In treating allergies or a cold with antihistamines, you may experience drowsiness, a common side effect of the medication. How does this happen? Histamine is a chemical produced by the immune system to fight off allergens and germs.
What is the best non-drowsy allergy medicine?
These antihistamines are much less likely to cause drowsiness:
- Cetirizine (Zyrtec, Zyrtec Allergy)
- Desloratadine (Clarinex)
- Fexofenadine (Allegra, Allegra Allergy)
- Levocetirizine (Xyzal, Xyzal Allergy)
- Loratadine (Alavert, Claritin)
Which allergy medicine is drowsy?
Both Zyrtec and Claritin may make you drowsy or tired. For that reason, you shouldn’t take these medications if you also take muscle relaxers, sleeping pills, or other drugs that cause drowsiness. Taking them at the same time that you take sedating drugs can make you extremely sleepy.
Are non-drowsy antihistamines as effective?
Non-drowsy antihistamines are generally the best option, as they’re less likely to make you feel sleepy. But types that make you feel sleepy may be better if your symptoms stop you sleeping. Ask a pharmacist for advice if you’re unsure which medicine to try as not all antihistamines are suitable for everyone.
Does all day allergy make you drowsy?
Drowsiness, tiredness, and dry mouth may occur. Stomach pain may also occur, especially in children. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Do antihistamines weaken immune system?
Most anti-allergy medications do not affect immunity, but it does depend on the medication. Medication such as antihistamines and Montelukast are generally considered safe so you should continue to use these. To the best of our knowledge, there is no reason to think that antihistamines would lower the immune response.
Which is better Claritin or Zyrtec?
Zyrtec has a quicker onset of action compared to Claritin and may be more effective than Claritin in reducing allergy symptoms, according to one clinical trial. However, cetirizine, the active ingredient of Zyrtec, has been shown to produce more drowsiness than loratadine.
Why does allergy medicine make me feel weird?
Why do they all seem to have this side effect? Older antihistamines are sedating because the medication penetrates the blood-brain barrier, which means that the medication not only works in treating allergy but also affects the brain. The result is a feeling of lethargy.
Can I take Claritin in the morning and Benadryl at night?
It’s not recommended to take Claritin and Benadryl together. Because they have similar side effects, taking them together can increase the risk of adverse effects. Claritin has a relatively long half-life so it may not be safe to take Benadryl 12 hours after Claritin.
Is it better to take Zyrtec at night or in the morning?
Cetirizine can be taken at any time of the day. In most people it is non-sedating, so they take it in the morning. However, a percentage of people do find it to be sedating so if it does make you drowsy it is best to take it in the evening. Cetirizine can be taken with or without food.
Do antihistamines make you gain weight?
Antihistamines may also increase appetite, which can cause weight gain. Anecdotally, people using Xyzal (levocetirizine)—an antihistamine similar to Zyrtec (cetirizine)—they have noticed they have put on extra pounds, which is what a very small percentage of patients who used the drug during trials experienced.
How long does drowsiness from antihistamines last?
What to do about: feeling sleepy during the daytime – drowsiness usually wears off 4 to 6 hours after a dose.
What antihistamine does not make you drowsy?
Newer, second-generation antihistamines such as cetirizine (Zyrtec), fexofenadine (Allegra) and loratadine (Claritin) – marketed as “non-sedating” – usually cause less drowsiness than older, first-generation medicine such as chlorphenamine (Chlor-Trimeton) and diphenhydramine (Benadryl) because they are less likely to …
How do you fight Benadryl drowsiness?
To reduce daytime drowsiness, take an antihistamine in the evening rather than in the morning. It may help you sleep, with drowsy effects wearing off by the next day. Be aware, though, that drowsiness can last longer than you might expect – and that some antihistamines can cause vivid or disturbing dreams.
What is the difference between Zyrtec and Benadryl?
Benadryl is also used to treat insomnia, motion sickness, and mild cases of Parkinsonism. A main difference between Benadryl and Zyrtec is that Zyrtec tends to cause less drowsiness and sedation than Benadryl. Both Benadryl and Zyrtec are available in generic form and over-the-counter (OTC).
What is the best natural antihistamine?
The 4 Best Natural Antihistamines
- Stinging nettle.