Information about Ampicillin

Ampicillin Uses

Ampicillin is used in the treatment of bacterial infections.

How Ampicillin works

Ampicillin is an antibiotic. It kills bacteria by preventing them from forming the bacterial protective covering (cell wall) which is needed for them to survive.
Written By
PhD (Pharmacology), PGDPRA
Reviewed By
MD Pharmacology, MBBS
Last updated
13 Jun 2023 | 11:29 AM (UTC)

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Available Medicine for Ampicillin

BroadicilinAlkem Laboratories Ltd
14 to ₹588 variant(s)
AristocillinAristo Pharmaceuticals Pvt Ltd
10 to ₹198 variant(s)
CampicillinCadila Pharmaceuticals Ltd
15 to ₹873 variant(s)
ZycillinZydus Healthcare Limited
9 to ₹303 variant(s)
JP CilinJagsonpal Pharmaceuticals Ltd
311 variant(s)
BiocilinBiochem Pharmaceutical Industries
8 to ₹656 variant(s)
AmpikemAlkem Laboratories Ltd
28 to ₹552 variant(s)
8 to ₹533 variant(s)
Sam ATAretaeus Pharmaceuticals
61 to ₹702 variant(s)
OrcillinOrtin Laboratories Ltd
441 variant(s)

Expert advice for Ampicillin

  • Ampicillin is used to treat infections caused by bacteria.
  • Finish the prescribed course, even if you start to feel better. Stopping it early may make the infection come back and harder to treat.
  • Diarrhea may occur as a side effect. Taking probiotics along with Ampicillin may help. Talk to your doctor if you notice bloody stools or develop abdominal cramps.
  • Stop taking this medicine and inform your doctor immediately if you develop an itchy rash, swelling of the face, throat or tongue or breathing difficulties while taking it.

Frequently asked questions for Ampicillin


Q. Can Ampicillin cause allergic reaction?

Although it is rare but yes, Ampicillin can cause allergic reaction and is harmful in patients with known allergy to penicillins. Get emergency medical help if you have any of the signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Q. Can the use of Ampicillin cause diarrhea?

Yes, the use of Ampicillin can cause diarrhea. It is an antibiotic and it kills the harmful bacteria, however, it also affects the helpful bacteria in your stomach or intestine and causes diarrhea. If diarrhea persists, talk to your doctor about it.

Q. How long does Ampicillin takes to work?

Usually, Ampicillin starts working soon after taking it. However, it may take around 2-3 days to make you feel better while taking Ampicillin.

Q. What if I don't get better after using Ampicillin?

Inform your doctor if you don't feel better after finishing the full course of treatment. Also, inform if your symptoms are getting worse while using this medicine.

Q. Can I stop taking Ampicillin when my symptoms are relieved?

No, do not stop taking Ampicillin and finish the full course of treatment even if you feel better. Your symptoms may improve before the infection is completely cleared.


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