Now that Merck & Co. (NYSE: MRK) and Schering-Plough Corp. (NYSE: SGP) both posted better-than-expected second quarter earnings, will investors show some love to big pharma?

Shares of Merck are down about 5% over the past three months while Schering-Plough has eeked out a mere 2.5% gain. Perhaps investors are worried about Merck's Vioxx legal battles, which so far it has largely won, and the controversy surrounding its cervical cancer vaccine Gardisal. Schering-Plough's $14.4 billion acquisition of Akzo Nobel's Oreganon unit may also be concerning some people. Maybe people think that if Pfizer Inc. (NYSE: PFE) is up the creek, all big drug companies are in the same boat.

Regardless, both companies posted impressive numbers that should quell the concerns of investors. Their stocks remain pretty cheap. Merck trades at a forward price-to-earnings multiple of 17, slightly cheaper than Schering-Plough's 20.

Merck, based in Whitehouse Station, New Jersey, reported net income of $1.65 billion or 77 cents, up from $1.5 billion, or 69 cents a year earlier. Revenue jumped 5.9% to $6.1 billion fueled by demand for blockbusters such as the high-cholestoral treatment Vytorin which it makes in a joint venture with Schering Ploug. Excluding some costs, Merck earned 82 cents, beating the 72 cent-average estimate of analysts surveyed by Thomson Financial. The revenue figure also beat the $5.77 billion, analysts had expected.

Vytorin also boosted results at Kenilworth, NJ-based Schering Plough. Net income climbed to $539 million, or 34 cents a share, more than doubling from $259 million, or 16 cents. Revenue jumped 14% to $3.2 billion. Excluding some costs, profit was 41 cents, beating the conesensus forecasts of 35 cents. Revenue also beat expectations of $3.07 billion.