Prilosec Vs Omeprazole

What is the difference between prescript Prilosec (omeprazole) and OTC Prilosec (omeprazole)?

Both medicines contain same active ingredient – omeprazole and effectively stops acid production. However prescription Prilosec is used to treat pathological and severe conditions during a longer period of time that require diagnosis and monitoring by a doctor. Prescription Prilosec is also available in doses of 40 mg, and may be used more times a day (max. 3 times a day) depending on problem. Prilosec OTC treats only symptoms of frequent heartburn, and it is only available in dose of 20 mg and should be taken once a day during the maximal of 2 weeks period.

Can omeprazole be bought over the counter?