Dozens of prescription drugs faced a price hike this week in a round of raises from pharmaceutical giant Pfizer. The affected drugs include blood pressure pills Norvasc, the painkiller Lyrica, the anti-smoking drug Chantix, the lung cancer medication Xalkori, and the erectile dysfunction drug Viagra. Combined with a previous hike this year, many drugs' prices have now jumped by double-digit percentages. (Source: Ars Technica; Image: Xalkori.com)