Onimar 150mg Tablet

Reviewed By Dr. Mekhala Chandra, MD, MBBS

Last updated on 19 Sep 2025 | 03:31 PM (IST)

Onimar 150mg Tablet is used to treat and prevent symptoms of asthma and chronic obstructive pulmonary disorder (a lung disorder in which flow of air to the lung is blocked). It helps in relaxing the muscles of the air passages, thus widening it and making it easier to breathe.

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General Information

Contains

Theophylline (150mg)

Marketer

Emcee Pharmaceuticals Pvt Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Onimar 150mg Tablet can be taken with the food in the evening. Take it at the same time every day to get the most benefit. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. Take it for as long as it is prescribed for you. Do not miss even a single dose, if in any case, you missed a dose, take it as soon as you remember it. It does not work immediately or prevent the already started breathing trouble, hence always carry your medical inhaler with you for an emergency.

The most common side effects of this medicine include vomiting, headache, nausea, stomach upset, and insomnia. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. Generally, it is advised not to consume alcohol or do not smoke while on treatment. You must avoid high caffeinated products like coffee, tea, and dark chocolates as it enhances drug side effects.

Before taking this medicine, let your doctor if you have kidney or liver disease or if you have heart-related problems. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works. Inform your doctor if you are pregnant or breastfeeding before starting the treatment.

Uses of Onimar Tablet

Benefits of Onimar Tablet

Asthma
Asthma is a condition in which the airways of the lungs become inflamed and narrowed, leading to symptoms such as wheezing, breathlessness, chest tightness, and coughing. Onimar 150mg Tablet works by relaxing the muscles around the airways and reducing airway narrowing, which improves airflow to the lungs. This helps in easing breathing, reducing asthma symptoms, and improving the patient’s ability to carry out daily activities with fewer breathing difficulties.

Chronic obstructive pulmonary disease (COPD)
Chronic obstructive pulmonary disease (COPD) is a long-term lung condition that causes persistent breathing problems due to airway obstruction and damage to the lungs. Patients often experience chronic cough, mucus buildup, and shortness of breath, which worsen over time. Onimar 150mg Tablet helps by widening the airways and reducing inflammation, allowing better movement of air in and out of the lungs. This relieves breathlessness, decreases the frequency of flare-ups, and enhances overall lung function, improving quality of life in people living with COPD.

Side effects of Onimar Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Onimar

Vomiting
Headache
Nausea
Upset stomach
Insomnia (difficulty in sleeping)

How to use Onimar Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Onimar 150mg Tablet may be taken with or without food, but it is better to take it at a fixed time.

How Onimar Tablet works

Onimar 150mg Tablet is a bronchodilator. It works by relaxing the muscles of the airways and widens airways. This makes breathing easier.

Quick tips

You have been prescribed Onimar 150mg Tablet for prevention and treatment of asthma and chronic obstructive pulmonary disease (COPD).
It should be taken at the same time each day, preferably in the evening after food.
It does not work right away and should not be used to relieve sudden breathing problems. Always keep a fast-acting (rescue) inhaler with you.
Your doctor may take regular blood test to monitor potassium level and the level of this medicine in your body.
Notify your doctor if you have ever been diagnosed with kidney, liver or heart disease, or if you have a smoking history. Your dose may need to be adjusted.
Do not discontinue use without consulting your doctor, even if you feel better.
You have been prescribed Onimar 150mg Tablet for prevention and treatment of asthma and chronic obstructive pulmonary disease (COPD).
It should be taken at the same time each day, preferably in the evening after food.
It does not work right away and should not be used to relieve sudden breathing problems. Always keep a fast-acting (rescue) inhaler with you.
Your doctor may take regular blood test to monitor potassium level and the level of this medicine in your body.
Notify your doctor if you have ever been diagnosed with kidney, liver or heart disease, or if you have a smoking history. Your dose may need to be adjusted.
Do not discontinue use without consulting your doctor, even if you feel better.

Safety advice

Alcohol

UNSAFE

It is unsafe to consume alcohol with Onimar 150mg Tablet.

Pregnancy

CONSULT YOUR DOCTOR

Onimar 150mg Tablet may be unsafe to use during pregnancy. Although there are limited studies in humans, animal studies have shown harmful effects on the developing baby. Your doctor will weigh the benefits and any potential risks before prescribing it to you. Please consult your doctor.

Breast feeding

SAFE IF PRESCRIBED

Onimar 150mg Tablet is safe to use during breastfeeding. Human studies suggest that the drug does not pass into the breastmilk in a significant amount and is not harmful to the baby.
Avoiding breastfeeding for 2-4 hours after Onimar 150mg Tablet can further decrease the exposure of medicine to the baby.

