DENVER -- A CALL7 Investigation, that showed workers in medical marijuana clinics coaching potential customers on how to obtain a "Red Card," was used in a Denver city council briefing on Monday, where city leaders discussed ways to regulate the booming business.

Right now, in the city of Denver, there are no regulations on medical marijuana clinics and dispensaries and that has some city leaders concerned.

"It's just not acceptable and we need some changes," said State Sen. Chris Romer, D-Denver, after learning of a CALL7 Investigation into medical marijuana.

Using hidden cameras, 7NEWS found people in medical marijuana clinics and dispensaries coaching potential customers on how to obtain a certificate from the state with something as simple as an earache.

At one location, a 7NEWS employee received a recommendation to help build the required medical history. "You can even go to Wikipedia and look up symptoms of migraines and just read 'em off in front of the doctor. Just memorize them and say, 'Ah, it feels like my vision is just tunneling out and three or four times a week I wake up and it still hurts,'" the clinic worker said.

It's angering some people who have a "Red Card" and benefit from the use of marijuana while battling cancer, multiple sclerosis, glaucoma and other serious health conditions.

Several people, with one of the aforementioned conditions and who have medical marijuana cards, contacted 7NEWS and said they are afraid that repeated abuse of Amendment 20 will result in stricter controls that will ultimately prevent them from legally obtaining marijuana.

Romer said that's not going to happen.

"We are the only state to put it in the constitution but we didn't set up a regulatory framework to basically control it," Romer said to CALL7 Investigator Tony Kovaleski.

He talked about other prescription drugs such as OxyContin or Vicodin, which can be abused by someone operating outside of the law, but are also heavily regulated and dispensed by licensed pharmacists.

Medical marijuana is not.

"We need to put a regulatory framework back in place to make sure this controlled substance is used as medicine and not as a recreational drug," said Romer. "People who have multiple sclerosis or cancer or chronic pain... I'm fighting for those people because they should have access to affordable, safe, regulated medical marijuana."

Denver city councilman Charlie Brown agrees.

"I know people that are on it and they swear by it, but they have serious [health] issues," said Brown. "The big problem is there is no clarity on the rules and regulations for anybody. We need to come up with reasonable, rational standards so people can know how to operate their business."

Brown also said Denver is a home-rule city that's shouldn't wait for the legislature to convene and act, but instead move to regulate and tax medical marijuana.

The executive director of SAFER, Mason Tvert told 7NEWS, "We really don't scrutinize any other doctor-patient decisions this closely,"

On its website, the organization Safer Alternative For Enjoyable Recreation, says it "envisions a society where marijuana is treated similarly to alcohol."

"More and more we're seeing evidence that marijuana is one of the best medications for a lot of diseases," said Tvert.

Amendment 20 to the Colorado constitution legalized the use of marijuana for people with "debilitating medical conditions."

When Kovaleski explained to Tvert that a 7NEWS employee had been granted a medical marijuana "Red Card" with an earache, Tvert said, "It's based on a doctor's recommendation and if the doctor or a patient is not being faithful to the law, that's certainly an instance of that."

"I think the intent of the law is to allow doctors and patients to have that discussion and if a doctor, who is a licensed physician, feels that individual will benefit from marijuana they have the right to recommend it and the individual has the right to use it."