What Should I Avoid While Taking Cefalexin?

Cefalexin is a commonly prescribed antibiotic used to treat many bacterial infections. 

While cefalexin can be an effective treatment for many illnesses, there are certain things you should avoid while taking it in order to maximize its effectiveness and reduce the risk of side effects. 

In this article, we will discuss what to avoid while taking cefalexin so that you can get the best results from your treatment.

Table of Contents

What Exactly Is Cefalexin?

Cefalexin (cephalexin) is a type of antibiotic that belongs to the group of cephalosporins. Cefalexin is commonly prescribed to treat a range of infections, such as chest infections like pneumonia, urinary tract infections (UTIs), and skin infections. 

This antibiotic comes in tablet or liquid forms for those who find swallowing tablets difficult. Cefalexin can only be obtained with a valid prescription from your doctor.

Cefalexin is an excellent choice for treating bacterial infections due to its ability to disrupt the process of creating a bacterial cell wall. 

This antibiotic works by blocking the ability of bacteria to create the walls that help them grow and survive. 

It is approved for use in adults over the age of 18, but can also be used in children that are older than 1 year old.

What Do You Need to Know About Cefalexin?

When taking cefalexin, it is important to follow your doctor’s instructions carefully; not finishing all the medication prescribed can lead to bacterial resistance and will not fully resolve your infection. 

Additionally, this antibiotic may not work for viral infections such as colds and flu so it is best to speak with your doctor before starting any medication. 

As with any medication, side effects such as the ones mentioned in this research here, discuss the likelihood of things like vomiting, abdominal pain, diarrhea, and headaches which can occur when taking cefalexin but these should subside after stopping the medicine. 

Who Can Take It, and Who Should Take It?

Cefalexin is a type of antibiotic that can be taken by both adults and children. It works to effectively treat many types of bacterial infections, including urinary tract infections and strep throat. 

This medicine is generally taken as a capsule or tablet once daily and should not be taken more than twice daily without speaking to your doctor first. Cefalexin is usually well-tolerated, but there are some people for whom it may not be suitable or safe for use.

Allergic Reactions

It’s vital to communicate with your doctor if an allergic reaction has occurred with cefalexin previously or if you have had kidney problems, as these could affect how the medication works for you. 

Additionally, those who have ever had skin peeling, mouth sores, or blisters, after taking antibiotics should inform their doctor before taking this particular antibiotic. 

Your doctor may need to adjust the dosage depending on individual factors such as age, other medical conditions, weight, etc.

What Should You Be Careful to Avoid While Taking Cefalexin?

Cefalexin is an antibiotic that is commonly used to treat a variety of bacterial infections. While it is generally safe, it can interact with other medications you may be taking and cause serious adverse reactions. 

It is important to be aware and knowledgeable about these interactions, as they could have serious implications for your health.

Avoid Alcohol

Alcohol can interfere with the effectiveness of cefalexin and can increase the risk of side effects. Therefore, it is important to avoid drinking alcohol while taking cefalexin.

While it is relatively safe to drink alcohol with cefalexin in moderation, doing so may not be the best idea. 

This is because the side effects of alcohol combined with those of cefalexin can overlap, making it difficult for your body to metabolize both substances at once. Additionally, drinking too much alcohol can work against the effectiveness of cefalexin as well as any other medications you might be taking.

Also, keep in mind that consuming too much alcohol while on this medication may add extra stressors to your body’s immune system and make it more difficult to manage existing conditions or treat existing illnesses or infections effectively.

Avoid Other Medications

Some of the drugs that may interact with cefalexin include BCG, cholera vaccine, metformin, and multivitamins with minerals. 

Some possible reactions from this drug interaction may be nausea, abdominal pain or cramps, headache, drowsiness or dizziness, or rashes. If you are taking any of the medications mentioned above in addition to cefalexin it is important to speak to your doctor about any potential risks associated with this combination. 

Additionally, make sure your doctor is aware of all other medications you are taking, so they can best advise how to proceed and whether any adjustments need to be made in order to prevent adverse effects.

Are There Any Warnings or Precautions for This Medication?

It is important, to be honest with your doctor about any allergies, illnesses, medications, and other health-related information when taking cefalexin. 

Those who are allergic to penicillin may also be at risk for an allergic reaction when taking cefalexin. 

Signs of an allergic reaction can include a rash, itching, difficulty breathing, or swelling in the face or throat.

If you experience any uncomfortable side effects while taking this medication, it is recommended that you reach out to your doctor right away, as situations can vary from person to person. 

Who Should Not Be Taking Cefalexin?

Anyone with an allergy to cefalexin or any other ingredients contained in the medication should not take it. An allergic reaction may lead to skin rash, hives, difficulty breathing, or face swelling; these symptoms require immediate medical attention. 

Other Reasons

In addition, those with kidney disease or any other diseases of the kidney should consult their physician before taking cefalexin. 

Cefalexin is considered a pregnancy category B medication, meaning it has not been found to cause harm when taken during pregnancy. 

However, women who are pregnant or breastfeeding should speak to their health professionals about potential risks before taking cefalexin. 

Frequently Asked Questions

How Should Cefalexin Be Used?

Cefalexin is an antibiotic prescribed for the treatment of certain bacterial infections. The adult recommended dose of cefalexin ranges from 250 mg to 1,000 mg four times daily and can be taken with or without food. However, for children, the usual dose of cefalexin depends on their body weight.

How Can You Determine the Right Dosage?

It should be noted that every person needs a different dose as factors such as body weight, other medical conditions, and medications currently taken may play a role in deciding how much medication should be consumed. Thus, each person should determine the necessary dosage through consultation with a medical professional. 

How Can DrHouse Help You?

DrHouse provides a comprehensive telehealth service that includes consultations with experienced healthcare professionals, prescription medications, and much more.

You can start a visit with one of our online doctors in as little as 15 minutes. Our doctors are available 24 hours a day, 7 days a week to help you receive the care you need.

They can assess your condition and determine whether cefalexin is the right medication for you. They can also answer any questions you may have about the side effects and interactions associated with this drug, as well as discuss any other concerns or issues you might have.

You can also get refills or a new prescription for Cefalexin or any other antibiotic you may need, all without leaving the comfort of your own home.

At DrHouse, we believe in providing quality healthcare that is fast and convenient. So don’t wait – start a visit today!

Final Thoughts

It is important to understand the potential risks associated with taking cefalexin and to talk to your doctor about any possible drug interactions or allergies that could occur. 

Additionally, individuals should be aware of who should not take this medication and consult their medical provider if they have any doubts. 

By being informed and understanding what should be avoided while taking cefalexin, you can ensure proper use of the medication and avoid any potentially dangerous side effects.


Content on the DrHouse website is written by our medical content team and reviewed by qualified MDs, PhDs, NPs, and PharmDs. We follow strict content creation guidelines to ensure accurate medical information. However, this content is for informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment. For more information read our medical disclaimer.

Always consult with your physician or other qualified health providers about medical concerns. Never disregard professional medical advice or delay seeking it based on what you read on this website.

If you are experiencing high fever (>103F/39.4C), shortness of breath, difficulty breathing, chest pain, heart palpitations, abnormal bruising, abnormal bleeding, extreme fatigue, dizziness, new weakness or paralysis, difficulty with speech, confusion, extreme pain in any body part, or inability to remain hydrated or keep down fluids or feel you may have any other life-threatening condition, please go to the emergency department or call 911 immediately.



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