alex syrup - Dextromethorphan Hydrobromide (5mg/5ml) + Guaifenesin (100mg/5ml) medicine

Alex Syrup: Comprehensive Medicine Guide

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🏭 Glenmark Pharmaceuticals Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 24, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for cough relief.
Reviewed by
SaathiMed Expert Panel | Sep 24, 2026

When to Call Your Doctor IMMEDIATELY

  • Blood in sputum or vomit
  • Severe abdominal pain
  • Chest pain or difficulty breathing
  • Severe headache with visual changes
  • Sudden swelling of face, lips, or throat
  • Yellowing of skin or eyes
  • Decreased urine output

If experiencing severe symptoms, call emergency services immediately.

What is alex syrup used for?

This medicine is a combination cough syrup containing dextromethorphan (a cough suppressant) and guaifenesin (an expectorant). It is used to treat dry cough and to help loosen mucus in productive coughs.

  • Generic Name: Dextromethorphan Hydrobromide + Guaifenesin
  • Manufacturer: Glenmark Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 alex syrup के बारे में (Hindi Summary)

उपयोग: यह दवा सूखी खांसी और कफ वाली खांसी के इलाज के लिए इस्तेमाल की जाती है। इसमें डेक्सट्रोमेथोर्फन और गुआइफेनेसिन होते हैं, जो खांसी को कम करने और बलगम को पतला करने में मदद करते हैं।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में नींद आना, चक्कर आना, जी मिचलाना और पेट में परेशानी शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन एलर्जी की प्रतिक्रिया हो सकती है।

सुरक्षा सलाह: इस दवा को डॉक्टर की सलाह के अनुसार ही लें। इसके सेवन के दौरान वाहन चलाने या मशीनरी चलाने से बचें। शराब का सेवन न करें। यदि खांसी 7 दिनों से अधिक रहती है, तो डॉक्टर से मिलें।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 alex syrup Uses & Benefits

[{"condition":"Dry, non-productive cough","description":"This medicine helps suppress the cough reflex and provides temporary relief from irritating dry coughs.","evidence":"Well-established"},{"condition":"Productive cough with thick mucus","description":"The guaifenesin component helps thin and loosen mucus, making it easier to cough out.","evidence":"Well-established"}]

Off-label uses: []

Primary treatment for: Cough

Also treats: Common cold, Upper respiratory tract infection

📋 Drug Information

Generic Name(s)Dextromethorphan Hydrobromide + Guaifenesin
Brand NameAlex Syrup
ManufacturerGlenmark Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassRESPIRATORY
Action ClassAntitussive and Expectorant Combination
Route of AdministrationOral
StorageStore at room temperature (15-30°C) away from direct sunlight and moisture. Keep the bottle tightly closed.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine with food to reduce stomach upset.
2
Stay well hydrated throughout the day to help loosen mucus.
3
Avoid alcohol while taking this medicine.
4
Do not take more than the prescribed dose.
5
Consult your doctor if symptoms persist beyond 7 days.
6
Report any unusual drowsiness or dizziness immediately.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Dry cough
This medicine is commonly prescribed for this.
Likely Use
Productive cough
This medicine can help thin mucus.
Likely Use
Fever
This medicine is not a primary fever reducer.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionDextromethorphan is rapidly absorbed from the gastrointestinal tract after oral administration. Guaifenesin is also absorbed from the gastrointestinal tract. The syrup formulation allows for quick absorption.
DistributionDextromethorphan is widely distributed in the body, including the brain. Guaifenesin distributes to the respiratory tract and other tissues. Both ingredients cross the placenta and are excreted in breast milk.
Protein BindingDextromethorphan is approximately 60-70% bound to plasma proteins. Guaifenesin's protein binding is not well established.
MetabolismDextromethorphan is metabolized in the liver by cytochrome P450 enzymes, primarily CYP2D6, to its active metabolite dextrorphan. Guaifenesin is metabolized in the liver and possibly in the lungs.
Half-LifeThe elimination half-life of dextromethorphan is approximately 2-4 hours. The half-life of guaifenesin is about 1 hour.
ExcretionDextromethorphan and its metabolites are excreted primarily in the urine. Guaifenesin is also excreted in the urine.
BioavailabilityThe oral bioavailability of dextromethorphan is about 10-20% due to first-pass metabolism. Guaifenesin's bioavailability is not well established.
Onset of ActionCough suppression typically begins within 15-30 minutes after oral administration. Expectorant effects may take longer to manifest.
Peak Plasma TimePeak plasma concentrations of dextromethorphan are reached in about 2-3 hours. Guaifenesin peaks in about 1 hour.
Duration of ActionThe cough suppressant effect of dextromethorphan lasts about 4-6 hours. Guaifenesin's expectorant effect lasts about 4-6 hours.

