What is Corvent PD Syrup used for?

This medicine is a combination of choline theophyllinate and terbutaline, used to treat asthma and other breathing problems by relaxing the airways. It is available as a syrup and is taken orally, usually two to three times a day. It should not be used for sudden severe asthma attacks.

Generic Name: Choline Theophyllinate (50mg/5ml) + Terbutaline (1.25mg/5ml)
Manufacturer: Corvin Pharmaceuticals
Form: Allopathy
Pregnancy Category: Consult doctor
Prescription Required: Yes

🇮🇳 Corvent PD Syrup के बारे में (Hindi Summary)

उपयोग: यह दवा चोलीन थियोफिलिनेट और टर्ब्यूटलाइन का संयोजन है, जिसका उपयोग अस्थमा, क्रोनिक ब्रोंकाइटिस और अन्य श्वसन रोगों में सांस लेने में कठिनाई, घरघराहट और खांसी के इलाज के लिए किया जाता है। यह वायुमार्ग की मांसपेशियों को आराम देकर सांस लेने में मदद करती है। यह दवा तुरंत अस्थमा के दौरे के लिए नहीं है; उसके लिए रेस्क्यू इनहेलर का उपयोग करें।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में मतली, उल्टी, पेट खराब, सिरदर्द, बेचैनी, हाथ-पैर कांपना और धड़कन तेज होना शामिल हैं। ये आमतौर पर हल्के होते हैं और कुछ समय में ठीक हो जाते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन यदि आपको तेज धड़कन, सीने में दर्द, सांस लेने में तकलीफ, चक्कर आना, या चेहरे, होंठ या गले में सूजन हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा का उपयोग डॉक्टर के निर्देशानुसार ही करें। खुराक को कम या ज्यादा न करें। इसे भोजन के साथ लेने से पेट की परेशानी कम हो सकती है। इस दवा के साथ शराब और कैफीन का सेवन न करें। यदि आपको दिल की बीमारी, उच्च रक्तचाप, थायरॉइड की समस्या, मधुमेह, या गुर्दे/यकृत की बीमारी है, तो डॉक्टर को बताएं। गर्भावस्था या स्तनपान के दौरान डॉक्टर से सलाह लें।

💊 Corvent PD Syrup Uses & Benefits

[{"condition":"Asthma","description":"Used to relieve bronchospasm and improve breathing in patients with asthma.
It helps control symptoms but is not a substitute for a rescue inhaler during acute attacks.","evidence":"Well-established"},{"condition":"Chronic Obstructive Pulmonary Disease (COPD)","description":"Helps relax airways and reduce breathlessness in chronic bronchitis and emphysema.
It is used as part of a comprehensive treatment plan.","evidence":"Well-established"},{"condition":"Bronchospasm","description":"Provides relief from reversible airway obstruction caused by various respiratory conditions.","evidence":"Well-established"},{"condition":"Bronchitis","description":"May be used to ease breathing in acute or chronic bronchitis when bronchospasm is present.","evidence":"Moderate"}]

Off-label uses: [{"condition":"Apnea of prematurity","description":"Methylxanthines like theophylline have been used off-label in premature infants to stimulate breathing, but this is a highly specialized use and not for this syrup formulation.","evidence":"Limited"}]

Primary treatment for: Asthma

Also treats: Chronic Obstructive Pulmonary Disease (COPD), Bronchitis, Bronchospasm

📋 Drug Information

Generic Name(s)	Choline Theophyllinate (50mg/5ml) + Terbutaline (1.25mg/5ml)
Brand Name	Corvent PD Syrup
Manufacturer	Corvin Pharmaceuticals
Packaging / Form	bottle of 100 ml Syrup (Allopathy)
Therapeutic Class
Action Class
Route of Administration	Oral
Storage	Store at room temperature (15-30°C) in a dry place, away from direct sunlight. Do not refrigerate. Keep the bottle tightly closed.
Shelf Life	24 months from the date of manufacture.
WHO Guideline	Not established from the available information.
ICMR Guideline	Not established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1

Always prescribe this medicine with clear instructions on dosing frequency and duration.

2

Warn patients not to use this syrup for acute asthma attacks; ensure they have a rescue inhaler.

3

Monitor heart rate and blood pressure regularly, especially in elderly patients.

4

Check for drug interactions, particularly with beta-blockers, MAOIs, and ciprofloxacin.

