how many antihistamines can i take in 24 hours?
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Adults—1 to 2 milligrams (mg) every eight to twelve hours as needed. Children 12 years of age and older—0.5 mg to 1 mg two times a day 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 .
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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. Use the dosage given on the product. Use the drug recommended by your child's healthcare provider.
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Oral Benadryl products shouldn't be taken more than 6 times each day. For adults and children over 12 years of age, the maximum is 300 mg each day. For children ages 6 to 12 years, the maximum is 150 mg each day.
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Hay fever and allergies - diphenhydramine comes as 25mg and 50mg tablets. The usual dose is 25mg or 50mg, taken 3 or 4 times a day. Try to space your doses evenly throughout the day. Insect bites, stings and eczema - diphenhydramine comes as a cream which you use once or twice a day.
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As well as taking a non-drowsy antihistamine during the day (such as fexofenadine, cetirizine or loratadine), your doctor may advise that you take a drowsy antihistamine at night if itching is making it difficult to sleep. Do not take another drowsy antihistamine together with diphenhydramine.
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The effects of diphenhydramine last from four to six hours. Benadryl in the injectable form has a rapid onset of action. When used as a night-time sleeping aid, the usual dosage of Benadryl is 50mg at bedtime. A lower dosage may be needed in the elderly.
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For adults and teens, the diphenhydramine dosage is 25 to 50 mg every 4 to 6 hours. The maximum amount you should take in one day is 300 mg. Keep in mind, taking higher doses can increase the risk of side effects, including drowsiness.
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Take 1 tablet every 4 to 6 hours or as directed by a doctor. Do not use. Do not take more than 6 doses in 24 hours.
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In most cases you may take Zanaflex up to 3 times in one day if needed. Allow 6 to 8 hours to pass between doses. You may take Zanaflex with or without food, but take it the same way each time.
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Take 1 to 2 tablets every 4 to 6 hours or as directed by a doctor. Take 1 tablet every 4 to 6 hours or as directed by a doctor. Do not use. Do not take more than 6 doses in 24 hours.
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A: I have reviewed your question regarding Zyrtec (cetirizine). The normal adult dose is 5mg to 10mg taken at the same time each day. I cannot recommend taking more than the recommended dosage. Studies show that the 1/2 life of Zyrtec (half of the medication still in the body and not eliminated) is around 8 hours.
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To best avoid additive side effects, Benadryl should ideally be taken 24 hours after Zyrtec.
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Hay fever and allergies - diphenhydramine comes as 25mg and 50mg tablets. The usual dose is 25mg or 50mg, taken 3 or 4 times a day. Try to space your doses evenly throughout the day.
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Typical doses for Benadryl are: For adults and children older than 12, take 1 to 2 tablets or capsules every 4 to 6 hours as needed. For children ages 6 to 11, take 1 tablet or capsule every 4 to 6 hours as needed, or 1 to 2 teaspoons of Benadryl liquid every 4 to 6 hours as needed.
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Maximum dosage Oral Benadryl products shouldn't be taken more than 6 times each day. For adults and children over 12 years of age, the maximum is 300 mg each day. For children ages 6 to 12 years, the maximum is 150 mg each day.
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An antihistamine tablet typically starts to work within 30 minutes after being taken. The peak of effectiveness is typically within 1-2 hours after being taken.
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When using this product: Do not take more than 15 tablets in 24 hours. If pregnant, do not take more than 10 tablets in 24 hours. Do not use the maximum dosage for more than 2 weeks except under the advice and supervision of a doctor.