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Are you Looking to Buy Ampicillin (Ampicillin) from OnlineCanadianPharmacy.

We don't sell this brand-version medication.

( Affordable Generic Alternatives )

Buy Generic Ampicillin

Prescription Prescription Required
Formulation : Capsule
Drug Name Dosage Quantity Price Buy Now
Ampicillin 250mg 100 $66.66 Add To Cart
Ampicillin 500mg 100 $98.98 Add To Cart
Dosage: 250mg
Quantity: 100
Price: $66.66
Dosage: 500mg
Quantity: 100
Price: $98.98


  • Ampicillin is a penicillin-type antibiotic used to treat various bacterial infections.
  • It functions by halting the growth of bacteria.
  • Specifically effective against bacterial infections; ineffective against viral infections like the common cold or flu.
  • Using antibiotics unnecessarily can lead to reduced efficacy for future infections.

Dosage and administration

  • Take ampicillin orally, as prescribed by your doctor, typically 4 times a day (every 6 hours).
  • Take on an empty stomach (1 hour before or 2 hours after a meal) with a full glass of water.
  • Stay well-hydrated unless advised otherwise by your doctor.
  • Dosage determined by your medical condition and response to treatment.
  • Maintain a consistent schedule for optimal effectiveness; take at the same time(s) daily.
  • Complete the full prescribed course even if symptoms improve early; stopping early may lead to infection recurrence.
  • Inform your doctor if your condition persists or worsens.

Side effects

  • Possible side effects of ampicillin include nausea, vomiting, diarrhea, or mouth/tongue sores.
  • Inform your doctor or pharmacist promptly if these effects persist or worsen.
  • The medication is prescribed because the benefits are considered greater than the risk of side effects.
  • Serious side effects may include persistent nausea or vomiting, unrelenting sore throat or fever, dark urine, abdominal pain, yellowing of eyes or skin, and easy bruising or bleeding.
  • Ampicillin may rarely cause a severe intestinal condition (C. difficile) with symptoms such as persistent diarrhea, abdominal pain/cramping, and blood/mucus in stool; seek immediate medical attention if these occur.
  • Avoid anti-diarrhea or opioid products if you experience these symptoms, as they may worsen the condition.
  • Prolonged or repeated use may lead to oral thrush or a new vaginal yeast infection; contact your doctor if you notice white patches in your mouth or changes in vaginal discharge.
  • A severe allergic reaction is rare but requires immediate medical help; symptoms include rash, itching/swelling (especially face/tongue/throat), severe dizziness, and trouble breathing.
  • Ampicillin may cause a mild rash; seek medical help if any rash develops, as it could be a sign of a severe allergic reaction.
  • This is not an exhaustive list of side effects; contact your doctor or pharmacist for any other observed effects.


  • Inform your doctor or pharmacist about any allergies to ampicillin, penicillin, cephalosporin antibiotics, or other relevant allergies.
  • Discuss your medical history with your healthcare provider, especially if you have kidney disease or a certain type of viral infection (infectious mononucleosis).
  • Ampicillin may impact the effectiveness of live bacterial vaccines (such as the typhoid vaccine); inform your healthcare professional before undergoing immunizations/vaccinations.
  • Older adults may be more susceptible to side effects when using this drug.
  • Use ampicillin during pregnancy only if absolutely necessary and discuss potential risks and benefits with your doctor.
  • Ampicillin can pass into breast milk, so consult your doctor before breastfeeding.



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250mg, 500mg

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All product content included on is for information only. Please note that it is not a replacement for your individual professional medical care or advice. Always remember to speak with a qualified health professional before taking any prescription or non prescription medication.

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