Cephalexin (Keflex) Coupons & Prices

Looking for a cephalexin coupon? Cephalexin is a widely used generic antibiotic, and because it is already available as a low-cost generic, you often do not need a coupon to keep the price down. The catch is that the cash price for the same prescription can vary a lot from one pharmacy to the next. Enter your ZIP above to see today's cephalexin price and compare across more than 60,000 pharmacies near you, so you pay the lowest available cash price with or without insurance.

What is cephalexin and how does it work?

Cephalexin is a first-generation cephalosporin antibiotic in the beta-lactam family. It works by stopping bacteria from building their cell walls, which kills the bacteria causing an infection. It is FDA-approved to treat a range of infections caused by susceptible bacteria, including respiratory tract infections such as strep throat and tonsillitis, ear infections (otitis media), skin and soft-tissue infections such as cellulitis and impetigo, bone infections, and genitourinary infections including some urinary tract infections. It is also used before certain dental or upper-respiratory procedures to help prevent heart-valve infection (endocarditis) in penicillin-allergic patients at risk.

Cephalexin only works against bacterial infections. It will not treat viral illnesses such as the common cold or the flu. As with any antibiotic, take the full course exactly as prescribed even if you feel better early.

Cephalexin cost and how to save without insurance

Cephalexin is a generic drug (the brand name Keflex has largely been discontinued), so it is generally one of the more affordable antibiotics to fill. Even so, the cash price is not the same everywhere. Two pharmacies on the same street can list very different prices for the identical prescription, which is exactly why comparing before you fill matters.

Rx.com compares live cash prices across more than 60,000 pharmacies so you can find the lowest one near you. Enter your ZIP above to see today's price, then show the coupon at the pharmacy counter. There is no manufacturer savings card for generic cephalexin, and you do not need one to get a low cash price. Rx.com's coupon can be used whether or not you have insurance, and it is worth checking the cash price even if you are insured, since it is sometimes lower than a copay.

Cephalexin alternatives and related antibiotics

Cephalexin is the generic form of Keflex. Your provider chooses an antibiotic based on the type of infection and your medical history, so alternatives are not interchangeable, but other commonly prescribed antibiotics include:

• Amoxicillin and doxycycline, used for many respiratory, skin, and other common infections
• Cefdinir and cefuroxime, other cephalosporin antibiotics
• Clindamycin, often used for certain skin and dental infections, including in some penicillin-allergic patients

If your prescriber writes you a different antibiotic, you can compare its price on Rx.com the same way. Never switch antibiotics on your own; talk with your provider or pharmacist.

Cephalexin safety and side effects

Cephalexin has no boxed warning, but there are important safety points to know. It should not be used by anyone with a known cephalosporin allergy. In people with a penicillin allergy, the risk of cross-reactivity with cephalexin is small; the once-quoted figure of about 10% is now considered an overstatement, and current allergy guidance puts the overall risk at roughly 1% or less. One nuance matters, though: cephalexin shares a similar chemical side chain with amoxicillin and ampicillin, so extra caution is warranted specifically if you have had a reaction to those particular drugs. Tell your provider about any penicillin or other antibiotic allergy so they can weigh this. Like other antibiotics, cephalexin can cause Clostridioides difficile-associated diarrhea that ranges from mild to serious, and this can appear even up to two months or more after you stop the medicine, so report persistent or severe diarrhea to your provider. Prolonged or repeated use can lead to a new (superinfection) infection.

People with reduced kidney function may need a dose adjustment, and seizures have been reported, mainly in that setting. Cephalexin may make hormonal birth control less effective and can cause false-positive results on some urine glucose tests and a positive Coombs test. This is general information, not medical advice. Tell your provider about your allergies, kidney health, and other medicines, and follow their guidance.