5

Advise patients to avoid alcohol and caffeine while taking this medicine.

6

Consider dose adjustment in patients with liver or kidney impairment.

7

Educate patients about the signs of theophylline toxicity, such as nausea, tremor, and palpitations.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅

Wheezing

This medicine is commonly prescribed for wheezing due to bronchospasm.

Likely Use

✅

Shortness of breath

It helps relax airways and improve breathing.

Likely Use

❌

Fever

This medicine is not a primary fever reducer.

Not Primary

✅

Chest tightness

It can relieve chest tightness associated with asthma.

Likely Use

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionCholine theophyllinate is rapidly absorbed from the gastrointestinal tract after oral administration and is converted to theophylline. Terbutaline is also well absorbed orally, although its oral bioavailability is lower than when given by inhalation. Food may affect the absorption rate of theophylline; taking with food can reduce peak concentration fluctuations.

DistributionTheophylline distributes widely throughout body fluids and tissues, including the lungs, and crosses the placenta and into breast milk. Terbutaline also distributes to various tissues, including the lungs, and crosses the placenta. Protein binding for theophylline is approximately 40-60%, while terbutaline binding is about 25%.

Protein BindingTheophylline: approximately 40-60% bound to plasma proteins. Terbutaline: approximately 25% bound to plasma proteins.

MetabolismTheophylline is metabolized in the liver by cytochrome P450 enzymes, primarily CYP1A2 and CYP3A4. Terbutaline undergoes extensive first-pass metabolism in the liver and gut wall, mainly by conjugation with sulfate and glucuronic acid.

Half-LifeTheophylline: typically 3-8 hours in adults, but can be longer in elderly, patients with liver disease, or those on certain interacting drugs. Terbutaline: approximately 3-4 hours.

ExcretionTheophylline and its metabolites are excreted primarily in the urine. Terbutaline and its metabolites are also excreted mainly in the urine, with a small amount in feces.

BioavailabilityTheophylline: oral bioavailability is high, around 90-100%. Terbutaline: oral bioavailability is approximately 10-15% due to first-pass metabolism.

Onset of ActionTerbutaline: bronchodilation begins within 15-30 minutes after oral administration. Theophylline: onset of bronchodilation is slower, typically within 30-60 minutes.

Peak Plasma TimeTheophylline: 1-2 hours for immediate-release formulations. Terbutaline: 1-2 hours after oral administration.

Duration of ActionTheophylline: bronchodilation lasts 6-12 hours. Terbutaline: bronchodilation lasts 4-6 hours after oral administration.

How It Works

This medicine combines two bronchodilators with different but complementary mechanisms. Choline theophyllinate is a prodrug that is converted in the body to theophylline, which inhibits phosphodiesterase enzymes, leading to increased levels of cyclic AMP (cAMP) in smooth muscle cells. This causes relaxation of bronchial smooth muscle and widening of the airways. Theophylline also blocks adenosine receptors, which contributes to bronchodilation and may reduce inflammation. Terbutaline is a selective beta-2 adrenergic agonist that binds to beta-2 receptors on bronchial smooth muscle, stimulating the production of cAMP and causing rapid relaxation of the airways. Together, they work to open the airways, making it easier to breathe.

Mechanism Steps

1

Choline theophyllinate conversion: Choline theophyllinate is absorbed and converted to theophylline in the body.

2

Phosphodiesterase inhibition: Theophylline inhibits phosphodiesterase enzymes, increasing cAMP levels in bronchial smooth muscle.

3

Adenosine receptor blockade: Theophylline blocks adenosine receptors, contributing to bronchodilation and reduced inflammation.

4

Beta-2 receptor stimulation: Terbutaline binds to beta-2 adrenergic receptors on bronchial smooth muscle.

5

Increased cAMP and smooth muscle relaxation: Beta-2 stimulation increases cAMP, leading to relaxation of bronchial smooth muscle and airway widening.

💡 How to Take Corvent PD Syrup

Strength: Each 5 ml contains Choline Theophyllinate 50 mg and Terbutaline 1.25 mg.

1Shake the bottle well before use.

2Use the measuring cup or spoon provided to measure the exact dose.

3Take the syrup with or without food, but preferably with food to reduce stomach upset.

4Swallow the syrup directly; do not mix with other liquids unless advised.

5Rinse the measuring cup after use.

