320 Bolton St


PHONE: 508-485-0801
FAX: 508-485-3308

Keflex, or cephalexin, is a versatile antibiotic often prescribed for a variety of bacterial infections. As a medication in the cephalosporin drug class, it provides a powerful alternative to penicillin-based treatments. The primary uses of Keflex range from treating skin and ear infections to more severe conditions like urinary tract infections (UTIs) and strep throat.

What is Keflex Used For?

What is Keflex used for? This antibiotic is a first-line treatment for several bacterial infections. However, like all antibiotics, it doesn’t treat viral infections like the flu or common cold. The generic name for Keflex is cephalexin, and it’s widely available under this name.

Understanding Keflex Dosage

Getting the correct dosage is crucial for the effectiveness of Keflex. A commonly prescribed amount is Keflex 500 mg, but the exact dosage varies depending on the infection. For instance, keflex for UTI dosage might differ from the amount prescribed for a strep throat infection. Always adhere strictly to your healthcare provider’s instructions to ensure the medication’s effectiveness and your safety.

Side Effects of Keflex

It’s also important to be aware of keflex side effects. These can include symptoms such as diarrhea, nausea, and allergic reactions. If any side effect persists or worsens, it’s crucial to seek medical attention immediately.

Is Keflex Penicillin?

One might wonder, “Is Keflex penicillin?” While Keflex and penicillin are both antibiotics, they belong to different drug classes. It’s worth noting that those allergic to penicillin should take Keflex with caution due to potential cross-reactivity.

Keflex and Alcohol

Another vital consideration is the interaction between Keflex and alcohol. While there’s no direct danger, alcohol can exacerbate side effects like dizziness and nausea, so it’s better to avoid it while on this medication.


In conclusion, Keflex, whether in its brand-name or generic form, is a powerful antibiotic used to treat a variety of bacterial infections. However, like any drug, it must be taken under a healthcare provider’s supervision and in line with their instructions to prevent misuse and ensure optimal results.