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Cephalexin User Reviews & Ratings

Brand names: Keflex

Cephalexin has an average rating of 6.4 out of 10 from a total of 499 reviews on Drugs.com. 52% of reviewers reported a positive experience, while 28% reported a negative experience.

Reviews for Cephalexin

  • Leena
  • February 17, 2021

For Bladder Infection "Reading these reviews prior to taking this scared me. I had to call my urgent care's aftercare department and local pharmacy a million times before actually taking it. Let me tell you... IT WAS GREAT! I have a history of anxiety and panic attacks, and I especially get nervous taking new drugs. I'm a 23-year-old female that is completely healthy. I got a minor UTI from being in the pool and was prescribed Cephalexin 500mg for 7 days. I had panic attacks the first few days after taking it because of my FEAR of taking the drug and especially after reading these crazy reviews. After my 5th dose, I was completely fine. I finally calmed down and realized that it was legit my anxiety. I actually had no real side effects from this antibiotic, thank God! My infection cleared, and I feel great. I hope this eases someone's anxiety. I wish I had read something like this before taking it. Stay well, everyone!!"

10 / 10
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263 Report
  • lhano
  • Taken for less than 1 month
  • April 12, 2020

Keflex (cephalexin) for Bladder Infection "I have suffered with urine infections on and off for years and was always given Macrobid or trimethoprim which never cleared it up for long or completely, and also gave me severe side effects. A new doctor started me on Keflex and it has cleared it up properly - very minimal side effects if any."

10 / 10
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165 Report
  • Herma...
  • Taken for less than 1 month
  • September 2, 2019

Keflex (cephalexin) for Bladder Infection "I started with a bladder infection on Sunday. I was urinating every 10-15 minutes, and it was so painful and I felt a lot of pressure. I called the doctor, and I was put on Bactrim on Monday night. The Bactrim gave me the spins, constipation, and anxiety. It was a nightmare! After 5 doses of Bactrim, my infection kept getting worse. I called the doctor, and they switched me to Keflex. I started the Keflex at 9 pm, and in less than 24 hours, I felt much better. No side effects except a little bit of nausea and dizziness, so remember to eat when you take it. It is a miracle drug for urinary infections and bladder infections."

10 / 10
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156 Report

Frequently asked questions

  • LadyM...
  • March 10, 2013

For Bacterial Infection "I've seen patient reviews where many terrible side effects of this drug were listed. After that, I was afraid to start taking Cephalexin! But my pharmacist said Keflex has been on the market for decades & most people have no problem with it. I'm happy to report that I am one of those people! The only side effect I am having is a lot of smelly gas & very smelly bowel movements (a result of the bad bacteria dying off, perhaps?). But that's a small price to pay to get rid of the infection in my ankle, so I'm quite satisfied. Word to the wise: I think that most of the patient reviews we see online are from unsatisfied patients. Most people that have no problem with a medicine probably don't take the time to post, so keep that in mind."

9 / 10
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248 Report
  • Ann
  • Taken for less than 1 month
  • November 1, 2019

For Upper Respiratory Tract Infection "I'm 68 years old and went to an urgent care because my doctor was on vacation. I knew I had bronchitis and an upper respiratory infection. I know after all these years if I have an infection or a cold or flu. I was also a pharmacy tech. A nurse practitioner said I just had flu symptoms and wouldn't give me an antibiotic. Why oh why don't some young doctors in the medical field believe in antibiotics? What generation has died from antibiotics? I had waited an hour to get in and she told me I had the flu. I was in so much pain from deep coughing and demanded to see another doctor. I said I'm not leaving without some kind of antibiotic and that I knew the difference between the flu and an infection. They finally gave me amoxicillin. It didn't work for me this time (it usually works for sinus and ear infections). I went to my doctor and she gave me Keflex. This is great for bronchitis. I'm so upset at these young doctors who don't believe in antibiotics. People will end up in the hospital or worse. It's a disgrace!"

10 / 10
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125 Report

Are you taking this medicine?

  • Anonymous
  • Taken for less than 1 month
  • June 11, 2012

Keflex (cephalexin) for Bacterial Infection "I was prescribed Keflex (Cephalexin) after having surgery to prevent infection, and wanted to add to the list of side effects. They do not mention acid reflux, which I had every time I took the capsule (4 times a day, for 10 days). Also women need to take a probiotic while on this medication as it decreases natural flora and you can get a yeast infection. I learned this the hard way by not eating enough yogurt while on this medication and not taking any probiotics. Just wanted to give a heads up and hopefully spare many women this highly uncomfortable experience."

5 / 10
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226 Report
  • Shedoc
  • Taken for 10 years or more
  • April 26, 2017

Keflex (cephalexin) for Bladder Infection "I have a double whammy: I have interstitial cystitis (which feels like a constant bladder infection), and on top of that I'm prone to actual bladder infections. I've learned to be able to tell the difference between a bladder infection and a cystitis flare-up. I have a lot of drug allergies and cannot take sulfa drugs or Cipro, which are commonly prescribed for bladder infections. Keflex has been the only antibiotic that I can take that doesn't give me any side effects and gets rid of the infection. It's saved my bacon on numerous occasions. I also prophylactically take Acidophilus orally to avoid yeast infections. It all works like a charm. I have NEVER had a bad side effect from Keflex."

