Cephalexin

Definition

Cephalexin is a first-generation cephalosporin antibiotic used to treat bacterial infections. It works by inhibiting bacterial cell wall synthesis, leading to cell death.

5 Must Know Facts For Your Next Test

1. Cephalexin is effective against Gram-positive bacteria, including Streptococcus and Staphylococcus species.
2. It is commonly prescribed for infections such as respiratory tract infections, skin infections, ear infections, and urinary tract infections.
3. Cephalexin is usually administered orally in capsule or liquid form.
4. Common side effects include gastrointestinal upset, such as nausea, vomiting, and diarrhea.
5. Patients allergic to penicillin may also be allergic to cephalexin due to cross-reactivity.

Review Questions

• What types of bacteria is Cephalexin most effective against?
• List three common indications for prescribing Cephalexin.
• What are some common side effects associated with Cephalexin?

Related terms

Penicillin: A group of antibiotics used to treat a wide range of bacterial infections by inhibiting cell wall synthesis.

Amoxicillin: A broad-spectrum penicillin antibiotic that is used to treat various bacterial infections.

Vancomycin: An antibiotic used to treat serious Gram-positive bacterial infections by inhibiting cell wall synthesis.