First, I always carry a piece of paper in my purse with a list of every medicine I take, including the over the counter stuff (vitamins, pain reliever, etc), even the "PRN," or sometimes stuff. My list has a column for dosage, and another for reason. The paper also has the name and phone number/fax number of my PCP (internist) and other important doctors and my pharmacy. It all fits on one page, and I have another, tiny copy that fits in my wallet.
For the pills themselves, you can fit them in small pouches you can purchase from the drugstore. I've even seen them in the pharmacy section of Von's/Safeway. They come in a package of 100, and can fit a dozen or so pills of various sizes. Perfect for a pocket, etc. When I am gone a long time I bring a few of these to put the next set of pills in, especially if I need to take them with a meal, and take them with me. The little pouches were only a few dollars when last I bought them.
Fern