What Was Teen Attempting With Heart Drug?

Answers Murky In Prescription Drug Death

After attending a rugby team party where alcohol was plentiful, 16-year-old Joseph Loudon died sometime before dawn May 24. Drinking was a suspected cause of death.

But when the coroner's report came back, Loudon's blood alcohol level was well below the level that constitutes drunken driving.

Instead, the coroner's report said the cause of death was a mixture of alcohol and papaverine, according to a report released last week to the San Francisco Chronicle, or a prescription drug used to treat erectile dysfunction (ED), among other things. The combination of alcohol and papaverine caused Loudon to vomit and choke to death.

In addition to highlighting the pitfalls behind abuse of prescription drugs, the incident also raises questions about why Loudon used the drug in the first place, whether he used it knowingly and whether it was even being used in a way that would deliver the intended effects.

According to Jimmy Lee, a spokesman for the Contra Costa County Sheriff's Department, which includes the county coroner's office, "Whether it was injected or orally taken, we don't know."

The Loudon family declined to speak with ABC News.

Knowledge of how the drug was taken may shed some light on the mystery surrounding Loudon's death.

Papaverine, like morphine and codeine, comes from opium poppy, although it has different effects on the body. It is used to relax muscle tissue and dilate blood vessels, and therefore, it can be used as an erectile dysfunction drug, injected directly into the penises of elderly men with the disorder.

While the drug has been used on blood vessels since before World War II, it received renewed interest when it was discovered in the 1980s that it could help induce erections. However, according to the Food and Drug Administration, the drug has no approved uses.

While papaverine appears in tablet and extended-release capsule forms, those tend to be used for enlarging blood vessels in a hospital setting.

"Papaverine right now is not used very often," said Dr. Tom Lue, a professor of urology at the University of California, San Francisco Medical Center. "I don't even think the tablet form is available as a medical use in the United States."

While oral forms are available for sale online, that is often not the source for teenagers when they abuse prescription drugs, according to Kevin Conway, deputy director of the National Institute on Drug Abuse's division of epidemiology, services and prevention research.

"Probably the primary source kids rely on is their friends," he said. "Kids are not obtaining the drugs very commonly from online sources."

Lue noted that even if men could obtain the tablets, it would not enable an erection.

"It doesn't work for the penis if you take it by mouth. What you do is you will get [the] stomach dilated and you get a bloated stomach," he said.

Other physicians confirmed that assessment.

"I don't know a single [ED patient] who's taking papaverine [in oral form]," said Dr. David Gentile, a urologist with the University of Rochester. "My guess is whoever had this drug did not get it from a urologist."

An Attempt to Start a New Trend?

While suspicions remain that papaverine was used to obtain an erection in this case, it is unlikely that it will replace more commonly used erectile dysfunction drugs such as Viagra, Levitra and Cialis, even as a recreational drug.

"Those are much easier to get, and also, [they're] effective," said Lue.

Gentile said he has also seen a rise in people trying to get erectile dysfunction drugs for recreational use. The drugs may be used to ensure an erection or counter the effects of something like alcohol.

"We have people coming in all the time for those drugs who don't need it," he said.

But he noted that papaverine is more likely to cause some of the unintended side effects.

"It can produce an erection that does not go away," he said, explaining that such an erection can destroy erectile tissue and result in permanent erectile dysfunction.

Among papaverine's potential side effects are nausea and abdominal cramping.

Its abuse remains rare, if nonexistent.

"We have not seen it as a drug that is commonly, or even rarely, misused at all," said Conway. "Most of the prescription drugs that are misused by kids are in the form of pills, and they're primarily the opiate analgesics, like Vicodan. OxyContin is another one."

Without more information, it will remain unclear whether Loudon took the drug voluntarily and why it was taken -- whether to achieve an erection or in the mistaken belief that its origins in the poppy plant meant it had similar effects to prescription opiates commonly abused by teenagers.

Novelty, in this case, may have been part of what led to death.

"Over time," said Conway, "historically, when drugs are misused, the street figures out the best mode and dosage for the maximum effect. Kids take drugs for lots of reasons -- there's risk versus rewards scenarios that they run through in their heads. Kids are wired to take risks, they're wired to try things that are new."

Incomplete knowledge and a wiring for risk often prove a deadly combination.

"There are enormous risks when someone misuses a serious pharmaceutical drug," said Conway. "Kids are often unaware of the risks that they put themselves at."

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