All of the patents for prescription Prilosec® (omeprazole) capsules have expired and there is currently a generic version of the medication available. Generic Prilosec is available in 10 mg, 20 mg, and 40 mg capsules.
Even though prescription Prilosec is not technically interchangeable with Prilosec OTC, many healthcare providers will recommend that people take the Prilosec OTC rather than the prescription Prilosec (or generic Prilosec) because the over-the-counter medication is cheaper.
(Click Generic Prilosec for more information on generic Prilosec, including a list of the different manufacturers of generic Prilosec.)