Cephalexin Dog Asthma Medication | Petco

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My dog was diagnosed with pemphigus foliaceus on Thursday she also had 106 fever. Prescribed 20mg Prednisone and 500mg Cephalexin 2xs a day each. She had diarreah this morning, vet said tsp yogurt with each meal and then she vomited 3 times since 2:3
Hello. Cephalexin is a very common antibiotic used in pets & usually does not cause a problem, but your dog may indeed have a sensitivity to it. I am glad you held off giving the medication this evening, but I would try it again tomorrow morning about 30 minutes after she eats. If she holds it down, great but if she vomits then your veterinarian will need to prescribe another antibiotic on Monday if necessary. Continue the steroid as this is the more important medication. Thanks for using Boop by Petco.
Updated on September 24th, 2025
Health & Wellbeing
On Saturday, I took my dog to see our vet. He was prescribed two medications for allergies. The medications are called Prednisone and Cephalexin. After taking these medications, I have noticed that he has been super sleepy, slow and not very active.
Lethargy and altered behavior are pretty typical side effects of prednisone. Along with this you may also see things like increased drinking, urinating, and eating. Long term side effects can include liver damage and commencement of certain diseases of the endocrine system. Cephalexin is an antibiotic that has the main side effect of gastrointestinal upset. If you decide that you do not think the prednisone is worth using due to the side effects, do not discontinue it abruptly. It has to be tapered down slowly as to prevent any harm to Kaiser. Hope this helps.
Updated on September 24th, 2025
Health & Wellbeing
What’s the difference in cephalexin and simplicef
Cephalexin and Simplicef are both cephalosporins, so they are the same group of antibiotics, but cephalexin is the generic name for a 1st generation cephalosporin and Simplicef is a trade name for Cefpodoxime which is a 3rd generation cephalosporin (so it is a newer drug) and works better in some circumstances. Here is more information on both drugs. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=538 https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=2038 I hope that was helpful! Thanks for using Boop by Petco.
Updated on September 24th, 2025
Health & Wellbeing
My other dog Is on cephalexin 500mg for a ear/skin allergy/infection. But KC (16lbs) accidently got the cheese wrapped pill and ate it even though I tried to make her spit it out. Is she going to be okay??
Hi there and thank you for using Pet Coach to address your concern. At the high end of the dose of 60mg/kg for systemic infections, it would be approximately 436mg every 8 hours for that dose for a 16lb dog. A 500mg capsule will not likely cause any life threatening problems. You may see vomiting and diarrhea but this should resolve on its own. If you start to see neurological symptoms such as seizures or a wobbly gait, I would have a veterinarian examine KC. I hope this helps! Please let me know if you have any other questions or concerns and I would be happy to help further.
Updated on September 24th, 2025
Health & Wellbeing
My dog is taking prednisone and cephalexin together. He is panting a lot with no exertion, has a lighter brown colored stool and is pooping more than usual. No loss of appetite. Are these normal symptoms?
Thanks for using Boop by Petco! Prednisone is a steroid. Steroids cause pets to eat more, drink more, urinate more, and pant. The increased stool could be if he is eating more but antibiotics, like cephalexin, can cause loose stools. I suspect the signs you are seeing is because of the medications. If you notice any vomiting or diarrhea please let the veterinarian that prescribed the medications know. Kisses to Cooper!
Updated on September 24th, 2025