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what is the best time to take an antihistamine

A 42-year-old member asked:
Dr. ISRAEL GRINBERG
41 years experience Physical Medicine and Rehabilitation
22: At bedtime.
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A 47-year-old member asked:
Dr. Neal Jain
Dr. Neal Jain answered
21 years experience Pediatric Allergy
It depends: It depends on the antihistamine and when you are exposed to the cause for your allergies. Antihistamine pills generally take at least 30 minutes to t ... Read More
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2 thanks
A 48-year-old member asked:
Dr. Gary Steven
29 years experience Pediatric Allergy and Asthma
Depends: Most people respond best to zyrtec or xyzal, (levocetirizine) as long as they don't get drowsy with them. Everybody reacts differently to different an ... Read More
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1 thank
A 41-year-old male asked:
Dr. Michael Sokol
Specializes in Internal Medicine
NONE : Antihistamines will increase mucous viscosity. Increasing fluid intake and use of guafenisen will decrease mucous viscosity.
A 43-year-old member asked:
Dr. Alan Goldsobel
43 years experience Allergy and Immunology
Poorly studied: There are very few unbiased studies looking at herbal therapies for allergies. A review article on this subject felt that the use of butterbur may be ... Read More
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6 thanks
A 57-year-old female asked:
Dr. Corey Clay
9 years experience Allergy and Immunology
Have you been seen?: This is an urgent situation. Hopefully, you have been seen by a physician. If not, proceed to the ER if the swelling involves the mouth (potential f ... Read More
A 29-year-old male asked:
Dr. Sudeshan Govender
Specializes in Family Medicine
Take oral meds: Topical antihistamine will not work . Suggest oral daily non sedating antihistamines and avoidance. Will need to speak to your housemate .
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1 thank
A 52-year-old member asked:
Dr. Stevan Cordas
56 years experience Internal Medicine
OTC antihistamines: The second generation zyrtec, allergra or Claritin (loratadine) are comparative. None are perfect. Zyrtec is slightly more likely to make you tired ot ... Read More
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A 44-year-old member asked:
Dr. Michael Zacharisen
32 years experience Allergy and Immunology
New generation ones: The new generation antihistamines include Claritin, Zyrtec, Allegra and Xyzal (levocetirizine). These are as effective as older antihistamines (Benad ... Read More
A 37-year-old member asked:
Dr. Thomas Shen
28 years experience Internal Medicine
Unclear: Different antihistamines have different potencies. 10 mg of Zyrtec is equivalent to 180mg of Allegra (fexofenadine). Mg doseage as in all medicines ... Read More

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