How It Works

This medicine combines two active ingredients with different mechanisms. Dextromethorphan hydrobromide acts on the cough center in the medulla oblongata of the brain to suppress the cough reflex. It is a centrally acting cough suppressant that does not cause sedation or respiratory depression at usual doses. Guaifenesin is an expectorant that works by increasing the volume and reducing the viscosity of mucus in the respiratory tract, which helps in clearing the airways.

Mechanism Steps

1
Cough suppression: Dextromethorphan binds to sigma-1 and NMDA receptors in the brain's cough center, reducing the sensitivity of the cough reflex.
2
Mucus thinning: Guaifenesin stimulates the secretion of respiratory tract fluids, which increases the water content of mucus and reduces its thickness.
3
Easier expectoration: The thinned mucus is more easily moved by cilia and coughed out, helping to clear the airways.

💡 How to Take alex syrup

Strength: Syrup containing dextromethorphan hydrobromide 5 mg/5 ml and guaifenesin 100 mg/5 ml.

1Shake the bottle well before use.
2Use a measuring cup or spoon to measure the correct dose.
3Take orally with or without food.
4Do not exceed the recommended dose.
5Wash the measuring cup after each use.

Dosage Information

Adult DosageThe usual adult dose of this medicine is 10 ml (2 teaspoons) every 4 hours as needed, not to exceed 60 ml in 24 hours. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may be more sensitive to the side effects of this medicine. Use with caution and consult a doctor for appropriate dosing.
Renal ImpairmentDose adjustment may be needed in patients with renal impairment. Consult a doctor.
Hepatic ImpairmentDose adjustment may be needed in patients with hepatic impairment. Consult a doctor.
Maximum Daily Dose60 ml in 24 hours for adults.

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset.
Alcohol
Avoid
May increase drowsiness.

⏰ 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 alex syrup

✅ Common Side Effects

Drowsiness (Common (5-10%))
Avoid driving or operating machinery. Usually resolves on its own.
Dizziness (Common (5-10%))
Sit or lie down until it passes. Avoid sudden movements.
Nausea (Common (5-10%))
Take with food or milk to reduce stomach upset.
Vomiting (Uncommon (1-5%))
Stay hydrated. Consult doctor if persistent.
Stomach discomfort (Common (5-10%))
Take with a meal or snack.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience rash, itching, swelling of face, lips, or throat, or difficulty breathing.
Hallucinations (Rare (<0.1%))
Stop the medicine and consult a doctor immediately.
Serotonin syndrome (Rare (<0.1%))
Seek emergency care if you have agitation, confusion, rapid heart rate, high blood pressure, or muscle twitching.

⚠️ Rare Side Effects

Respiratory depression
Seek immediate medical help if breathing becomes slow or shallow.
Blood disorders
Report unusual bruising or bleeding to your doctor.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
MAO inhibitors Major
SSRIs Major
CYP2D6 inhibitors Moderate
CNS depressants Moderate
Alcohol Moderate

🚨 Major Interactions

  • MAO inhibitors (e.g., phenelzine, tranylcypromine)
  • SSRIs (e.g., fluoxetine, paroxetine)

⚡ Moderate Interactions

  • CYP2D6 inhibitors (e.g., quinidine, terbinafine)
  • CNS depressants (e.g., alcohol, benzodiazepines)

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine as it can increase drowsiness, dizziness, and the risk of other side effects.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to dextromethorphan or guaifenesin","Concurrent use with MAO inhibitors","Chronic cough due to smoking, asthma, or emphysema","Cough with excessive phlegm","Children under 4 years of age"]

⚠️ Warnings & Precautions

["Do not exceed the recommended dose.","Avoid driving or operating machinery until you know how this medicine affects you.","Do not use for chronic cough or cough with excessive mucus without medical advice.","Consult a doctor if symptoms persist beyond 7 days or are accompanied by fever, rash, or persistent headache.","Keep out of reach of children."]

