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Did you miss last night's "Mad Money" on CNBC? If so, here are Jim Cramer's top takeaways for today's trading.

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Wayfair (W) - Get Wayfair, Inc. Class A Report : In his first exclusive interview, Cramer sat down with Niraj Shah, co-founder and CEO of online home goods retailer Wayfair, which reported a strong quarter but has since seen its stock give back much of the early gains.

Shah said it was a very strong quarter for Wayfair, with new orders up 67% and repeat orders up over 90%. He said Wayfair now employs 450 engineers and continues to keep technology at the core of everything it does.

Shah also commented on Wayfair's expansion into Europe, saying the company is taking a slow and steady approach, but ultimately sees Europe being as big a market as the U.S.

Wayfair is also expanding into the offline world, offering catalogs for the first time to repeat customers as an additional touch point to offer ideas and inspiration.

Shah explained that Wayfair is in a different market than the likes of Restoration Hardware (RH) - Get RH (Restoration Hardware) Report and Williams-Sonoma (WSM) - Get Williams-Sonoma, Inc. Report , which only sell high-end items and have limited selections.

Cramer said Wayfair is performing far better than he would expect given the current economic environment.

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Valeant Pharmaceuticals (VRX) : Cramer has only a handful of rock-solid trading principles that have stood the test of time, but one of them is that accounting irregularities always equal sell. Always.

For another example of that mantra, investors need only look at Valeant, a stock trading over $120 a share back in October but now trades at less than half that amount.

The Valeant scandal started off small, Cramer recalled, but investors who sold on the first reports of questionable accounting and distribution practices were the only ones who came away unscathed. Over the past few months, Valeant shares have been able to to muster a few small rallies, such as after news of a partnership with Walgreens Boots Alliance (WBA) - Get Walgreens Boots Alliance Inc Report in December, but those lifts were all short lived.

Shares only continue to drift still lower, Cramer noted. Hillary Clinton called the company out by name as one of the bad apples in the drug business that she intends to "stop." Cramer said his accounting mantra has never let him down, and Valeant won't be the last time it will save investors money.

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DexCom (DXCM) - Get DexCom, Inc. Report : In his second exclusive interview, Cramer sat down with Kevin Sayer, president and CEO of DexCom, the realtime glucose monitoring company that just posted strong earnings that included a 1-cent-a-share earnings beat on a 55% rise in revenue and strong guidance for 2016.

Sayer said DexCom's recent worldwide product launch was a big stretch for his company, but it executed the plan very well. DexCom's business grew by 55% last year and the company is excelling in both the U.S. and Europe.

When asked about Dexcom's products, Sayer noted that 98% of private insurance now covers constant glucose monitoring. Thanks to a partnership with Alphabet (GOOGL) - Get Alphabet Inc. Class A Report , a stock Cramer owns for his charitable trust, Action Alerts PLUS, the cost of such devices will continue to decline. When it comes to glucose monitoring, Sayer said accuracy matters and DexCom has the most accurate products, which is why it doesn't fear the competition.

Cramer said DexCom is one of the good apples in the health care space and is saving patients and our health care system a lot of money.

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AMN Healthcare (AHS) : For his final interview, Cramer sat down with Susan Salka, president and CEO of AMN Healthcare, a provider of health care staffing services.

Salka said there continues to be a shortage of qualified doctors and nurses in our country and that trend only seems to be getting worse as many health care professionals are nearing retirement age. She said AMN clients are increasingly challenged to find staffing for both their temporary and permanent needs.

AMN is about a lot more than just placement, however. Salka noted that AMN continues to diversify its offerings to include on-boarding, training and other services as more and more facilities are not just looking for professionals, they're looking for leaders and innovators.

Salka added that for AMN, the economy is not the only factor driving the business. She said the aging population continues to be a big driver, as is the consolidation of the health care industry.

Cramer said the time is right for a stock like AMN.

To read a full recap of "Mad Money" on CNBC, click here.

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At the time of publication, Cramer's Action Alerts PLUS had a position in GOOGL and WBA.