Driving

SAFE

Onimar 150mg Tablet does not usually affect your ability to drive.

Kidney

SAFE IF PRESCRIBED

Onimar 150mg Tablet is safe to use in patients with kidney disease. No dose adjustment of Onimar 150mg Tablet is recommended.

Liver

CAUTION

Onimar 150mg Tablet should be used with caution in patients with liver disease. Dose adjustment of Onimar 150mg Tablet may be needed. Please consult your doctor.

Interaction with drugs

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

Life-threatening

Carvedilol (Oral Route)

Do not use Carvedilol with Theophylline in any form if you have asthma or breathing issues, as it may result in excessive breathlessness or coughing.

Life-threatening

Labetalol (Injection Route)

Do not use Labetalol with Theophylline in any form if you have asthma or breathing issues, as it may result in excessive breathlessness or coughing.

Life-threatening

Labetalol (Oral Route)

Do not use Labetalol with Theophylline in any form if you have asthma or breathing issues, as it may result in excessive breathlessness or coughing.

Life-threatening

Pindolol (Oral Route)

Do not use Pindolol with Theophylline in any form if you have asthma or breathing issues, as it may result in excessive breathlessness or coughing.

Life-threatening

Propranolol (Oral Route)

Do not use Propranolol with Theophylline in any form if you have asthma or breathing issues, as it may result in excessive breathlessness or coughing.

Frequently asked questions

How quickly does Onimar 150mg Tablet work?

Onimar 150mg Tablet starts acting quickly and you may notice improvement in symptoms within about half an hour of taking it. However, the medicine may take a little longer about 4-8 hours to show full effect. Consult your doctor if there is no considerable improvement in your symptoms.

What foods to avoid while taking Onimar 150mg Tablet?

While on Onimar 150mg Tablet you should avoid foods rich in caffeine like tea, cocoa, coffee, and chocolate. These foods can increase side effects associated with Onimar 150mg Tablet. In addition to that, you should avoid alcohol and tobacco while on Onimar 150mg Tablet. Discuss with your doctor if you are not sure or have any concerns regarding food restriction.

How should Onimar 150mg Tablet be taken?

Take the medicine exactly as prescribed by your doctor. Usually, it is prescribed to be taken twice a day. Do not crush or chew the tablets. The capsules can be taken whole or opened and the contents mixed with soft food and swallowed without chewing.

Fact Box

Chemical Class

Xanthines Derivative

Habit Forming

Therapeutic Class

RESPIRATORY

Action Class

Xanthine Derivatives- Respiratory

Related lab tests

Absolute Eosinophil Count

Complete Blood Count

References

Barnes PJ. Pulmonary Pharmacology. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. pp. 1040-44.
Boushey HA. Drugs Used in Asthma. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 345.
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1350-51.
Chaves RG, Lamounier JA. Breastfeeding and maternal medications. J Pediatr (Rio J). 2004;80(5 Suppl):S189-S198. [Accessed 01 Apr. 2019] (online) Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 01 Apr. 2019] (online) Available from:
Theophylline [Prescribing Information]. Wilson, NC: Rhodes Pharmaceuticals; 2023. [Accessed 07 Aug. 2023]. (online) Available from:

User feedback

Patients taking Onimar 150mg Tablet

Twice A Day

80%

Once A Day

20%

What are you using Onimar Tablet for?

Asthma

100%

How much was the improvement?

Excellent

83%

Average

17%

What were the side-effects while using Onimar 150mg Tablet?

Drowsiness

50%

No Side Effect

50%

How do you take Onimar Tablet?

With or without food

50%

With food

50%

Please rate Onimar 150mg Tablet on price

Expensive

50%

Not Expensive

50%

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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: Emcee Pharmaceuticals Pvt Ltd
Address: DB-107, Ground Floor, Sector-I, Salt Lake City, Kolkata- 700064

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Onimar 150mg Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Onimar Tablet

Benefits of Onimar Tablet

Side effects of Onimar Tablet

How to use Onimar Tablet

How Onimar Tablet works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Carvedilol (Oral Route)

Labetalol (Injection Route)

Labetalol (Oral Route)

Pindolol (Oral Route)

Propranolol (Oral Route)

Frequently asked questions

How quickly does Onimar 150mg Tablet work?

What foods to avoid while taking Onimar 150mg Tablet?

How should Onimar 150mg Tablet be taken?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Absolute Eosinophil Count

Complete Blood Count

References

User feedback

Patients taking Onimar 150mg Tablet

What are you using Onimar Tablet for?

How much was the improvement?

What were the side-effects while using Onimar 150mg Tablet?

How do you take Onimar Tablet?

Please rate Onimar 150mg Tablet on price

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

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