Schedule i: requires prescription for sale & provides by pharmacist, sale is controlled in a regulated environment. Schedule ii: less strictly regulated, require professional intervention at point of sale & referral, prescription is not required, behind the counter, no public access, no patient self-selection, bth sold at pharmacy. Schedule iii: available w/o prescription, over the counter, sold from self-selection area of pharmacy, pharmacist is available to assist patient in making selection, otc but sold at pharmacy. Schedule u: sold without professional supervision, patient can make safe & effective choice, may be sold from any retail outlet doesn"t have to be sold at pharmacy. Naloxone hcl injection/nasal spray for emergency use for opioid overdose. Omeprazole sold for 14 days treatment for heartburn in 20mg. Potassium salts in oral preps containing no more than 5mmol/dose. Acetaminophen sr >650mg/tab, more than 50 tabs/pack. Esomeprazole (nexium) 14-day treatment, 20mg/tab, no more than 280mg/pack size. Ibuprofen immediate release as 400mg/tab; modified release as 600mg/tab.