Age causes changes in our bodies, including a change in the way we respond to prescription drugs. Drugs work by causing subtle changes in body chemistry. When prescription drugs are present in the blood in the right amount, they produce the desired effect. Age doesn't usually have any effect on absorption, but the distribution of drugs in the bloodstream can change as the body alters with age. As a person ages, there's less blood flow to the liver, making it less efficient in metabolizing drugs. Many other organs and organ systems also become more sensitive to drug effects. It's important to discuss with your doctor any side effects you may experience from your medications. If you take more than two drugs on a regular basis, keep track of how often and what time of day you take them. Keep all drugs in their original containers. That way, they will remain properly labeled and can be easily reordered. Always keep drugs out of the reach of children and throw out any drugs you're not using. It's also recommended that you store drugs in a cool, dry place, since most drugs deteriorate rapidly in the presence of heat. If you've more questions about your medications, ask your doctor or pharmacist.