HRP and medications?

Hello recently started a job and they do not allow controlled substance use. The medication I am subscribed by my doctor MD PC is a controlled substance, (Ritalin also known as Methylphenidate).
I stopped taking it immediately before my start date. I also reported it on my equip, but when meeting with security before submitted the gal had me remove it.

I can take it or leave it but was wondering what the policy is regarding the HRP program?

Have an appointment with a company doc this week and will also discuss this with them.