Acrivastine Antihistamine Treatment: who its for, how it works & who shouldn't take it

During an allergic reaction, your immune system releases a chemical called histamine, which causes inflammation that leads to the symptoms of an allergy. Antihistamines work by opposing the actions of histamine, stopping it from binding to its target sites in the body, reducing overall inflammation.

The chemical structure of non-drowsy antihistamines makes them less likely to enter the brain through what is known as the blood-brain barrier. This makes them less likely to cause drowsiness compared to drowsy antihistamines.

Acrivastine is a fast-acting antihistamine commonly used to treat symptoms of allergies, such as hay fever, sneezing, itchy or runny nose, and watery eyes. It’s also effective for treating itching and rashes caused by hives (urticaria). Available in tablet form, Acrivastine works by blocking histamine, a substance produced by the body during an allergic reaction, which helps relieve these symptoms.

How to Take Acrivastine Safely

Dosage

The typical dose for adults and children over the age of 12 is one tablet (8 mg) taken up to three times a day. The maximum recommended dose is 24 mg per day, which equals three tablets. For children under 12, it is important to consult a doctor for guidance, as Acrivastine is generally not recommended for younger children.

When to Take It

Acrivastine works quickly, often providing relief within an hour of ingestion. It’s best to take it just before or during an allergy flare-up. It can be taken with or without food, but be sure to take it at the same time each day to maintain consistency in treatment.

Taking the Tablets

Swallow the tablet whole with a glass of water. Do not crush or chew the tablet as this can affect how the medication is absorbed by your body.

Adjusting Your Dosage

If you find that Acrivastine isn't controlling your symptoms as effectively, or if you experience side effects, contact your doctor. They may adjust your dosage or suggest a different antihistamine that better suits your needs.

Additional Considerations

• Avoid alcohol - Drinking alcohol while taking Acrivastine may increase the likelihood of side effects, such as drowsiness or dizziness. It's best to avoid alcohol or limit your intake while on this medication.

• Driving and operating machinery - Acrivastine is less likely to cause drowsiness compared to older antihistamines, but it can still affect your ability to perform tasks requiring focus, like driving. If you feel drowsy after taking it, avoid activities that require full attention.

• Pregnancy and breastfeeding - If you are pregnant, planning to become pregnant, or breastfeeding, consult your doctor before taking Acrivastine. While it's generally considered safe for short-term use, your doctor will advise you based on your individual situation. We have a great article on antihistamines in pregnancy.

• Other medications - Always inform your doctor about any other medications you are taking, including over-the-counter drugs, supplements, and herbal remedies. Acrivastine is typically well-tolerated, but it’s essential to ensure there are no interactions with other medications. Acrivastine can be taken with or without food, but you should avoid drinking grapefruit juice whilst you are on the medication.

Acrivastine is not suitable for everyone. You should not take acrivastine if you have previously had an allergic reaction to it or another ingredient listed in the medication. Acrivastine should not be taken by anyone under 12 or over 65 years of age.

You should speak with your doctor or pharmacist before taking acrivastine if you are pregnant or breastfeeding, have kidney problems, are due to have an allergy skin test, have a rare condition called porphyria, are intolerant to certain sugars like lactose, or have had an allergic reaction to another antihistamine in the past, as it may not be suitable for you.

Acrivastine can interact with other medicines such as betahistine, certain antidepressants (called monoamine oxidase inhibitors), dalteparin, erythromycin, and ketoconazole. If you take any prescription, over-the-counter or herbal medicines, check with your doctor or pharmacist that they are safe to take alongside acrivastine.

While Acrivastine is generally well-tolerated, some people may experience side effects. The most common ones are mild, such as a dry mouth (xerostomia), headache, or drowsiness. If you experience severe side effects, like an allergic reaction (difficulty breathing, swelling of the face or throat), seek immediate medical attention.

In rare cases, some individuals may experience dizziness or confusion. If these symptoms persist or worsen, contact your doctor. As with any medication, if you feel that Acrivastine isn't providing the relief you need or is causing discomfort, your healthcare provider can help guide you to the most suitable alternative.

If you are unsure, you can book an appointment to speak to a doctor here. Or you can always use our chat to find out more information.