Can I take Allegra in the morning and Zyrtec in the evening? (2024)

FAQs

Can I take Allegra in the morning and Zyrtec in the evening? ›

If your allergy is particularly bad then yes you can take them on the same day, as there are no known interactions. This is a therapeutic duplication and it is usually recommended to take only one antihistamine at any time, however if you have been prescribed to take both together then it is appropriate.

If someone's healthcare professional prescribes taking Allegra in the morning and Zyrtec at night, that's fine. Otherwise, the answer is the same: Taking two antihistamines in one day isn't a great idea.

No interactions were found between Allegra and Zyrtec.

To sum it up, all first-generation H1 antihistamines should be taken close to bedtime or when you're able to sleep. Second-generation H1 antihistamines and H2 blockers can typically be taken at any time of the day. One exception to this is cetirizine, which can cause drowsiness for up to 14% of those who take it.

Some people may need to combine different allergy medications to treat their allergy symptoms. It's safe for most people to take allergy medications that are in different classes.

Allegra works within two hours and Zyrtec works within one hour. Several studies have found cetirizine (Zyrtec) to be more effective than fexofenadine (Allegra) at relieving symptoms of allergic rhinitis and urticaria, and it appears to have a longer duration of action.

ZYRTEC^® can be taken at any time of day. If your allergies are particularly bothersome at night, taking ZYRTEC^® at night or before bed can help you get a good night's sleep and wake up feeling refreshed.

If your allergy medication isn't working or you have new allergy symptoms, it may be time to visit your healthcare professional for an updated round of allergy tests. If you have new allergies, you may need to change your medications. You may also need a plan to avoid new triggers.

On its own, Allegra only seems to cause heart rhythm problems at extremely high doses. So taking an extra dose by accident is unlikely to harm most people. But if you've taken too much Allegra and are concerned, contact your healthcare provider or Poison Control at 1-800-222-1222.

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.

How many hours apart can you take allergy medicine? ›

Adults—8 or 12 milligrams (mg) every eight to twelve hours as needed. Children 12 years of age and older—8 mg every twelve hours as needed. Children 4 to 12 years of age—Use and dose must be determined by your doctor. Children and infants up to 4 years of age—Use is not recommended .

Take this medication by mouth on an empty stomach (at least 1 hour before or 2 hours after a meal). Take this medication with water. Do not take with fruit juices (such as apple, grapefruit, or orange) since they may decrease the absorption of this drug.

Allegra-D (fexofenadine / pseudoephedrine) is a combination medication containing fexofenadine and pseudoephedrine. The two medications work together to relieve allergies and congestion without causing daytime sleepiness, but can keep you up at night.

Interactions between your drugs

No interactions were found between Allegra and Xyzal. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Therefore, it is not recommended to take both Claritin and Zyrtec within the same 24-hour period. When switching from one allergy med to the other, wait at least 24 hours after taking Zyrtec, at least 12 hours when taking the 12-hour dosage form of Claritin, or 24 hours when taking the 24-hour dosage form of Claritin.

Yes. You can take Flonase and Zyrtec (cetirizine) together. But this doesn't always provide more allergy relief for everyone. Regular use of a steroid nasal spray (e.g., Flonase) is more effective than an oral antihistamine (e.g., Zyrtec).

Yes. You can take Flonase and Zyrtec (cetirizine) together. But this doesn't always provide more allergy relief for everyone. Regular use of a steroid nasal spray (e.g., Flonase) is more effective than an oral antihistamine (e.g., Zyrtec).

Interactions between your drugs

No interactions were found between Allegra and Xyzal. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Interactions between your drugs

No interactions were found between Singulair and Zyrtec.

Overdosing on antihistamines, the most common line of defense against seasonal allergies, can lead to increased drowsiness, nausea, vomiting and—in the case of first-generation sedating antihistamines—seizures and coma.