6Wash your hands before and after handling the medicine.

Dosage Information

Adult Dosage	The usual adult dose of this syrup is 10 ml two to three times a day, or as directed by your doctor. The dose may be adjusted based on your condition, response to treatment, and any underlying medical conditions. Do not exceed the recommended dose. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric Dosage	Pediatric dosing is not established from available information. Consult a pediatrician.
Elderly Dosage	Elderly patients may be more sensitive to the effects of this medicine, especially cardiac effects and tremor. Dose adjustment may be required. Consult your doctor.
Renal Impairment	In patients with renal impairment, dose reduction may be necessary. Consult your doctor for individualized dosing.
Hepatic Impairment	In patients with hepatic impairment, dose reduction may be necessary due to reduced metabolism of theophylline. Consult your doctor.
Maximum Daily Dose	The maximum daily dose should not exceed 30 ml per day, or as prescribed by your doctor. Do not exceed the prescribed dose.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food

Take with meals

Reduces stomach upset.

Caffeine-containing foods and drinks

Limit intake

Can increase nervousness, tremor, and insomnia.

Grapefruit juice

Avoid

May increase theophylline levels.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed

→ Take the missed dose as soon as you remember.

💡 Continue with the regular schedule.

📌 More than half the dosing interval has passed

→ Skip the missed dose.

💡 Do not double dose to catch up.

⚠️ Side Effects of Corvent PD Syrup

✅ Common Side Effects

Nausea (Common (5-10%))

Take with food to reduce stomach upset. If it persists, consult your doctor.

Headache (Common (5-10%))

Usually resolves on its own. Stay hydrated. Consult doctor if severe or persistent.

Tremor (Common (5-10%))

Often decreases with continued use. Avoid caffeine. Consult doctor if bothersome.

Palpitations (Common (5-10%))

Report to your doctor if you feel a fast or pounding heartbeat.

Restlessness (Common (5-10%))

Usually temporary. Avoid taking close to bedtime if it affects sleep.

🚨 Serious Side Effects

Severe palpitations or irregular heartbeat (Rare (<0.1%))

Seek immediate medical attention.

Chest pain (Rare (<0.1%))

Call emergency services or go to the nearest emergency room.

Severe allergic reaction (swelling of face, lips, throat, difficulty breathing) (Rare (<0.1%))

Seek emergency medical help immediately.

Seizures (Very rare (<0.01%))

This is a medical emergency. Call for immediate assistance.

⚠️ Rare Side Effects

Hyperglycemia (increased blood sugar)

Monitor blood sugar if diabetic. Consult doctor if levels rise.

Hypokalemia (low potassium)

Report muscle weakness or cramps to your doctor.

Sleep disturbances

Avoid taking in the evening. Consult doctor if persistent.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug	Severity	Effect
Propranolol	Major
Ciprofloxacin	Major
MAOIs	Major
Tricyclic antidepressants	Major
Furosemide	Moderate
Corticosteroids	Moderate
Digoxin	Moderate
Caffeine	Minor
Antacids	Minor

🚨 Major Interactions

Beta-blockers (e.g., propranolol)
Monoamine oxidase inhibitors (MAOIs)
Tricyclic antidepressants
Ciprofloxacin

⚡ Moderate Interactions

Diuretics (e.g., furosemide)
Corticosteroids
Digoxin

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine. Alcohol can increase the risk of side effects such as dizziness, drowsiness, and rapid heartbeat. It may also affect the metabolism of theophylline.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to choline theophyllinate, terbutaline, or any component of the formulation","Severe cardiac disease, including arrhythmias","Uncontrolled hypertension","Hyperthyroidism","Severe renal or hepatic impairment","Children under 2 years (unless directed by a pediatrician)"]

⚠️ Warnings & Precautions

["Do not use for acute asthma attacks; use a rescue inhaler.","Use with caution in elderly patients.","May cause dizziness; avoid driving or operating machinery until you know how it affects you.","Avoid alcohol and caffeine.","Inform your doctor if you have diabetes, heart disease, thyroid problems, or kidney/liver disease.","Do not exceed the prescribed dose.","Keep out of reach of children."]

🤱 Lactation Safety

Theophylline and terbutaline are excreted in breast milk. Caution is advised. Consult your doctor before breastfeeding.

