I'v heard of four categories, if that's what you're after; Depressants, Stimulants, Hallucinogens, and I think the fourth was Painkillers?
Scheduled medication is medication whose prescription is controlled and monitored by the Drug Enforcement Agency. The medications include stimulants like Adderall, benzodiazepines like Xanax, and painkillers like Vicodin and morphine.
No, antibiotics are not stimulants.
Yes inhalants are stimulants because they cause hyperactivity. Therefore they are stimulants.
Stimulants come from, the folks who make them.
Stimulants
Hey You know how made painkillers?
Yes, stimulants (such as coffee) stimulate you.
Stimulants increase alertness.
Stimulants can speed up the heart and make you feel awake.
Yes inhalants are stimulants because they cause hyperactivity. Therefore they are stimulants.
Painkillers do not affect hte contraceptive implant.