Cephalexin 500 mg | how to use and Side Effects.


Hi, I'm a pharmacist here today to talk to you about the use of Cephalexin 500 milligram and the side effects associated with this antibiotic.

 What Is Cephalexin?

Cephalexin is a cephalosporin antibiotic. Essentially, it prevents bacteria from properly forming cell walls, causing them to explode or fail to form properly. In the US, it's sold under the brand name Keflex.

Uses of Cephalexin

Cephalexin is used to treat various types of infections, including:

- Respiratory infections

- Ear infections

- Skin infections

- Bone and urinary tract infections

- Prostate infections

- Preventing heart infections

Remember, just because you have an infection doesn't mean Cephalexin is the right antibiotic for you. Your provider will decide based on the specific bacteria causing the infection.

 Dosage and Administration

The dosage of Cephalexin varies based on the type of infection you have. Here are some general guidelines:

- Typically, the standard dose is 500 milligrams two to three times a day.

- Sometimes, doctors may prescribe 250 milligrams four times a day for more consistent levels in the body.

- For certain infections, such as cellulitis and mastitis, the dosage may be 500 milligrams four times a day.

- In some cases, such as before a dental procedure, a larger dose (2000 milligrams) may be prescribed to prevent heart infections.

Doses may be adjusted lower if you have poor kidney function, and your doctor can help determine the right dosage.

 Side Effects of Cephalexin

Cephalexin is generally well-tolerated, but common side effects can include:

- Mild rash

- Vomiting

- Diarrhea

- Nausea

- Headache

- Dizziness

More serious side effects (less common) include:

- Severe swelling in the face or throat (seek medical attention)

- Severe skin rash (requires medical attention)

- Intestinal infections such as C. diff (may require other antibiotics for treatment)

- Changes in blood counts (monitored by doctors)

- Liver issues (monitored by doctors)

- Seizures

 Cephalexin and Alcohol

There is no interaction between Cephalexin and alcohol. However, it is best to avoid alcohol if you have an infection to support your body's immune system.


Thank you forreading my article.  Remember, always contact your doctor if you have any questions or problems about your medications.

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