💊 Overdose Management

Overdose can cause severe nausea, vomiting, restlessness, tremor, palpitations, seizures, and cardiac arrhythmias. Seek immediate medical attention. Treatment is supportive and symptomatic. There is no specific antidote. Gastric lavage may be considered if taken recently. Monitor vital signs and electrolytes.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose to catch up.

Additional Safety Advice

General Safety

Safety is paramount when using this medicine. Always follow your doctor's prescription exactly. Do not increase or decrease the dose without consulting your doctor. Take the syrup with or without food, but taking it with food may help reduce stomach upset. Avoid drinking alcohol while taking this medicine, as it can increase the risk of side effects and make you feel more drowsy or dizzy. Do not drive or operate heavy machinery until you know how this medicine affects you, as it can cause dizziness or tremors. Inform your doctor if you have heart disease, high blood pressure, thyroid problems, diabetes, or kidney or liver disease. Do not use this medicine for a sudden asthma attack; use your rescue inhaler instead. Keep all follow-up appointments and get regular check-ups, including heart and lung function tests, as advised by your doctor. Store the syrup at room temperature, away from direct sunlight and moisture. Keep it out of reach of children. Do not use it after the expiry date. If you are pregnant, planning to become pregnant, or breastfeeding, consult your doctor before using this medicine.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more sensitive to the cardiac and central nervous system effects of this medicine. Dose reduction may be necessary. Monitor heart rate, blood pressure, and renal function regularly.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before taking this medicine. Theophylline and terbutaline may affect pregnancy. Your doctor will weigh the benefits and risks.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist if you are taking this medicine before surgery. It may interact with anesthetic agents and affect heart rate. Your doctor may advise temporary discontinuation.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine. It may cause dry mouth or interact with certain dental anesthetics. Maintain good oral hygiene.

💚 Lifestyle Tips for Better Results

🏃

Avoid smoking and exposure to secondhand smoke.

🥗

Maintain a healthy weight to reduce breathing effort.

😴

Practice breathing exercises as advised by your doctor.

💧

Get adequate rest and sleep.

🧘

Stay hydrated to help thin mucus.

🌞

Avoid known allergens and pollutants.

🏋️ Exercise Considerations

Avoid strenuous exercise if you have breathing difficulties. Consult your doctor before starting any exercise program. Warm up gradually and use your rescue inhaler if needed.

🥗 Diet Recommendations

Eat a balanced diet rich in fruits and vegetables.

Limit caffeine intake.

Avoid grapefruit juice.

Stay well hydrated.

Include omega-3 fatty acids if tolerated.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or tremor, which can affect your ability to drive or operate machinery. Avoid these activities until you know how the medicine affects you. It may also cause restlessness, which can impact sleep.

🛑 When to Stop This Medicine

Do not stop taking this medicine without consulting your doctor. If you experience severe side effects, contact your doctor immediately. Your doctor will decide if and when to stop the medicine.

📅 Long-Term Use Effects

Long-term use of this medicine may lead to tolerance, reduced effectiveness, and potential cardiac effects. Regular monitoring of heart function, theophylline levels, and electrolytes is recommended. Do not stop suddenly without consulting your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Inhaled bronchodilators

Inhaled beta-agonists and anticholinergics are often preferred for rapid relief and have fewer systemic side effects.

Evidence: Well-established

Inhaled corticosteroids

Used as controller therapy for asthma to reduce inflammation.

Evidence: Well-established

Leukotriene receptor antagonists

Oral medications that can help control asthma symptoms.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific vaccine interactions are known. However, patients with chronic respiratory diseases should receive annual influenza and pneumococcal vaccinations as advised by their doctor.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging with a copy of your prescription. Keep it in your carry-on luggage to avoid temperature extremes. Store at room temperature and protect from direct sunlight. If crossing time zones, adjust dosing times gradually as advised by your doctor. Check customs regulations for carrying prescription medicines.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old man with chronic asthma

He was prescribed this syrup for his asthma symptoms. He initially experienced mild tremors and palpitations, which subsided after a week. He learned to take it with food to reduce stomach upset and avoided caffeine. His breathing improved significantly, and he was able to reduce his rescue inhaler use.

💡 Lesson: Taking the medicine with food and avoiding caffeine can improve tolerability. Mild side effects often diminish with continued use.

