If you are called upon to fill in as a temporary caregiver for a loved one, you will certainly get a list of tasks and times to do daily routines from the regular caregiver. But faced with a pillbox filled with several medications and left with instructions that may be as sketchy as, "Give the round blue pill at 10 a.m. and the white oblong pill at 1 p.m.," mistakes could happen.

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If you're in this situation, you may be able to get more information about what each pill does from the National Institutes of Health pill library website at bit.ly/nih-pills. (The site requires that Adobe Flash be installed on your Web browser.) WebMD features a similar service at bit.ly/webmd-pills.

Enter information about the shape, color, size and any letters imprinted on the pill. If a match is found, you can access extensive information about the drug.