Ampicillin

Written By Dr. Syeda Aafia

Reviewed By Dr. Rajeev Sharma

Last updated 25 Nov 2025 | 09:34 AM (UTC)

Ampicillin Uses

Ampicillin is used in the treatment of bacterial infections.

Available generics for Ampicillin

Order with generics and save upto 50%

Biocilin 100mg Injection

vial of 1 injection

Get by Tomorrow

₹7.5

~~₹8.16~~

8% off

Minimum order quantity: 1

Campicillin 500mg Injection

vial of 1 injection

Get by Tomorrow

₹11.4

~~₹14.55~~

22% off

Minimum order quantity: 1

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.

Get medicines for Ampicillin

Want to Know More

Read Our Editorial Policy

Medicine brands for Ampicillin

Broadicilin

Alkem Laboratories Ltd

₹13 to ₹54

8 variant(s)

Aristocillin

Aristo Pharmaceuticals Pvt Ltd

₹10 to ₹18

8 variant(s)

Campicillin

Cadila Pharmaceuticals Ltd

₹14 to ₹89

3 variant(s)

JP Cilin

Jagsonpal Pharmaceuticals Ltd

₹29 to ₹29

1 variant(s)

Biocilin

Biochem Pharmaceutical Industries

₹8 to ₹61

6 variant(s)

Zycillin

Zydus Healthcare Limited

₹15 to ₹15

1 variant(s)

Ampikem

Alkem Laboratories Ltd

Ortin Laboratories Ltd

₹41 to ₹41

1 variant(s)

Sam AT

Aretaeus Pharmaceuticals

₹57 to ₹65

2 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.
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.
Take it with food and plenty of fluids to avoid an upset stomach.
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.