🤱 Lactation Safety

Dextromethorphan and guaifenesin are excreted in breast milk. Consult your doctor before using this medicine while breastfeeding.

💊 Overdose Management

Overdose may cause nausea, vomiting, drowsiness, dizziness, hallucinations, and in severe cases, respiratory depression. Seek immediate medical attention or contact a poison control center. Treatment is supportive and symptomatic.

⏰ 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 dose.

Additional Safety Advice

General Safety

Do not exceed the recommended dose of this medicine. Avoid driving or operating heavy machinery until you know how this medicine affects you, as it may cause drowsiness or dizziness. Do not drink alcohol while taking this medicine, as it can increase drowsiness and other side effects. If you are pregnant or breastfeeding, consult your doctor before using this medicine. Do not use this medicine for a chronic cough that lasts more than 7 days, or for a cough accompanied by excessive phlegm, unless directed by a doctor. Keep out of reach of children. Store at room temperature away from direct sunlight. Do not use if the seal is broken or the syrup is discolored.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the side effects of this medicine, especially drowsiness and dizziness. Use with caution.

🤰 Pregnancy Planning (TTC)

Consult your doctor before using this medicine if you are pregnant or planning to become pregnant.

🏥 Post-Surgery Considerations

Consult your doctor before using this medicine after surgery, as it may interact with other medications.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine, as it may cause dry mouth.

💚 Lifestyle Tips for Better Results

🏃
Stay hydrated to help thin mucus.
🥗
Use a humidifier to add moisture to the air.
😴
Avoid smoking and exposure to secondhand smoke.
💧
Get plenty of rest to help your body recover.
🧘
Gargle with warm salt water to soothe a sore throat.

🏋️ Exercise Considerations

Avoid strenuous exercise if you feel dizzy or drowsy. Light activity is fine if you feel up to it.

🥗 Diet Recommendations

Drink warm fluids like tea or soup.
Avoid cold drinks and ice cream.
Include honey in warm water to soothe the throat.

💼 Impact on Daily Work & Life

This medicine may cause drowsiness, so avoid driving or operating heavy machinery until you know how it affects you. It may affect your ability to work if your job requires alertness.

🛑 When to Stop This Medicine

Stop taking this medicine and consult a doctor if your cough persists for more than 7 days, or if you experience severe side effects.

📅 Long-Term Use Effects

Long-term use of this medicine is not recommended without medical supervision. Prolonged use may lead to dependence on dextromethorphan or mask underlying conditions. Consult your doctor if you need to use it for more than 7 days.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Steam inhalation

Helps loosen mucus and soothe airways.

Evidence: Well-established
Honey and warm water

Soothes the throat and can reduce cough.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

Not established from the available information.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ 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

Carry this medicine in its original packaging with a copy of the prescription. Store at room temperature and protect from direct sunlight. If traveling across time zones, continue with your regular dosing schedule as advised by your doctor. Check customs regulations for carrying medicines.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old office worker with a persistent dry cough
Started this medicine as prescribed for a dry cough that was interfering with sleep. Within 2 days, the cough frequency reduced significantly. Emphasized taking it with food to prevent stomach upset.
💡 Lesson: Consistency with prescribed dose and taking with food improves both efficacy and tolerability.
👤 A 50-year-old with a productive cough due to a cold
Used this medicine for a week. The guaifenesin helped thin the mucus, making it easier to cough out. Experienced mild drowsiness, so avoided driving.
💡 Lesson: This medicine can help with productive coughs by thinning mucus, but be aware of drowsiness.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine typically starts working within 15-30 minutes after taking it.

Q: Can I take it at night?

A: Yes, but it may cause drowsiness, so it is often taken at bedtime for cough relief.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • 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?

🛑 Myths vs. Facts

  • Myth: This medicine can cure any type of cough.
    Fact: This medicine is only for temporary relief of cough symptoms and does not treat the underlying cause.
  • Myth: It is safe to take more than the recommended dose for faster relief.
    Fact: Taking more than the recommended dose can lead to serious side effects and is not safer or more effective.

📊 Comparison with Similar Medicines

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