Cephalexin is an antibiotic medication that is used to treat bacterial infections. Like all medications, it can cause side effects. Here are some of the possible side effects of cephalexin 500mg:

• Diarrhea: This is the most common side effect of cephalexin. In some cases, the diarrhea can be severe. If you experience diarrhea while taking cephalexin, do not take any medicine to treat it without first checking with your doctor.

• Nausea and vomiting: These side effects can also occur with cephalexin. If they persist or get worse, contact your doctor.

• Skin reactions: Cephalexin can cause serious skin reactions, such as red or purple rashes that turn into blisters or peeling of the skin. If you notice any skin reactions, contact your doctor immediately.

• Allergic reactions: Some people may have an allergic reaction to cephalexin, which can cause symptoms such as skin rash, itching, hives, swelling of the face, lips, tongue, or throat. If you experience any of these symptoms, seek medical attention right away.

• Other side effects: Other possible side effects of cephalexin include abdominal or stomach pain, cramps, or tenderness, headache, and upset stomach. If you experience any other side effects, contact your doctor.

It is important to note that not everyone will experience side effects while taking cephalexin, and some people may experience side effects that are not listed here. If you have any concerns about the side effects of cephalexin, talk to your doctor.