, and the name of the drug does not start with an "o" (like oxycodone/oxycontin).