Cephalexin is a broad-spectrum antibiotic used to fight a wide variety of bacterial infections.

You need to add a PET to your profile before...
Add One Now

You need to add a VET to your profile before...
Add One Now


Cephalexin Basics

Cephalexin is a broad-spectrum cephalosporin antibiotic used to fight bacterial infections all over the body, including upper respiratory infections, skin infections, ear infections, urinary tract infections, or infections found in the bones and joints. It works against bacteria by inhibiting the growth of the bacterial cell wall.

This medication requires a prescription from you veterinarian. It is available in 250mg and 500mg capsules or 125mg/5mL and 250mg/5mL 100 mL suspension bottles.

Cephalexin Directions

Give as directed by your veterinarian and follow all instructions printed on the prescription label. Be sure to complete the prescription to ensure a full recovery, even if your pet seems to be improving, unless instructed otherwise by your veterinarian. If your pet experiences stomach upset, give with food.

Store capsules at room temperature, protected from light and moisture. Store oral suspension in refrigerator after mixing and use within 14 days.

Cephalexin Warnings

Keep out of the reach of children and pets. Do not use in animals with known allergies to penicillin or cephalosporins. Cephalexin may interact with some other medications. Notify your veterinarian if your animal is taking other medications, especially probenecid, furosemide, or warfarin. Use with caution if your pet suffers from kidney disease or intestinal disease. Use with caution if your pet is pregnant or lactating. Cephalexin oral suspension contains sugar and may affect animals with diabetes. If you notice any behavioral or physiological changes in your pet while administering cephalexin, contact your veterinarian immediately.

Allergic Reactions and Serious Side Effects

Allergic reactions are rare, but in the case of an allergic reaction, seek immediate veterinary attention. Some common signs of allergic reactions are severe vomiting, severe diarrhea, blood or mucous in stool, hives, or swelling on or around the face. Do not give cephalexin to any animal that has a known allergy to penicillins and/or cephalosporins. Notify your veterinarian if your pet has diabetes, as cephalexin oral suspension has sugar and may affect your pet’s blood sugar levels. In the case of an overdose of cephalexin, seek emergency veterinary medical treatment. Symptoms of an overdose may include nausea, vomiting, diarrhea, or fever.

If you have any questions regarding this product, please contact us at (877) 220-6337. A member of our pharmacy staff will be happy to assist you!

Additional information


Capsule, Oral Suspension

Prescription Strength

125mg/5mL, 100mL Bottle, 250mg, 250mg/5mL 100mL Bottle, 500mg