About
Acrivastine is a fast-acting, non-drowsy antihistamine used to relieve allergy symptoms. It works by blocking the action of histamine — a substance in the body that causes allergic reactions.
It is commonly used to treat:
- Hay fever (allergic rhinitis)
- Pet or dust allergies
- Skin allergies such as hives (urticaria)
- Allergic reactions causing itching, redness, or swelling
Acrivastine is usually available in the form of:
- Capsules
- Tablets
- Occasionally combined with pseudoephedrine for nasal congestion (e.g., acrivastine with pseudoephedrine capsules)
How and When to Use It
Take acrivastine exactly as directed by your doctor or pharmacist.
Dosage: The usual adult dose is one 8 mg capsule three times a day, as needed.
Acrivastine is not generally recommended for children under 12 years old.
Take each dose with a glass of water. It can be taken with or without food.
Do not exceed the recommended dose. If symptoms persist, consult your doctor.
Contraindications
Acrivastine should not be taken if you have:
- Allergy to acrivastine or any other antihistamine
- Severe kidney disease
- Are pregnant or breastfeeding, unless advised by a doctor
- Are taking other medications that cause drowsiness
Side Effects
Acrivastine is generally well tolerated, but like all medicines, it can cause side effects in some people.
Common side effects:
- Headache
- Drowsiness (less common than older antihistamines)
- Dry mouth
- Fatigue
Rare but serious side effects:
- Allergic reaction (rash, swelling, difficulty breathing)
- Palpitations or fast heartbeat
- Liver function changes (very rare)
Seek immediate medical attention if you experience swelling of the face, lips, tongue, or throat, or difficulty breathing.
Pregnancy, Breastfeeding & Fertility
There is limited information on the safety of acrivastine during pregnancy and breastfeeding.
It should only be used if clearly needed and recommended by a healthcare provider.
There is no known effect of acrivastine on fertility in men or women.
Interactions With Other Medications
Some medications and substances can interact with acrivastine:
- Alcohol (may increase drowsiness)
- Other antihistamines (can increase side effects)
- Sedatives, sleeping pills, or anxiety medications (may cause excessive drowsiness)
- Decongestants (if combined products are used)
Frequently Asked Questions
How quickly does acrivastine work?
Acrivastine usually starts working within 15–30 minutes to relieve allergy symptoms.
Can I take acrivastine every day?
Yes, it can be taken daily during allergy season or as prescribed, but always follow the recommended dosage on the packaging or from your doctor.
Is it safe to drive after taking acrivastine?
Generally yes, because acrivastine is a non-drowsy antihistamine. However, some people may still experience mild drowsiness, so check how you feel first.
Can I drink alcohol while taking it?
It is best to avoid alcohol, as it may increase drowsiness or reduce the effectiveness of the medication.
Is acrivastine suitable for children?
Acrivastine is usually suitable for children over 12 years old. Check the packaging or ask a doctor or pharmacist for the correct pediatric dose.
What should I do if I miss a dose?
Take the missed dose as soon as you remember, unless it’s almost time for your next one. Do not double the dose.
Medical Disclaimer: This information is provided for educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a healthcare professional before starting, stopping, or changing any medication.
Last reviewed: June 2026
