Jim Cramer uncovers 4 pharma stocks ready to explode

Pharmaceutical stocks fell out of favor after the election and suddenly caught fire again, leaving Jim Cramer to turn to the charts to determine if the pharma rally can continue.

To gain further insight from the charts, Cramer spoke with technician Bob Lang, who has an online blog for picks and analyses.

The pharmaceutical cohort was initially crushed last summer when investors heard about overly aggressive drug pricing, highlighted by Hillary Clinton. When Clinton lost the election, stocks began to rebound.

"This is great news for everyone who feels like they have missed the move, as none of these stocks are historically expensive and almost all can be bought right here, but leave some room in case this remarkable rally ever has a pullback," the "Mad Money" host said.

In fact, Lang thinks sleepy old Pfizer has the best chart of the bunch as the stock has made a series of higher highs and lower lows. The Chaikin Money Flow oscillator, which measures the amount of buying and selling pressure of a stock, is about to turn positive. According to Lang, the last time this happened, Pfizer rallied 20 percent.

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