Cephalexin: Uses, Dosage, Price, Side Effects, Precautions & More

What is Cephalexin?

Cephalexin is a cephalosporin antibiotic which is generally used in wide variety of infetions caused by bacteria Such as bronchitis, urinary tract infections and gynaecological infections to name a few.

Manufactured By – Zydus Cadila

Buy & Get Minimum 20% Discount: 1Mg Medicines | Practo Coupon

Uses of Cephalexin

Cephalexin  used in a wide variety of infections caused by bacteria such as ear infections, tonsillitis, sinusitis, skin infections.

Also Read: Clotrimazole Uses

How does Cephalexin work?

Cephalexin belongs to the class of cephalosporin antibiotics which interferes with the synthesis of bacterial cell wall synthesis, causing complete termination of bacterial growth.

Cephalexin Price In India

SpecificsCephalexin Price
250 mg Strip of 10 TabletsRs 63
Also Read: Carbamazepine Price | Atorvastatin Price

How to Take Cephalexin?

Cephalexin usually comes in the form of tablets & suspensions (which has to taken by mouth). Every possible formulation might not be listed here.

Tablets are usually taken by mouth with a glass of water as directed by your doctor, usually twice daily after food. For best results, Cephalexin must be taken at evenly spaced times.

Shake the suspension liquid well before each use to mix the medication evenly. Use a measuring cup to consume the correct dosage of medicine.

The usage of Cephalexin must be continued until the prescribed dosage is finished, even if your symptoms disappear.

It is always advised for the user to read the Patient Information Leaflet provided by the pharmacist and further queries must be solved with your doctor or pharmacist.

Common Dosage For Cephalexin?

The drug dosage and form is decided by the physician based upon:

age and body weight of the patient

health status/medical condition of the patient

disease severity

reaction to the first dose

history of allergy/drug reactions

A typical adult dosage ranges from 1 to 4 g daily in divided doses. The usual adult dose is 250 mg every 6 hours.

The usual recommended daily dosage for pediatric patients is 25 to 50 mg/kg in divided doses.

Cephalexin Suspensions – The dose depends on the weight of the child. Your doctor or pharmacist will tell you exactly how many teaspoonful or 5 mL measures of the liquid suspension your child must take.

Also Read: Acyclovir Dosage | Amikacin Dosage

When To Avoid Cephalexin?

  • Cephalexin doesn’t work in case of viral infections (such as flu, common cold)). Unnecessary use of antibiotic must be avoided because it decreases its efficacy.
  • Cephalexin should be avoided in patients with previous allergic reactions to cefuroxime, cephalosporin, penicillin, or other drugs.
  • Cephalexin suspension contains sugar and therefore it should not be used in patients suffering from diabetes.
  • The use of Cephalexin should be avoided in patients suffering from gastrointestinal disease, particularly colitis.
  • Cephalexin should be avoided if you are pregnant or planning to become pregnant.
  • Cephalexin should be avoided if you are breastfeeding or planning to breastfeed.

Side-effects of Cephalexin?

Side-effects to include

Diarrhea, nausea, vomiting, loose stools. Reports of abdominal pain have occurred.

Clostridium difficile-associated disease (CDAD) has been reported with use of many antibacterial agents including Cephalexin.

Headache and dizziness.

Allergic reactions – Rashes, itching, or shortness of breath may occur.

As with other cephalosporins, there have been rare reports of drug fever.

Prolonged use can cause oral fungal / yeast infections.

Reported Allergic Reactions?

Possible allergic reactions reported are rashes, difficulty breathing or swallowing, swelling, hoarseness, and itching.

Drug Interactions to Be Careful About

  • All the possible drug interactions might not be listed here. It is always advised that the patient must inform the physician about of all the drugs/products you use.
  • The concomitant administration of aminoglycosides (type of antibiotics) and some cephalosporins has caused toxicity in kidneys.
  • Concomitant use of Cephalexin and diuretics (medications designed to increase the amount of water and salt expelled from the body as urine) such as furosemide and ethacrynic acid may increase the risk of kidney toxicity.
  • Cephalexin also interacts with Metformin – an antidiabetic drug.
  • Probenecid can lead to increased blood levels of Cephalexin.
  • Cholestyramine – decreased cephalosporin absorption.
  • Live Typhoid Vaccine – decreased immunological response to the typhoid vaccine
  • You must also inform about the herbal products that you are consuming. You must not modify the drug regimen without your doctor’s approval

Shows Effects / Results In:

You should start to feel recovered during the first few days of treatment with Cephalexin.

A complete dose prescribed by your doctor must be taken for complete cessation of infection from your body (even if the symptoms disappear)


Is Cephalexin Addictive?


Can I have Cephalexin with alcohol?

Alcohol can cause liver damage temporarily and that might increase the side effects of Cephalexin. Also, the chances of having side effects increases when consumed with alcohol because of dehydrating nature of alcohol on your body.

Any particular food item to be avoided?


Can I have Cephalexin When Pregnant?

Always inform your doctor if you are pregnant or plan to become pregnant.

There are very few published research papers on the use of Cephalexin in human pregnancy. Cephalexin should be used during pregnancy only if clearly needed.

Cephalexin can affect the gut flora, causing decreased efficacy of oral contraceptives.

Can I have Cephalexin when feeding a baby?

Always inform your doctor if you are breast-feeding your child.

There is evidence that Cephalexin might be excreted in human breast milk.

Can I drive after taking Cephalexin?

Cephalexin may cause dizziness, patients should be warned to be cautious when driving or operating machinery.

What happens if I overdose on Cephalexin?

If you have taken an over-dose, it is advisable to contact your consulting physician immediately.

What happens if I eat expired Cephalexin?

The antibiotic may not work as well. Please inform your physician regarding the same.

What happens if I miss a dose of Cephalexin?

The medicine may not work well if you miss a dose because for effective working of the drug, a certain amount of drug must be present in your body at all times.

Always consume the missed dose as soon as you remember it. But, if it’s already time to take the second dose after that – do not take double dose.

Pro Tips When Taking Cephalexin

In common with other antibiotics, Cephalexin may affect the gut flora, leading to reduced efficacy of combined oral contraceptives.

Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking cephalexin.

Also read about other medicine: Clopidogrel
📢 Hungry for more deals? Visit CashKaro stores for best cashback deals & online products to save up to ₹15,000 per month. Download the app - Android & iOS to get free ₹25 bonus Cashback!


Please enter your comment!
Please enter your name here

13 − 12 =