👤 A 60-year-old woman with COPD

She started this syrup as part of her COPD management. Her doctor monitored her heart rate and potassium levels regularly. She was advised to avoid alcohol and to report any signs of toxicity. She found that taking the evening dose before 6 PM helped her sleep better.

💡 Lesson: Regular monitoring and timing doses earlier in the day can help manage side effects like insomnia.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: Terbutaline starts working within 15-30 minutes, while theophylline takes about 30-60 minutes. The full effect may take a few hours.

Q: Can I take this medicine for an asthma attack?

A: No, this medicine is not for immediate relief of an acute asthma attack. Use your rescue inhaler as prescribed.

Q: What should I do if I miss a dose?

A: If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

Q: Is it safe to take during pregnancy?

A: Consult your doctor. Theophylline and terbutaline cross the placenta. Use only if the potential benefit justifies the risk.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

Can I take this medicine long-term?
Will it affect my heart?
Can I drive after taking this medicine?
Does it interact with my blood pressure medicine?
What if I miss a dose?
Can I drink alcohol while taking this?

🔄 Substitutes for Corvent PD Syrup

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

Myth: This medicine can be used for immediate relief of an asthma attack.
Fact: This medicine is not a rescue inhaler. For sudden severe attacks, use a fast-acting inhaler as prescribed.
Myth: It is safe to take extra doses if breathing difficulty worsens.
Fact: Taking extra doses can lead to serious side effects. Always follow your doctor's prescription.
Myth: This medicine is safe for everyone.
Fact: It is not suitable for people with certain heart conditions, uncontrolled high blood pressure, or hyperthyroidism.

🔄 Alternative Options

Generic Alternatives

Choline Theophyllinate + Terbutaline Syrup (generic)

Brand Alternatives

Ainavent PD Syrup

📊 Comparison with Similar Medicines

[{"medicine":"Ainavent PD Syrup","active_ingredients":"Choline Theophyllinate + Terbutaline","route":"Oral","primary_use":"Asthma, COPD"},{"medicine":"Theophylline + Terbutaline Syrup","active_ingredients":"Theophylline + Terbutaline","route":"Oral","primary_use":"Asthma, COPD"},{"medicine":"Salbutamol + Theophylline Syrup","active_ingredients":"Salbutamol + Theophylline","route":"Oral","primary_use":"Asthma, COPD"}]

Ainavent PD Syrup: Complete Medicine Guide

When to Call Your Doctor IMMEDIATELY

What is Corvent PD Syrup used for?

🇮🇳 Corvent PD Syrup के बारे में (Hindi Summary)

💊 Corvent PD Syrup Uses & Benefits

📋 Drug Information

👨‍⚕️ Doctor's Practical Tips

🔍 Is This Medicine Right for Your Symptom?

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

How It Works

Mechanism Steps

💡 How to Take Corvent PD Syrup

Dosage Information

Dosage Timeline

🍽️ Food Timing Guide

⏰ What to Do If You Miss a Dose

⚠️ Side Effects of Corvent PD Syrup

✅ Common Side Effects

🚨 Serious Side Effects

⚠️ Rare Side Effects

🔬 Drug Interactions

🚨 Major Interactions

⚡ Moderate Interactions

🍷 Alcohol Interaction

🔎 Check Your Other Medicines

🛡️ Safety & Warnings

🚫 Contraindications

⚠️ Warnings & Precautions

🤱 Lactation Safety

💊 Overdose Management

⏰ Missed Dose

Additional Safety Advice

👴 Special Considerations for Elderly

💡 For Patients Above 65

🤰 Pregnancy Planning (TTC)

🏥 Post-Surgery Considerations

🦷 Dental Procedures

💚 Lifestyle Tips for Better Results

🏋️ Exercise Considerations

🥗 Diet Recommendations

💼 Impact on Daily Work & Life

🛑 When to Stop This Medicine

📅 Long-Term Use Effects

🌿 Non-Medicine Approaches

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

📦 Storage Guide

✅ DO

❌ DON'T

✅ DO

❌ DON'T

✅ DO

❌ DON'T

✈️ Traveling with This Medicine

💰 Cost Analysis & Savings

👥 Real Patient Stories

💬 Questions Patients Often Ask

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

🔄 Substitutes for Corvent PD Syrup

🛑 Myths vs. Facts

🔄 Alternative Options

Generic Alternatives

Brand Alternatives

📊 Comparison with Similar Medicines

😊 Was this information helpful?

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