Three words might pop into your head when you read those three letters together: Gym. Tan. Laundry. That’s thanks to MTV’s hit series “Jersey Shore,” which is now in its third season.

As Jersey Shore’s cast members’ ubiquity soars, “GTL” might change to “GTLS.”

Gym. Tan. Laundry. Supplements.

Everyone wants to look like someone from Jersey Shore, right? (Well, except maybe Snooki. She may be missing the G.) But isn’t every male in America at least subconsciously jealous of the fact that “The Situation” can see his abs?

Supplement companies have long pried on America’s insecurities about its ever-growing waistline, and while the claims they make sound tempting, beware.

There are no federal supplement regulations and very few people spend the time to read and understand the ingredients listed on the label. There’s usually a statement somewhere saying the product’s claims haven’t been evaluated by the FDA.

But hey, it’s your money. So here’s what your favorite Jersey Shore actors are endorsing, along with reasons to buy (or avoid):

The Situation: Mike Sorrentino has become the face of “NOX Edge,” a supplement that promises to “increase the body strength” as well as help you “become the lover of your partner,” among other things.

Plus, the product promises to “trigger a great muscle building exercise which is unparalleled.” What that muscle-building exercise is, however, is anyone’s guess. Maybe it prompts people to immediately start doing pull-ups on the nearest doorframe.

There’s also the protein-infused vodka. But let’s be realistic here: If you’re counting on alcohol to help supplement your daily protein intake, you’re in trouble.

Ronnie: Quite simply, this is one of the most awkward commercials ever made.

And if the commercial isn’t enough, the “studies” that Xenadrine touts are even less credible, as the company claims that those who took Xenadrine “lost an average of approximately” eight to 10 times as much as the placebo group.

If Xenadrine is that successful, then why is the company using Ronnie as a spokesperson?

J-Woww: She started doing promotional appearances for Abdominal Cuts -- a supplement containing fish oil and other fatty acids that claims to promote spot reduction of fat in the abs and hips.

There’s just one problem: Spot reduction isn’t possible. The first person to figure out how to truly spot-reduce will be a billionaire overnight. Yes, some of us are predisposed to carry fat in specific areas, and when you lose fat, you’ll probably lose it from your midsection and your hips. But that’s because it’s being lost all over and not just in those areas.

J-Woww also says she followed the suddenly popular 500-calorie-a-day diet supplemented with HCG drops. But that page on her website is no longer active.

Pauly D: Even the DJ has a supplement combination nicknamed after him: “Pauly D Jacked Stack,” which he supposedly only gets at Xtreme Fitness in Rhode Island.

No, that’s not a typo. In the fitness and supplement world, you can’t spell “extreme” with an “e” at the beginning. But you can see incredible results without touching a single Jersey Shore-endorsed supplement.

Trust us on that one.