The doctors were out of ideas to help 5-year-old Charlotte Figi.
Suffering from a rare genetic disorder, she had as many as 300 grand mal seizures a week and nearly died several times. As a last resort, her mother began calling medical marijuana shops.
Two years later, Charlotte is largely seizure-free and able to walk, talk and feed herself after taking oil infused with a special pot strain.
Her recovery has inspired both a name for the strain of marijuana she takes that is bred not to make users high - Charlotte's Web - and an influx of families with seizure-stricken children to Colorado from states that ban the drug.
But doctors warn there is no proof that Charlotte's Web is effective, or even safe.