“If people knew the healing power of cannabis, everyone would be growing it in their patios,” says a patient who has found relief from pain.

Lirio Rivera, 62 and a grandmother of five, admits she's an unlikely convert to the virtues of marijuana.

Rivera, who describes herself as a conservative and religious homemaker, grew up believing "mafú" — a word for pot — was a dangerous drug and stayed away from it.

That changed after Rivera found relief from the chronic pain and fatigue caused by fibromyalgia by using capsules containing cannabidiol, or CBD, an active component of marijuana that does not cause a high.

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Sandra Guzman ~ NBCNews.com ~