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OA Suspension

Written By Dr. Anuj Saini, MMST, MBBS
Reviewed By Dr. Rajeev Sharma, MBA, MBBS
Last updated on 31 Mar 2026 | 02:31 PM (IST)
OA Suspension is an antibiotic medicine. It is commonly given to children for the treatment of a wide range of bacterial infections targeting the eyes, ears, nose, throat, lungs, skin, and urinary tract. OA Suspension is also a part of the multidrug-resistant tuberculosis (MDR-TB) treatment regimen.
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OA Suspension image
OA Suspension image

Your child’s medicine at a glance

Give OA Suspension to your child orally, preferably at a fixed time, either before or after meals. In case your child develops stomach upset, prefer giving it with meals. The dose and duration depend on the type and severity of the infection, your child’s age, and body weight, so stick to the dose, time, and way prescribed by the doctor. If your child vomits within 30 minutes of intake, repeat the same dose, but do not double-dose if it's time for the next dose.


OA Suspension is generally safe when taken in the recommended dose. However, in some cases, minor and temporary side effects may be occur on taking this medicine. These include nausea, vomiting, abdominal cramps, diarrhea, rash, and headache. Usually, these effects subside once your child’s body adapts to the medicine. However, in case of prolonged or bothersome events, it would be best to consult your child’s doctor without any delay.


Narrate your child’s complete medical history to your child’s doctor, including any previous episode of allergy, heart problems, liver impairment, and kidney malfunction. This information is critical for dose alterations and for planning your child’s overall treatment.

Uses of OA Suspension in children

Benefits of OA Suspension for your child

Treatment of Bacterial infections
OA Suspension is an antibiotic medicine that can be used to treat many different infections caused by bacteria. It stops the growth of the bacteria causing the infection and clears the infection. Take it for as long as prescribed by the doctor and avoid skipping doses. This will make sure that all bacteria are killed and they do not become resistant.

Side effects of OA Suspension in children

OA Suspension does not pose serious side effects and is well-tolerated by children. In case the side effects do occur, they’re likely to subside once the body adapts to the medicine. Consult your child’s doctor if these side effects persist or bother your child. The most common side effects include-
Common side effects of OA
  • No common side effects seen

How can I give OA Suspension to my child?

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Measure it with a measuring cup and take it by mouth. Shake well before use. OA Suspension may be taken with or without food.

How OA Suspension works

OA Suspension is an antibiotic. It interferes with the genetic material of bacteria by implanting defects in its DNA. These defects hamper the multiplication of the bacteria and affect its survival as well. Thus, it kills the infection-causing bacteria from growing further and prevents the infection from spreading without making them resistant to further treatment.

Quick tips

  • Your child must complete the entire course of antibiotics. Stopping too soon may cause the bacteria to multiply again, become resistant, or cause another infection.
  • Do not give any calcium, magnesium, iron, vitamin, or antacid within 2 hours of taking OA Suspension as these can affect the absorption of the medicine.
  • Encourage your child to drink plenty of water in case diarrhea develops as a side effect.
  • Conditions like common cold and flu are caused by viruses. Never use this medicine for such conditions.
  • Discontinue OA Suspension and inform the doctor immediately if your child develops a rash, itchy skin, swelling of face and mouth, or has difficulty in breathing.
  • Only give OA Suspension to your child for their current infection. Never save medicine for future illnesses.

Safety advice

Kidney

Kidney

CAUTION
OA Suspension should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
OA Suspension should be used with caution in patients with liver disease. Dose adjustment may be needed.
However, discontinue its use immediately if signs or symptoms of hepatitis like vomiting, paleness, and weakness is observed.

Interaction with drugs

Taking OA with any of the following medicines can modify the effect of either of them and cause some undesirable side effects
Moderate

Mycophenolate mofetil (Oral Route)

Your doctor may monitor the effects of Mycophenolate mofetil along with your overall treatment and adjust the doses as per the observations. Ofloxacin may reduce blood levels of Mycophenolate mofetil.
Moderate

Zolmitriptan (Oral Route)

If concurrent use is essential, your doctor may monitor your treatment and adjust the doses as per the observations. Ofloxacin may raise blood levels of Zolmitriptan.
Moderate

Acenocoumarol (Oral Route)

Your doctor may frequently monitor your blood clotting time and adjust the dose of Acenocoumarol accordingly.
Moderate

Warfarin (Oral Route)

Your doctor may frequently monitor your blood clotting time and adjust the dose of Warfarin accordingly.
Moderate

Mefloquine (Oral Route)

Careful consideration is advised in case of epilepsy. Please consult your doctor. Mefloquine may raise blood levels of Ofloxacin and its active form.

Frequently asked questions

An extra dose of OA Suspension is unlikely to harm. However, if you think you have given too much to your child, immediately speak to a doctor. Overdose may cause unwanted side effects such as seizures, tremors, severe headache, sudden weakness, unconsciousness, and palpitations (irregularities of heartbeat). Rush to your child’s doctor on an immediate basis if you notice any of these symptoms.
Ineffective treatment with OA Suspension could mean that the medicine is not able to act against the infection-causing bacteria. In such a case, visit your child’s doctor who may prescribe some other antibiotic that would be more specific in action. Not all medicines are given by oral route, some may have to be given by IV route (intravenous injection) in the hospital.
OA Suspension can sometimes interact with other medicines or substances. Tell your doctor about any other medicines your child is taking before starting OA Suspension. Also, check with your child’s doctor before giving any medicine to your child.
Antibiotics usually do not interfere with the ingredients in vaccines or cause a bad reaction in a child who has just been vaccinated. However, children taking antibiotics should not get vaccinated until they recover from the illness. As soon as your child feels better, the vaccine can be given.
Inform the doctor if your child is suffering from a heart disease, genetic disorders involving blood vessels, seizures, psychiatric disorders, diabetes, photoallergy (allergy from sunlight), neuromuscular disorders, or rheumatoid arthritis. This is because there is a possibility that OA Suspension may aggravate these conditions and result in complications.

Fact Box

Chemical Class

Quinoline carboxylic acids

Habit Forming

No

Therapeutic Class

ANTI INFECTIVES

Action Class

Bacterial DNA Replication Inhibitors- Quinolones/ Fluroquinolones
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Aaron Pharmaceuticals Pvt Ltd
Address: Aaron Healthcare and Export Pvt.Ltd., Aaron House, Mahakali Caves Road, Andheri ( East), Mumbai-93

Vendor Details

Country of origin: India
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