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Programming note: Watch “Weed 5: The CBD Craze” Saturday at 9 p.m. ET on CNN.

(CNN) —  

When we released “Weed” in 2013, few people had ever heard of cannabidiol, or CBD. Now, two-thirds of Americans are familiar with the compound, and 1 in 7 have tried it. Most of the country, 93%, are in favor of medical marijuana and hemp-derived CBD itself, which has less than 0.3% THC, has been legalized in every state.

It’s not just public perception. The science over the last six years has grown by leaps and bounds, as well. Epidiolex, a pharmaceutical-grade CBD oil, went through clinical trials and is being prescribed for thousands of patients with seizures. The founder of GW Pharmaceuticals, the maker of Epidiolex, told me they are now developing cannabis medications for everything from autism to anxiety.

The lives of characters we introduced you to in “Weed” have completely changed, as well. The Stanley brothers of Colorado – who literally bet the farm on CBD and couldn’t even afford a reliable car six years ago – now grow CBD on 800 acres in three states and have a marijuana empire worth an estimated $2 billion.

And Charlotte, sweet Charlotte Figi. Soon after birth, she started having seizures. By age 3, she was having 300 seizures a week, despite having tried more than half a dozen medications. Her mother, Paige, worried her daughter would stop breathing one day or go into cardiac arrest. Charlotte was not expected to live past her 8th birthday. Today, she’s 12, and has only two or three seizures a month, despite being off all of her other seizure medications. The only thing she takes is a CBD oil, called Charlotte’s Web. She represents countless patients who are alive today because of this plant, and this plant alone.

For many in the medical marijuana community, these last few years have been the realization of a dream they never really believed was possible. But, there is a funny thing about dreams. As beautiful as they are, they are often fragile and ready to tear at the seams.

Here is where the cannabis story took an awkward, ill-conceived and sometimes ugly turn.

A bold promise, hijacked

Last year, in a single moment, the legislation around CBD, a non-psychoactive component of cannabis, changed. With the passage of the Farm Bill, hemp, defined as any cannabis plant with 0.3% THC or less, became legal to grow, sell, and consume. For the cannabis community, it was like suddenly drinking from a fire hose in the middle of a drought. One day, it was taboo wrapped in decades of stigma, and now it is sold at the corner store.

There are CBD-infused oils, mints, cheeseburgers, vitamin waters, shampoos and even sportswear. Most of this stuff couldn’t possibly offer the human body any benefit. Without the respect of being treated like the medicine it is, or reasonable regulation when it is purchased as a supplement, CBD has been hijacked by unscrupulous actors peddling crooked, corrupt and contaminated products. They’re making a quick buck and disappearing into the ether without a trace.

It was really discouraging to see the results of a recent study in the medical journal JAMA where researchers analyzed 84 CBD products from 31 companies and found 69% were mislabeled. Some of the products had no CBD at all, some had too much CBD, some too much THC.

Others studies showed that some CBD products contained dangerous synthetics that have been responsible for outbreaks of illness all over the country. The legitimate vendors of CBD, who took the time to ensure consistency, safety and quality, are now sadly lumped together with the dishonest and dodgy ones, leaving the consumer confused about where to turn.

The general attitude we have long heard from CBD consumers is they think the product “might help, can’t hurt, why not.” But, when you can’t even count on the authenticity or safety of the product you are buying, that is no longer the case.

In our latest investigation, “Weed 5: The CBD Craze,” we take you on board the cannabis rocket ship, that shot us from a barren wasteland of prohibition to the Wild West of the CBD craze, and we reveal exactly how we got here. We also provide a roadmap to help you navigate the landscape of CBD, including understanding how to read a “certificate of analysis” and determining what is legal and what isn’t.

A story of facts, not faith