THEOTAS 400MG TABLET SR

Theotas 400mg Tablet SR 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. Theotas 400mg Tablet SR 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.

Commonly bought for:

SALT CATEGORY: GENERAL

2/7 pharmacies priced

7 pharmacies checked

2 prices found

PharmEasyOut of stock₹7.12
1mg (Tata)Out of stock₹8.50

No price found yet at Apollo, Netmeds, Truemeds, MedPlus, PlatinumRx. They may still stock it.

Prices come from pharmacy websites and can change. “Checked” is when we last read that pharmacy's page, not when the price last changed. Confirm on the pharmacy's own page before you order.

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Doctor Consultation Required

Safety Notice

Never switch or substitute prescribed medications without consulting your treating physician. Equivalent products may differ in excipients, release profiles, or clinical suitability.

FLYTHAMA 400MG TABLET SR

Flythama

X-ANT-SR TABLET

X-Ant

medical_informationMedicine & Clinical Information

check_circleUses & Indications

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Asthma
Chronic obstructive pulmonary disease (COPD)

lightbulbExpert Advice & Quick Tips

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arrow_rightYou have been prescribed Theotas 400mg Tablet SR for prevention and treatment of asthma and chronic obstructive pulmonary disease (COPD).
arrow_rightIt should be taken at the same time each day, preferably in the evening after food.
arrow_rightIt does not work right away and should not be used to relieve sudden breathing problems. Always keep a fast-acting (rescue) inhaler with you.
arrow_rightYour doctor may take regular blood test to monitor potassium level and the level of this medicine in your body.
arrow_rightNotify 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.
arrow_rightDo not discontinue use without consulting your doctor, even if you feel better.
arrow_rightYou have been prescribed Theotas 400mg Tablet SR for prevention and treatment of asthma and chronic obstructive pulmonary disease (COPD).
arrow_rightIt should be taken at the same time each day, preferably in the evening after food.
arrow_rightIt does not work right away and should not be used to relieve sudden breathing problems. Always keep a fast-acting (rescue) inhaler with you.
arrow_rightYour doctor may take regular blood test to monitor potassium level and the level of this medicine in your body.
arrow_rightNotify 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.
arrow_rightDo not discontinue use without consulting your doctor, even if you feel better.

scienceMechanism of Action (How it works)

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Theotas 400mg Tablet SR is a bronchodilator. It works by relaxing the muscles of the airways and widens airways. This makes breathing easier.

infoDirections for Use (How to Use)

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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. Theotas 400mg Tablet SR may be taken with or without food.

historyMissed Dose Instructions

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If you miss a dose of Theotas 400mg Tablet SR, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.

warningSide Effects

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Vomiting
Headache
Nausea
Upset stomach

medicationDosage & Packaging Details

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Dosage Form

Tablet SR

Manufacturer

Theotas

Administration

Oral Route

Prescription

prescription

action class: Xanthine Derivatives- Respiratoryhabit forming: Notherapeutic class: RESPIRATORY

helpFrequently Asked Questions

How quickly does Theotas 400mg Tablet SR work?

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Theotas 400mg Tablet SR 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 Theotas 400mg Tablet SR?

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While on Theotas 400mg Tablet SR you should avoid foods rich in caffeine like tea, cocoa, coffee, and chocolate. These foods can increase side effects associated with Theotas 400mg Tablet SR. In addition to that, you should avoid alcohol and tobacco while on Theotas 400mg Tablet SR. Discuss with your doctor if you are not sure or have any concerns regarding food restriction.

How should Theotas 400mg Tablet SR be taken?

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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.

Editorial & Medical Review

The information on this page has been compiled and reviewed by healthcare professionals and data editors to ensure accuracy. It is for informational and price-comparison purposes only and should not replace professional medical advice.

Written By

MediSaathi Editorial Team

Last Updated

July 6, 2026

Regularly reviewed

Data Sources & Citations

Central Drugs Standard Control Organisation (CDSCO) — Government of IndiaView Source
National Pharmaceutical Pricing Authority (NPPA) — Government of IndiaView Source
Jan Aushadhi Scheme — Pradhan Mantri Bhartiya Janaushadhi Pariyojana — Government of IndiaView Source

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Is THEOTAS 400MG TABLET SR available at a cheaper price in India?

Price Summary for THEOTAS 400MG TABLET SR

THEOTAS 400MG TABLET SR

7 pharmacies checked

vaccinesMost Viewed Alternatives

Doctor Consultation Required

medical_informationMedicine & Clinical Information

helpFrequently Asked Questions

Editorial & Medical Review

Data Sources & Citations