Prescription requiredAnti-allergic (Antihistamine)

Bilahist M Tab — Side Effects & Warnings

Known side effects of Bilahist M Tab include Headache, drowsiness, dizziness, fatigue, abdominal pain, nausea, dry mouth. Not everyone experiences these side effects.

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

Common Side Effects

Headache
drowsiness
dizziness
fatigue
abdominal pain
nausea
dry mouth

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

Important Warnings

Use with caution in severe kidney impairment, especially if used with P-gp inhibitors. May cause drowsiness in some people—avoid driving or operating machinery if affected. Do not exceed prescribed dose. Seek medical help for swelling of face/lips, breathing difficulty, or severe rash.

Drug Interactions

Bilahist M Tab may interact with the following:

Fruit juices (grapefruit/orange/apple) may reduce effect
P-gp inhibitors such as ketoconazole
erythromycin
cyclosporine
ritonavir may increase bilastine levels
other sedating medicines/alcohol may increase drowsiness

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 below 25°C in a dry place, protected from moisture and light. Keep out of reach of children.

Bilahist M Tab — Safety Summary

Composition: Bilastine 20 mg tablet
Prescription: Required (Rx)
Pregnancy: Consult doctor
Alcohol: Use with caution
Habit forming: No

Bilahist M Tab — 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.

Get help from a doctor

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Discuss side effects with a qualified doctor online.

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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.