10 / 10
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145 Report

More FAQ

  • Stef
  • Taken for less than 1 month
  • May 2, 2021

For Bacterial Infection "Just took the final dose. I am praying I will feel like myself again. I slept the first 4 days ( 15 hours at a time). Day 5 Mild to moderate to paralyzing anxiety and depression ( I am on anti anxiety medication , I take an antidepressant daily ) By day 7, intense headache that didn’t respond to Acetaminophen I am crying as I feel confused, and have insomnia. I hope the person that simply posted insults here gets the help they need . Prayers for a person who enjoys being rude for a hobby. NO ONE has the right to SHAME ALL who post here. ONLY a very sad soul BULLIES those (including me) that post voluntarily and in a clear, concise manner here. Taking time and effort to post side effects and symptoms of an antibiotic can be a valuable tool for those who may not realize why they are feeling bad. We live in an era that knows “ it’s in your head “ is fodder for an ignorant person."

3 / 10
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75 Report
  • All...
  • Taken for less than 1 month
  • February 25, 2014

Keflex (cephalexin) for Skin or Soft Tissue Infection "I had recurring boils in one area. They would show up randomly so the dr. was never able to take a culture since they would come to a head and then pop whenever. He put me on a 20-day regimen of Keflex (500) and another ointment antibiotic that he told me to dab into my nose. He said for some odd reason, boils seem to start in the nose. I followed the instructions and had a minor recurrence several months later. I went immediately to see him so he put me back on Keflex. These boils were clustered and leaving scars in the area. They haven't recurred and the scars are gone. Since I caught them starting the 2nd time, they never had a chance to come to a head because I stayed on top of it. I highly recommend it for a skin bacterial infection."

9 / 10
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  • Lindsay...
  • July 21, 2014

For Bacterial Infection "I came down with a bad urinary tract infection 3 days ago, and I was put on Bactrim twice a day. I have had several UTIs before, and it has worked in the past. However, this time around, 2 days after the medicine, I wasn't seeing improvements, so I went back to the doctor and switched to cephalexin. Last night was my first dose, and I woke up this morning feeling completely normal again. I like to read these reviews, so I figured I'd post this to let everyone else know. Cephalexin works well."

9 / 10
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172 Report
  • Fatima
  • Taken for less than 1 month
  • June 6, 2020

Keflex (cephalexin) for Bladder Infection "So I ended a Saturday at the ER, I ended up having a urinary infection a severe one. The PA prescribed Keflex 500 mg 7 Days - it really helped after 2 days but I noticed that it does bring out side effects on myself. I feel nauseous, tired, agitated, eyes feel hot, headaches even though I took 2 Advil it was still there. I also feel super anxious, I been having mood swings, I feel more sad and somehow more depressed than I’ve have been in the past. And I still have one more day to go"

8 / 10
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84 Report
  • eisheth
  • Taken for less than 1 month
  • March 27, 2020

Keflex (cephalexin) for Bladder Infection "I was prescribed Keflex twice a day for 7 days for UTI but I only lasted 4 days. Before I took this medication I had some anxiety, but no other mental health issues besides my ADHD. The 2nd day I took it I became psychotic. I was severely depressed, paranoid, convinced everyone was talking about me or working against me. I cried all day. My mind was racing & convincing me of all kinds of delusions about myself & those around me. I was having vivid disturbing nightmares. I couldn’t eat anything. Constantly felt like I was going to vomit & slept from the time I got home from work until the next morning when I got up for work. I have been on antibiotics before, but this was my first AND LAST time I will ever take this."

1 / 10
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85 Report
  • Anonymous
  • May 9, 2011

Keflex (cephalexin) for Bladder Infection "It helped in getting rid of my bladder infection, but I was out in the sun for half the day doing some work outside, and I got horribly burnt and a bad sun rash. So just try to avoid the sun while on this medication."

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  • Tano
  • Taken for less than 1 month
  • August 21, 2019

For Bacterial Infection "Prescribed cephalexin 500mg four times daily for seven days. On day three and infection is almost completely gone and feel 10 times better than have in a month. No side effects what soever. Only wish had went and started earlier."

10 / 10
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90 Report
  • Zilla...
  • February 17, 2019

Keflex (cephalexin) for Bacterial Infection "I was prescribed 500mg (Keflex) four times a day, for ten days. This was for a boil that I've had for eight years, I thought it was a pimple but when it got worse then ever I saw a doctor who confirmed it as a boil which then proceeded to try lancing and squeezing it I almost become unconscious this is how bad it has become. Anyways you are here for the drug review, the only side effect that I noticed was a slight tired feeling. I have anxiety so I didn't take the pills until around a week after being prescribed for a fear of side effects, there is nothing to be worried about trust that it will help you. Now my boil is completely gone and I can relax."

