Wow, I never thought I'd see the day: Special K is about to get a makeover! Remember the drug's sleazy clubbing days in the '90s? The highly-addictive drug, called ketamine, started off as a humble animal tranquilizer but worked its ways into the hottest night spots, sending users into an ecstasy that made time stand still -- or, more accurately, into a "dissociative anesthesia" that could lead to a psychotic breakdown.

But here's the latest twist in ketamine's history: It could revolutionize the way depression is treated. I'm not talking your garden-variety blues. This is for real, serious, deep, clinical depression. How could something so toxic for club kids be so helpful for people who are ill?

The details keep rollin' out about what happened to Demi Moore earlier this week, and the situation continues to look bleaker. TMZ has now heard from sources who say that the actress had a seizure brought on by doing whip-its, or inhaling nitrous oxide. Reportedly, Demi was "shaking" and otherwise "acting like she was suffering from a seizure," so a friend who was with her made a call to 911.

Okay, now, I'm not saying I would have preferred to hear that she was actually doing a harder drug, like cocaine or even drinking alcohol. But it is still really bizarre to hear that Demi Moore, as in famous Hollywood actress, is getting high on something typically reserved for high school kids. What the heck??

It seems like only yesterday, Heather Locklear was being called onto the set of the (now canceled) CW Melrose Place reboot to work the same magic she did when the original series' ratings weren't up to par. But today, the actress seems to have a lot more to worry about than being the Superwoman who can save a flailing prime time soap. Yesterday, she was rushed to a hospital in L.A. after her sister dialed 9-1-1.

Thankfully, Heather's whole family seems to be on the scene and her parents have reported that she's "fine," but early reports from TMZ note that the 50-year-old may have overdosed on a "dangerous mix" of prescription drugs (likely Xanax) and alcohol. However, even if that's true, there's more to the story.

The health news for pot smokers just keeps getting better. Last week, researchers released a study concluding that occasional pot users suffered no long-term effects in terms of memory and mental function -- and in some cases actually scored better on memory tests than people who said they didn't touch the potent weed -- when they hit middle age. This week comes more research that'll tickle those who take an occasional toke -- and bring them even more bragging rights, especially over cigarette smokers: According to a long-term study, published in the Journal of the American Medical Association, low to moderate marijuana use has no significant negative effect on users' respiratory health, especially not when compared to regular tobacco use.

Yep, according to the latest research, smoking two or three joints a month isn't nearly as bad for your lungs as puffing your way through eight or nine cigarettes a day.

In a move that will probably freak out anyone who uses an over-the-counter med even occasionally, drugmaker Novartis announced yesterday that they're recalling certain bottles of Excedrin, NoDoz, Bufferin, and Gas-X. Yeesh, that's a lot of drugs, huh? The company issued the recall over concerns that the bottles could contain stray pills from other medicines, or chipped/broken tablets. Wuh-oh ... 

Here are the particulars, if you want to check the bottles hanging around in your medicine cabinet ...

All those potheads you knew back in your late teens and early 20s might just be getting the last laugh. Or at least they might once the thick fog of marijuana smoke has cleared. A new study has shown that 50-year-olds who said they'd occasionally indulged, over the years, in the evil weed and other common recreational drugs, stopping only as recently as sometime in their 40s, suffered no long-term effects in terms of memory and mental acuity.

In fact – here's the really killer part – middle-aged folks who said they either had used or were still occasionally using recreational drugs (mostly marijuana, but also amphetamines, LSD, hallucinogenic mushrooms, cocaine, and ecstasy) in many cases actually tested better for memory and mental function than those who had not used drugs at all. (The advantage was only marginal, but still ...)

Remember the Blair Witch Project? Well, star and filmmaker Heather Donahue is back with a slightly less scary stunt: A memoir about her year growing marijuana titled Grow Girl. Apparently the acting thing didn't work out -- plus that darn PMS kept turning her into a witch month after month. And that's how Heather hooked up with her medical marijuana license to treat her PMS and embarked on the grassy adventure of a lifetime.

Smoke Pot for PMS?!? At first glance that sounds like an EXCELLENT solution. Yes, we should definitely look into that. Sign me up for that medical study! But when I really think it through (while sober), I have to admit that maybe it's not for me.

Surprise, surprise! The former head of the FDA, David Kessler, has said that Bayer, the company that manufactures creeptastic birth control pills Yasmin and Yaz, reportedly withheld company research involving increased reports of blood clots in its pills' users ... all the way back in 2004. The drug company "presented a selective view of the data, and that presentation obscured the potential risks associated with Yasmin."

It's no wonder the company is now facing more than 10,000 lawsuits, which claim Bayer didn't warn patients of the health risks of the Yasmin and Yaz birth control pills. They're also in trouble for marketing the drug for unapproved uses, like PMS and acne.

While troubling, it's not like we didn't already know these drugs present a higher risk ...