can i take allergy medicine before 24 hours?
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Martin says hay fever symptoms -- such as weepy eyes, runny nose, and sneezing -- peak in the morning hours. So taking your 24-hour allergy medications before going to bed means that you'll get the maximum effect when you need it the most.
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“Once-daily antihistamines reach their peak efficacy 8 to 12 hours after you take them, so using them at dinnertime or before bed means better control of your daytime symptoms,” says Yoon Mi Kim, DO, an allergy and immunology specialist for Geisinger.
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The effect will last for about 6 hours so if you are taking the tablets twice a day make sure you take the last dose in the afternoon at least 8 hours before going to bed.
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It is best to take this medicine on an empty stomach, 30 minutes before you eat or 2 hours after you eat. Do not take antacids, iron, or calcium supplements within 4 hours of taking this medicine. Do not miss a dose.
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Taking 1 or 2 extra tablets by accident is unlikely to be harmful, as long as you do not take more than 8 tablets in 24 hours. Wait at least 24 hours before taking any more paracetamol.
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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.
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antacids that contain aluminum hydroxide, calcium, and magnesium hydroxide (do not take these products for at least 6 hours before or for 2 hours after ciprofloxacin) antihistamines (e.g., cetirizine, doxylamine, diphenhydramine, hydroxyzine, loratadine)
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Take over-the-counter antihistamines: In the morning, take a non-sedating antihistamine such as loratadine, 10 mg daily. At night, take diphenhydramine (Benadryl), 25 mg, 1 or 2 every 6 hours for itching and swelling.
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It is best to avoid taking this medication within 4 hours of your bedtime to prevent having to get up to urinate. Dosage is based on your medical condition, age, and response to treatment.
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Make sure to give a dose only every four to six hours, and never more than six doses in 24 hours, unless otherwise directed by your child's doctor.
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This medication is best taken 30 to 45 minutes before a meal. However, if you have stomach upset, you may take this medication with or after a meal or snack. Taking this medication late in the day may cause trouble sleeping (insomnia).
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As well as taking a non-drowsy antihistamine during the day (such as fexofenadine, cetirizine or loratadine), your doctor may suggest that you take a sedating antihistamine at night time if the itch is making it difficult to sleep. Do not take 2 antihistamines together unless your doctor advises you to.
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The main side effect of this drug is drowsiness in some people. Other antihistamines (for example, store brands of any drug for hay fever) will also help. When you give Benadryl, give it 3 to 4 times a day until the hives are gone for 12 hours.
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Exceptions to the 7-day rule include hydroxyzine (“Atarax”), which should be stopped 10 days prior to allergy testing, and diphenhydramine (“Benadryl”), which can be taken until 48 hours prior to allergy testing.
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Some symptom relief may occur within 10-20 minutes of the first dose. Within an hour, all patients should notice a reduction in their allergy symptoms with peak effects seen by two to three hours. The effects of fexofenadine are still seen 12 hours after an oral dose.
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The usual dosage for adults younger than 65 years and children who are 6 years and older is one 10-milligram (mg) dose per day. You shouldn't take more than 10 mg in 24 hours. Your doctor may recommend a 5-mg dose once or twice per day if your allergies are mild.
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Must I stop allergy medications prior to allergy testing? Antihistamine medications must be stopped before skin prick testing and performing a food challenge. However antihistamines do not need to be stopped before blood testing.