9 / 10
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94 Report
  • Vegas...
  • July 2, 2014

Keflex (cephalexin) for Skin or Soft Tissue Infection "Got multiple venomous spider bites on the left buttocks. Turned into a staph infection. Before taking the medicine, I was in so much pain I could barely sit or lay down. Been on the medicine for two days now at 500mg twice a day (along with Epsom salt baths) and it has already GREATLY improved my infection, the sores, and my ability to sit!"

8 / 10
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145 Report
  • LuvNa...
  • October 15, 2019

Keflex (cephalexin) for Bacterial Infection "My Endodontist put me on Keflex (Cephalexin) 500 mg per day 4 X per day for a bacterial infection for a root canal that had to be retreated. I was skeptical as I often cannot finish antibiotics due to the awful side effects. I am very sensitive to medicine. This one has had no side effects for me. With that being said, I do take a probiotic (florajen) several hours before taking Keflex. The probiotic is taken 1 x per day while on antibiotics and is found in the pharmacy as it has to be refrigerated. No prescription is required for probiotic."

10 / 10
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80 Report
  • MMano
  • Taken for less than 1 month
  • March 15, 2021

Keflex (cephalexin) for Bladder Infection "Had a really bad UTI and was prescribed Keflex. I have a lot of anxiety when it comes to taking medications. I take Keflex with Zofran just as a precaution and also with food before I take it. No side effects besides some gas here and there. After taking the first dose my UTI symptoms started to go away within the first five or so hours. Keflex is always my go to when I have a UTI, it works so well!! Also after taking a pill I drink about 32oz of water with it"

10 / 10
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56 Report
  • shiva...
  • December 31, 2015

For Bladder Infection "My symptoms: Strange pain at the tip of the urethra (only at the end of my urination) and a sudden increase in the frequency of urination. Treatment: After three days of pain, I went to the doctor. She recommended cephalexin twice a day for 7 days (plus plenty of water!). Effects: Pain started to reduce within 2 days. Frequency is reducing slowly. This medicine definitely works!"

8 / 10
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114 Report
  • Texas...
  • September 17, 2015

For Bladder Infection "I get UTIs every other month due to an autoimmune disease. Nothing works well for me except Cephalexin 500 mg by Lupin, two per day for 5 days. No side effects at all, but some reviews here list 4 times daily. I wouldn't ever take that much because it isn't necessary for me."

10 / 10
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111 Report
  • Payton
  • Taken for less than 1 month
  • July 14, 2021

For Bacterial Infection "Yes this drug has side effects and yes they suck BUT I will say it works amazingly. Just like all of you reading I did the same and got scared but overall I have a REALLY BAD infection on my foot and it’s been about 3 days on the meds and my foot has already stopped swelling, isn’t red anymore, and pain has gone down a lot. If you are prescribed this med do not be scared it works. And again yes side effects suck, I got bloating, gassy, and nauseous. But I’d rather deal with these side effects then loosing my foot! Please take it if you need to and I really hope this helps."

10 / 10
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47 Report
  • Dee...
  • Taken for less than 1 month
  • April 12, 2016

For Bladder Infection "I felt a UTI along with blood in my urine coming on right after I returned from vacation and contacted my doctor at 8 am. He prescribed me Cephalexin 500mg, 1 pill 3 times a day. I started at 10 am and by the end of the day, the blood was gone and the pain substantially subsided. I'm still having the urination urges, but I'm on the meds for 10 days total. I'm pretty confident it's gonna get the job done completely. I hate UTIs and don't get them frequently, but if I get another, I definitely would take Cephalexin again."

9 / 10
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101 Report
  • hi5
  • Taken for less than 1 month
  • October 30, 2012

Keflex (cephalexin) for Bacterial Infection "I had an abscess on my upper gum resulting from terrible dentist work. I had also been prescribed amoxicillin 500mg; however, after a week of taking amoxicillin, the pain/swelling did not go away, it got noticeably worse. However, after taking my first full dose of Keflex, swelling reduced and gradually faded out by the time my dosage was complete. Would highly recommend Keflex."

10 / 10
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131 Report
  • rinda...
  • February 17, 2009

Keflex (cephalexin) for Bladder Infection "I usually never have side effects from antibiotics, but I had moderate dizziness and nausea. The nausea is not bad enough to send me to bed all day, but it does interfere with my daily schedule and leaves me extremely worn out and fatigued. It is frustrating. I have to take it four times a day for ten days."

3 / 10
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  • all...
  • Taken for less than 1 month
  • March 23, 2014

Keflex (cephalexin) for Skin or Soft Tissue Infection "I had to take a double dosage of Keflex. I weigh about 115lbs and had to take Keflex 500mg 4 times a day for 10 days. I didn't have any issues with side effects or drinking alcohol while on it. It was prescribed as a precaution after I accidentally got a cut on my leg that required 13 stitches. The only dissatisfactory attribute was the horrid sulfur smell of the capsules."

9 / 10
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109 Report

Reviews may be edited to correct grammar/spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest are not published. This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge, and judgement of healthcare professionals.