OTC · No prescriptionBronchodilator / Anti-asthmatic

Theo Asthalin Syrup 100 Ml New — Side Effects & Warnings

Known side effects of Theo Asthalin Syrup 100 Ml New include Nausea, vomiting, stomach upset, headache, tremor, nervousness, restlessness, palpitations, fast heartbeat, insomnia, dizziness. Not everyone experiences these side effects.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated July 2026

Common Side Effects

Nausea
vomiting
stomach upset
headache
tremor
nervousness
restlessness
palpitations
fast heartbeat
insomnia
dizziness

This is not an exhaustive list. Consult your doctor if you notice any unusual symptoms.

Important Warnings

Use only on medical advice. Overdose can cause serious effects (severe palpitations, vomiting, seizures, arrhythmias). Caution in heart disease, high blood pressure, hyperthyroidism, diabetes, seizure disorders, liver disease, and in elderly. Theophylline levels can be affected by fever, smoking, and many medicines; monitoring may be required for prolonged use. Seek urgent care for chest pain, severe dizziness, worsening breathlessness, or allergic reactions.

Drug Interactions

Theo Asthalin Syrup 100 Ml New may interact with the following:

Macrolide antibiotics (erythromycin/clarithromycin)
fluoroquinolones (ciprofloxacin)
cimetidine
oral contraceptives
fluvoxamine (increase theophylline levels); rifampicin
phenytoin
carbamazepine
smoking (decrease theophylline levels); beta-blockers may reduce salbutamol effect; other sympathomimetics
caffeine
and xanthines increase side effects; diuretics/corticosteroids may increase risk of low potassium with salbutamol

Always tell your doctor about all medicines you are taking, including over-the-counter drugs and supplements.

Pregnancy Safety

Consult doctor (use with caution; only if prescribed)

Alcohol Interaction

Use with caution (may increase side effects like dizziness and palpitations)

Habit Forming

Storage

Store below 25°C, protected from light and moisture. Keep bottle tightly closed. Keep out of reach of children.

Theo Asthalin Syrup 100 Ml New — Safety Summary

Composition: Theophylline + Salbutamol (as Salbutamol sulphate) syrup (strengths vary by brand/batch; check label)
Prescription: Not required (OTC)
Pregnancy: Consult doctor (use with caution; only if prescribed)
Alcohol: Use with caution (may increase side effects like dizziness and palpitations)
Habit forming: No

Theo Asthalin Syrup 100 Ml New — Safety FAQs

What should I do if I experience side effects?

Mild side effects often resolve on their own. If side effects are severe or persistent, stop the medicine and consult your doctor immediately.

Are all listed side effects common?

No. Some side effects are common while others are rare. Not everyone experiences side effects. Consult your doctor if you are concerned.

Can I take this medicine with other drugs?

Some medicines interact with each other. Always inform your doctor about all medicines you are currently taking.

When should I seek emergency help?

Seek immediate medical attention if you experience severe allergic reactions (difficulty breathing, swelling of face/throat), chest pain, or any life-threatening symptoms.

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Safety disclaimer

This information is for educational purposes only and is not a substitute for professional medical advice. If you experience severe side effects, seek medical attention immediately.

Theo Asthalin Syrup 100 Ml New — Side Effects & Warnings

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated July 2026