Theopin 400mg Tablet CR
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Quick Facts
About Theopin 400mg Tablet CR
Theopin 400mg Tablet CR 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.Theopin 400mg Tablet CR 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.
How It Works
Theopin 400mg Tablet CR 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.Theopin 400mg Tablet CR 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.
How to Use
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. Theopin 400mg Tablet CR may be taken with or without food, but it is better to take it at a fixed time.
Storage
Store below 30C
Prescription required. Upload a valid prescription at checkout or via prescription upload.
Composition of Theopin 400mg Tablet CR
Uses of Theopin 400mg Tablet CR
Key Benefits of Theopin 400mg Tablet CR
- In Treatment of Chronic obstructive pulmonary disease (COPD) Theopin 400mg Tablet CR helps the airways in your lungs stay open. It relaxes the muscles of these airways. This makes it easier for air to get in and out. It will relieve symptoms such as tightness in your chest, shortness of breath, wheezing and coughing and help you carry out your daily activities more easily. This medicine is safe and effective. It usually starts to work within a few minutes and the effects can last up to several hours.
Side Effects of Theopin 400mg Tablet CR
- Vomiting
- Headache
- Nausea
- Upset stomach
- Insomnia (difficulty in sleeping)
This is not a complete list of side effects. Consult your doctor if you experience any unusual symptoms.
Safety Advice for Theopin 400mg Tablet CR
It is unsafe to consume alcohol with Theopin 400mg Tablet CR.
Theopin 400mg Tablet CR 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.
Theopin 400mg Tablet CR 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 Theopin 400mg Tablet CR can further decrease the exposure of medicine to the baby.
Theopin 400mg Tablet CR does not usually affect your ability to drive.
Theopin 400mg Tablet CR is safe to use in patients with kidney disease. No dose adjustment of Theopin 400mg Tablet CR is recommended.
Theopin 400mg Tablet CR should be used with caution in patients with liver disease. Dose adjustment of Theopin 400mg Tablet CR may be needed. Please consult your doctor.
Frequently Asked Questions
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Medical information standards
Educational product information for Theopin 400mg Tablet CR. Not a substitute for advice from your treating doctor or healthcare provider.
- Reviewed by
- Nitin Kumar, D.Pharm (UPPC Reg: 63405)Lead Registered Pharmacist · 11 years clinical experience · Drug licence RLF21DL2025001406, RLF20DL2025001420. See our medical review policy.
- Content dates
- Catalogue copy is re-checked under our editorial standards. Pricing and stock update more often at checkout.
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- Vyloo Technologies Pvt. Ltd.
10251, F/F, Library Road, Nawab Ganj, Delhi G.P.O., Delhi, North Delhi- 110006, Delhi, IndiaGSTIN 07AAKCV0933E1ZF, 09AAKCV0933E1ZB. More on our drug licence page.
Authoritative references
- CDSCO (India) — Central Drugs Standard Control Organisation — Indian drug regulator
- Ministry of Health & Family Welfare — Government of India health ministry
- WHO Essential Medicines — World Health Organization essential medicines lists
- National Health Portal (India) — Government of India National Health Portal