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Megapen 250/250 mg

100% of 100

US$ 0.26

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More Information
SKU 57
Generic Name Ampicillin Cloxacillin
Manufacturer Aristo Pharamaceuticals Pvt Ltd, India
Pack Size Qty Price Per Pill or Unit Price Cart
30 Capsules US$ 0.38 US$ 11.50
60 Capsules US$ 0.30 US$ 18.0022%US$ 23.00
90 Capsules US$ 0.26 US$ 23.5032%US$ 34.50
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Megapen 250 mg has two active ingredients, namely Ampicillin and Cloxacillin. Ampicillin and Cloxacillin is a combination of penicillin antibiotic medicine prescribed mainly to provide an extended line of effectiveness, particularly against penicillin-resistant infections. They both work by stopping the growth of bacteria.

This antibiotic medication is used against a wide range of bacterial infections such as middle ear infections, upper and lower respiratory tract infections, gastrointestinal infections, skin and soft tissue infections (boils, infections due to insect bites, impetigo, a bacterial skin infection characterized by small pus-filled blisters, and endocarditis inflammation of the lining of the heart and its valves).

You must share with your doctor the list of all medications you may be using, especially those: allopurinol, probenecid, chloroquine, phenytoin, antacids, a blood thinner such as warfarin, and another antibiotic (for the same or a different infection). These drugs may interact with Ampicillin and Cloxacillin. However, this is incomplete information, as mentioning all the details here is out of the scope of this guide. There may be other medications. Never start a new medication without consulting a doctor.


Things to remember:


   — Do not share this medicine with anyone else, even if he/she has the same symptoms as you do

   — Do not use this medication for any other infection without referring to the doctor

   — In case you do not feel comfortable after completing the dose prescribed by the doctor, then consult with your doctor immediately

   — The safety and efficacy of this drug is not established in children below 16 years of age

   — Do not freeze the medicine and store the medicine at room temperature

   — Do not use this drug if you are allergic to this active ingredient, Ampicillin and Cloxacillin, or any other ingredient of the drug


Inform your doctor if you are pregnant or planning to be pregnant or a breastfeeding mom. Also, don’t forget to mention him if you have high blood pressure, past episodes of depression, a history of seizures, asthma, diabetes or kidney/liver issues.

Diarrhea, nausea, and vomiting are common side effects of Ampicillin and Cloxacillin (Omnipen, Ampicillin and Cloxacillin). If any of these effects continue for a longer time or deteriorate, contact your doctor immediately.


Ampicillin and Cloxacillin may rarely cause serious side effects such as persistent/bloody diarrhea (Clostridium difficile-associated diarrhea), dark urine, persistent nausea/vomiting, severe stomach/abdominal pain, yellowing eyes/skin, easy bruising/bleeding, new signs of infection (fever, persistent sore throat), or unusual tiredness. The information on the side effects of Ampicillin and Cloxacillin in this guide is incomplete, and there may be other side effects.

Dosage depends upon your age, weight, medical condition and your response to the treatment. Hence doctor will decide your dose. Take the dose exactly as prescribed by him. The drug is usually recommended to be taken with a meal or snack. The Capsules can be swallowed easily with a glass of water. The doctor recommends it thrice a day or every 12 hours. Do not split or break the capsules.


You should take the dose until you finish the prescription. Do not change the dose or stop it even if you feel better. You should complete the full medication course.

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