I have a round orange pill with apo 300 imprinted on one side, what is it?

APO 300 calles up either a Nizatidine Capsule or a Lithium Carbonate capsule. Neither one is considered a "pill." My bet is that you have the Lithium. it is a flesh colored capsule and could be described as "orange."

NIZATIDINE (Axid®) is a type of antihistamine that blocks the release of stomach acid. Nizatidine is used to treat gastric and duodenal ulcers.

Lithium carbonate 300 mg:
Each flesh-colored capsule, size No. 2, imprinted APO 300, contains: lithium carbonate 300 mg, useful in preventing or diminishing the frequency of subsequent relapses in bipolar manic-depressive patients

Look. Enough. Dogs eat ufo's (unidentifed floor objects.) Humans say no to unidentifed pills that are floating around their environs. Just say no to potential death and keep it out of your mouth.

I am taking that exact same pill, round orange apo/300 it is penicillin, taking it for Step throat at the moment.

It's Lithium 300 mg.

I believe it is a penicilin or antibiotic usualy prescribed by a dentist, however I am not sure at all.

That's a Antibiotic pill with penicilin prescribebd by dentist i know i currently take that for 10 days

My friend gave me those same pills for sleep. She told me that they were Lithium pills. However, I have the same shape capsules only white w/ 112 on them and they are Neurontin/Gabapentin. That's all the help I can provide.