: You must have a prescription from a healthcare provider to obtain medical oxygen tanks or portable oxygen concentrators (POCs).
: A prescription ensures you receive the correct flow rate and therapy settings for conditions like COPD or heart failure. Key Product Types What to Know about OTC Oxygen: Should You Use It? can you buy oxygen over the counter
: Often sold as "canned oxygen," these products are available without a prescription at drugstores like Walgreens and CVS or through online retailers like Amazon . Purity : Typically 90%–95% pure. : You must have a prescription from a
: These products are not FDA-approved or regulated for medical use. can you buy oxygen over the counter