Cephalexin Generic

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*Based on the difference between the U&C price submitted and the price the patient paid, as of April 2023.

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  1. Medication
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  2. Cephalexin
    Generic for Keflex
    30 capsules $4.5 USD
    Save $12.90
  3. Cephalexin
    Generic for Keflex
    30 capsules $5.1 USD
    Save $12.30
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Do you need a prescription for cephalexin?

Yes, cephalexin is only available with a valid physician Rx.

How much is cephalexin without Insurance in the US?

Our website gives two competitive savings options to US customers who wish to purchase cephalexin, as either a brand or generic, if available. The first is access to medications through our mail-order online pharmacy. The second is by using the Now Patient Rx Advantage Card, which can be used in over 65,000 pharmacies nationwide, across America. If you are insured, then in most cases, the cash price will be significantly cheaper than the copay.

What will my out-of-pocket cost be for cephalexin in the US?

There are no out-of-pocket (OOP) costs because we are currently only offering a cash-based option to purchase medications.

Is Now Patient a cephalexin savings card?

Yes. Save up to 90% on your cephalexin with the FREE Now Patient Rx Advantage card*.
*Based on the difference between the U&C submitted by the pharmacy and the price the patients pay.

Can you handle Rx transfers for home delivery in the US?

Yes. If you use the mail-order online pharmacy option, then we can handle requests by you to have your prescription transferred to our pharmacy for home delivery. We can even help you manage your refills by giving you timely reminders, so you do not run out of your medication.

Is Now Patient a cephalexin coupon provider in the US?

No. Now Patient does not provide cephalexin coupons or FREE cephalexin samples.

Do you accept commercial, Medicare or Medicaid coverage for cephalexin in the US?

No. Currently, we only offer cash-based options for purchase, therefore we do not require your insurance benefit details. In the future, our plan is to be able to handle commercial insurance, Medicare and Medicaid including cases where you have multiple health plans that provide benefit coverage (e.g. Medicaid and Commercial). We also anticipate being able to handle more complex scenarios such as using primary insurance combined with a manufacturer copay assistance program.

Does Now Patient work with Medicare?

Our cash-based prices for medications are typically cheaper than Medicare copays. We do not bill Medicare Part D (standalone drug coverage) or Medicare Advantage (combined health and drug coverage). When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

Does Now Patient work with Commercial Insurance?

Our cash-based prices for medications are typically cheaper than commercial plan copays. We do not bill your commercial plan. When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

What should you do if you use too much cephalexin?


Call your doctor right away or seek immediate medical attention if your symptoms do not improve or they become worse after using cephalexin. You can also call 800-222-1222 to reach the American Association of Poison Control Centers or use its online resource if you think you’ve used too much cephalexin. But if you have severe symptoms, call 911 (or your local emergency number) immediately or go to the nearest emergency room.


If you think it is an emergency, call 999 or find your nearest A&E
If you need help now, but it’s not an emergency go to 111.nhs.uk or call 111. Alternatively you can speak to one of our pharmacists or use the Now Patient app to make an appointment with your GP.

What should I do if I miss my dose?

There are occasions when people forget to take their medication at correct prescribed times. This may not only have an effect on potentially making the medication less effective but it may also inadvertently lead to taking doses too close together, thereby increasing the risks of side effects.

Click here to find out what to do if you forgot to take your medication

US brand name of cephalexin and manufacturer

Cephalexin is available under various brand names in the US, including Keflex, and Novo-Lexin

UK brand name of cephalexin and manufacturer

In the UK, cephalexin is available under the brand name cefalexin, which is manufactured by various pharmaceutical companies.

Availability of cephalexin

Cephalexin is available by prescription only.

FDA approval of cephalexin

Cephalexin has been approved by the U.S. Food and Drug Administration (FDA) for the treatment of various bacterial infections.

NHS prescription (UK) for cephalexin

Cephalexin may be available in the UK with an NHS prescription. It is important to consult with your healthcare provider or pharmacist to verify availability.

Mechanism of action

Cephalexin is an antibiotic medication that belongs to the class of drugs known as cephalosporins. It works by interfering with the synthesis of bacterial cell walls, leading to the destruction of the bacteria and the resolution of the infection.

Uses of cephalexin

Cephalexin is commonly used to treat various bacterial infections, including respiratory tract infections, skin and soft tissue infections, urinary tract infections, and bone infections.

Dosage of cephalexin

The dosage of cephalexin may vary depending on the specific infection being treated, the severity of the infection, and the individual patient. It is important to follow the instructions provided by your healthcare provider. The following is a general guideline for the dosages of cephalexin:

  • Adults: The usual adult dose ranges from 250 mg to 1000 mg taken orally every 6 to 12 hours, depending on the severity of the infection
  • Children: The dosage for children is based on body weight. The usual pediatric dose ranges from 25 mg/kg to 50 mg/kg per day, divided into 4 doses

It is important to take cephalexin exactly as prescribed by your healthcare provider. Do not adjust the dosage or stop taking the medication without consulting your doctor.

Forms available of cephalexin

Cephalexin is available in the following dosage forms:

  • Capsules: Cephalexin capsules are available in different strengths, such as 250 mg and 500 mg
  • Oral Suspension: Cephalexin oral suspension is available for those who have difficulty swallowing capsules. The suspension should be shaken well before each use and measured with a special measuring spoon or device

It is important to use the specific form of cephalexin prescribed by your healthcare provider and to follow the drug information and medical advice provided.

Warnings and precautions for cephalexin

  • Tell your doctor if you have had an allergic reaction to cephalexin, penicillins or other cephalosporins in the past. Symptoms may include hives, itching, swelling, trouble breathing, skin rash, red, blistered, or peeling skin.
  • Cephalexin should be used with caution in patients with a history of kidney disease, and intestinal disease, especially colitis

Is it safe to take cephalexin if I am pregnant or planning on becoming pregnant?

Cephalexin is generally considered safe to use during pregnancy. However, it is important to discuss the use of cephalexin with your healthcare provider if you are pregnant, planning to become pregnant, or suspect you may be pregnant. They can evaluate the potential risks and benefits to determine the best course of action for your specific situation.

Is it safe to take cephalexin while breastfeeding?

Cephalexin is excreted in breast milk, but it is generally considered safe to use while breastfeeding. However, it is recommended to consult with your healthcare provider before taking cephalexin if you are breastfeeding. They can provide guidance on the appropriate use and potential risks for your specific situation.

Interactions with other drugs

Cephalexin may interact with certain medications, including warfarin, metformin, and probenecid. It is important to inform your healthcare provider about all the prescription drugs, over the counter medication, multivitamins, and supplements you are taking, to avoid potential drug interactions and adverse effects.

Side effects of cephalexin

Common side effects of cephalexin may include:

  • Nausea
  • Diarrhea
  • Vomiting
  • Stomach pain
  • Headache

If you experience any serious side effects, or if you have any concerns about the side effects, it is important to contact your healthcare provider for further evaluation.
It is important to report any side effects or adverse reactions to your healthcare provider, as they can provide guidance and support.

Similar Drugs

Other cephalosporin antibiotics in the same class as cephalexin include:

  • Cefadroxil
  • Cefazolin
  • Cefuroxime
  • Cefixime
  • Cefdinir

These drugs may have similar indications and mechanisms of action but may differ in specific details. It is important to consult with your healthcare provider for guidance on the most appropriate treatment option for your specific condition.



Now Patient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information in this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

Stefano Mirabello Medical Reviewer
Pharmacist / B.Pharm
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