Watson 387 vicodin5 mg of Acetaminophen-hy. Brand names include Lortab, Vicodin and Zydone. . . . . Best Answer: Yes, what you have heard is right! People misunderstand how dangerous acetaminophen can be. What milligram Vicodin are Watson 387? ChaCha Answer: The pill with 'Watson 387' imprinted on it is 750 mg/7. . View images and comprehensive medicine information. Too much can shut the liver down in a minute! Advise that . They aren't just benign fakes--they have some sort of upper in them .... more