Prescription requiredAntibiotic

Zithrox XL 100 Sus — Side Effects & Warnings

Known side effects of Zithrox XL 100 Sus include Diarrhoea, nausea, vomiting, abdominal pain, indigestion, headache, dizziness, rash. Not everyone experiences these side effects.

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

Common Side Effects

Diarrhoea
nausea
vomiting
abdominal pain
indigestion
headache
dizziness
rash

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

Important Warnings

Use only for bacterial infections (not viral). Inform doctor if history of allergy to azithromycin/erythromycin/macrolides, liver disease, jaundice with prior antibiotic use, myasthenia gravis, or heart rhythm problems (QT prolongation). Seek urgent care for severe diarrhoea, allergic reactions, or signs of liver injury (yellow eyes/skin, dark urine). Dose adjustment/monitoring may be needed in hepatic impairment.

Drug Interactions

Zithrox XL 100 Sus may interact with the following:

Antacids containing aluminium/magnesium (separate dosing)
warfarin/other anticoagulants (bleeding risk/INR monitoring)
digoxin (increased levels)
cyclosporine
antiarrhythmics/QT-prolonging drugs (e.g.
amiodarone
sotalol
quinolones
some antipsychotics)
ergot derivatives (avoid)
statins (rare myopathy risk)

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

Pregnancy Safety

Consult doctor

Alcohol Interaction

Use with caution

Habit Forming

Storage

Store dry powder at room temperature away from moisture and light. After reconstitution, store as per label (commonly below 25°C; do not freeze) and use within the advised period; keep bottle tightly closed and shake well before use.

Zithrox XL 100 Sus — Safety Summary

Composition: Azithromycin 100 mg/5 mL (as azithromycin dihydrate) oral suspension
Prescription: Required (Rx)
Pregnancy: Consult doctor
Alcohol: Use with caution
Habit forming: No

Zithrox XL 100 Sus — 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.