If your baby is not feeding as well as usual, seems unusually sleepy, or if you have any other concerns about your baby, talk to your doctor, pharmacist, health visitor or midwife.
Some medicines can increase the chances of you having side effects with cetirizine. Check with your pharmacist or doctor if you're taking any medicine that makes you drowsy, gives you a dry mouth, or makes it difficult for you to pee. Taking cetirizine might make these side effects worse. There might be a problem taking some herbal remedies and supplements alongside cetirizine, especially ones that cause sleepiness, a dry mouth, or make it difficult to pee.
Tell your doctor or pharmacist if you're taking any other medicines, including herbal medicines, vitamins or supplements.
Cetirizine is a type of medicine called an antihistamine. When you come into contact with something you're allergic to, such as pollen, animal hair or fur, your body produces a chemical called histamine. Usually histamine is a useful substance, but in an allergic reaction it causes unpleasant symptoms including itchy, watery eyes, a running or blocked nose, sneezing and skin rashes.
For example, if you have a reaction to an insect bite, you may only need to take cetirizine for a day or two. You may need to take cetirizine for longer if you're taking it to prevent symptoms — for example, to stop hay fever when the pollen count is high. Talk to your doctor or pharmacist if you're unsure how long you need to take cetirizine for.
However it's best to take cetirizine only for as long as you need to. If you take it regularly over a long period there's a very small chance of severe itching if you stop treatment suddenly.
If you've been taking cetirizine every day for a long time, talk to your doctor before stopping it. It's best not to drink alcohol while you're taking cetirizine as it can make you feel sleepy. Cetirizine is classed as a non-drowsy antihistamine, but it's still possible to feel sleepy after taking it.
If this happens to you, do not drive a car, ride a bike, use tools or machinery until you do not feel tired anymore. It's an offence to drive a car if your ability to drive safely is affected. It's your responsibility to decide if it's safe to drive. If you're in any doubt, do not drive. Talk to your doctor or pharmacist if you're unsure whether it's safe for you to drive while taking cetirizine.
UK has more information on the law on drugs and driving. That's because it's less likely to make you feel sleepy than sedating antihistamines, such as Piriton chlorphenamine. Most people prefer to take a non-drowsy antihistamine instead of one that makes them drowsy. An exception is when you want the medicine to make you sleepy — for example, if you have itchy skin that's keeping you awake. Other non-drowsy antihistamines, such as loratadine , desloratadine, fexofenadine and levocetirizine, seem to work just as well as cetirizine.
But cetirizine seems to be more likely to make you feel sleepy than loratadine, desloratadine or fexofenadine. Yes, you can take cetirizine together with paracetamol or ibuprofen.
Sometimes doctors recommend that people with a severe, itchy skin rash take 2 different antihistamines together for a few days. As well as taking a non-drowsy antihistamine during the day such as cetirizine or loratadine , your doctor may advise that you take a drowsy antihistamine at night time if the itching is making it difficult to sleep. Yes, it's fine to take cetirizine together with some other hay fever treatments — for example, steroid nasal sprays such as beclometasone Beconase , Rhinocort Aqua and Flixonase Nasules or eye drops.
Your doctor may prescribe a higher dose of cetirizine up to 4 times the usual dose for you or your child, for a severe, itchy skin rash or swelling under the skin angioedema. Taking high doses of cetirizine is not suitable for everyone though.
Speak to your doctor if you think cetirizine is not working for you. There's no evidence to suggest that taking certirizine will reduce fertility in either men or women. Speak to a pharmacist or your doctor before taking it if you're trying to get pregnant. Cetirizine does not affect any type of contraception, including the combined pill and emergency contraception.
However, if cetirizine makes you vomit or have severe diarrhoea for more than 24 hours, your contraceptive pills may not protect you from pregnancy. Check the pill packet to find out what to do. Read more about what to do if you're on the pill and you're being sick or have diarrhoea. It'll help if you do not spend too much time outside if the pollen count is high. Page last reviewed: 15 October Next review due: 15 October Cetirizine - Brand names: Benadryl Allergy, Piriteze Allergy, Zirtek Allergy On this page About cetirizine Key facts Who can and cannot take cetirizine How and when to take cetirizine Side effects How to cope with side effects of cetirizine Pregnancy and breastfeeding Cautions with other medicines Common questions about cetirizine.
About cetirizine Cetirizine is an antihistamine medicine that helps the symptoms of allergies. It's used to treat: hay fever conjunctivitis red, itchy eye eczema hives urticaria reactions to insect bites and stings some food allergies Cetirizine is known as a non-drowsy antihistamine. It comes as tablets, capsules and as a liquid that you swallow.
Help us improve our website Can you answer a quick question about your visit today? It's usual to take cetirizine once a day. Children aged under 12 take it twice a day.
Cetirizine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy. Common side effects include headaches, dry mouth, feeling sick, dizziness and diarrhoea. Some brands of cetirizine come as capsules. These may contain soya oil. Do not take cetirizine capsules if you are allergic to peanuts or soya. Some Benadryl products do not contain cetirizine, but a different antihistamine such as acrivastine.
Most adults can take cetirizine. Children Children aged 1 and over can take cetirizine liquid if prescribed by their doctor. Studies on cetirizine have not been done to learn if there could be long-term effects from use in a pregnancy. There are no studies that look at cetirizine use during breastfeeding.
Although it has been suggested that antihistamines might reduce the amount of breast milk a woman makes, there have been no studies showing that this has actually happened. Compared to some other antihistamines, cetirizine has less chance of causing drowsiness for the mother or the baby. For this reason, cetirizine may be preferred for breastfeeding over antihistamines that do cause sleepiness. With repeated use, babies should be checked for signs that they are not overly drowsy.
Be sure to talk to your health care provider about all your breastfeeding questions. If a man takes cetirizine, could it affect his fertility ability to get partner pregnant or increase the chance of birth defects? There are no studies looking at possible problems with risks to a pregnancy when the father takes cetirizine. In general, exposures that fathers have are unlikely to increase risks to a pregnancy. Please click here for references. Media Inquiries Skip to primary navigation Skip to main content Skip to footer.
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