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Doctor insights on: Older Antihistamines

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Now knowing that older antihistamines like hydroxyzine make you gain weight, how soon after I stop taking it will I start to lose the weight?

Now knowing that older antihistamines like hydroxyzine make you gain weight, how soon after I stop taking it will I start to lose the weight?

Depends: Once your appetite returns to normal, you will have to eat less (particularly carbs) and exercise more to lose the weight which was gained. The speed of loss depends on how much less you eat and how much more you exercise. ...Read more

Benadryl (Definition)

Diphenhydramine is a sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


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Can I give my 5 yr old an antihistamine before eating out for fear that might eat foods not allowed for him because he has allergies

Can I give my 5 yr old an antihistamine before eating out for fear that might eat foods not allowed for him because he has allergies

Benadryl (diphenhydramine) or Epipen: Which antihistamine are you planning to give? And do you know what they're allergic too? Most times you only give antihistamines if you know your going to be exposed to an allergen. If you feel you must give one, do not give Benadryl (diphenhydramine) until age 6. The other problem with medicating children is that adults tend to give to much. My advice is to get a prescription for Epipen to use for emergencies... ...Read more

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I'm a 23 year old male and antihistamines completely knock me out to the point where its hard to wakeup. I'm on the smaller side so could that effect it?

I'm a 23 year old male and antihistamines completely knock me out to the point where its hard to wakeup. I'm on the smaller side so could that effect it?

Different med: Most antihistamines are based on age rather than weight. Also, first generation (old) antihistamines commonly cause drowsiness. Most people do not have drowsiness with the new generation antihistamines such as claritin, (loratadine) zyrtec, allegra. However, for whatever reason, some people are sensitive to usual doses. A lower dose could be tried, or an allergist can assist with other therapies. ...Read more

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Can a 6week old baby take antihistamines for a facial rash that appeared after putting some cream on?

Can a 6week old baby take antihistamines for a facial rash that appeared after putting some cream on?

No: Antihistamines are generally not recommended for infants. Please see your GP for an examination and treatment. In the meantime please keep moisturising the skin with simple fatty cream ...Read more

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I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous? What s the side effect on him?

I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous? What s the side effect on him?

Expired drugs: There should be no side effects as expiration is usually based on loss of drug effectiveness. Drug companies err on the side of shortening times to expiration. Actually many drugs are effective long after expiration dates. Expired drugs are commonly used effectively by volunteer organizations when no other drugs are available. Relax! ...Read more

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How old does a kid have to be to start using antihistamines?

How old does a kid have to be to start using antihistamines?

Antihistamine & baby: Some babies receive antihistamines in utero. Benadryl (diphenhydramine) was shown to be safe in pregnancy by a class action suit being brought against it failing to show any deformities that were unexpected compared to the rest of the population. But before using any antihistamine in a tiny baby, check with your doctor. Don't use antihistamines for colds. They make secretions thick and increase sinus infection. ...Read more

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What damage can antihistamines cause to 12 year old if giving without proper cause?

What damage can antihistamines cause to 12 year old if giving without proper cause?

Fatigue: Benadryl (diphenhydramine) can cause fatigue from overuse in most people. Claritin does not usually have this issue. Antihistamines also can cause urinary retention due to their anticholinergic effects. As with any medication, they should only be taken if their benefits outweigh their risk for the problem being treated. If someone has significant allergy symptoms, taking a non-sedating antihistamine is helpful. ...Read more

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Which antihistamine is safe for a 2 week old infant for Allergy?

Which antihistamine is safe for a 2 week old infant for Allergy?

None: None that I am aware of. I am not sure he has an allergy either at 2 weeks of age. He may instead just have a cold. I would just use a gentle nasal saline spray and use a suction device like Nosefrida. My wife uses it on our 3 year-old. Use a cool mist humidifier too. And, have him see his pediatrician if no improvement. Most drugs used in infants starts at 2 years of age. ...Read more

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Is there an antihistamine I can safely give to my 11 month old to stop the sneezing?

Is there an antihistamine I can safely give to my 11 month old to stop the sneezing?

Other options: At this age you are often better off washing out their nasal passages with saline and removing irritating odors from their environment. ...Read more

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I have aquagenic urticaria is there anything else I can do other then just antihistamine everyday? I have had it for 12 years now. 20yr old female

I have aquagenic urticaria is there anything else I can do other then just antihistamine everyday? I have had it for 12 years now. 20yr old female

No: There is no cure for this condition which may subside by itself with time You are taking benadryl (diphenhydramine) which often makes people drowsy and tired. Consider trying Zyrtec or Allegra instead and you will likely have a better quality of life. ...Read more

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I gave my 7 year old 5mL of Bromfed and 7.5mL of Benadryl not realizing Bromfed has an antihistamine in it. Is there anything I should watch for?

I gave my 7 year old 5mL of Bromfed and 7.5mL of Benadryl not realizing Bromfed has an antihistamine in it. Is there anything I should watch for?

Call poison control: Anytime there is a concern about potential medication issues--always call the regional Poison Control. These consultants are available 24 hours a day and have vast resources when attempting to deal with medication problems--in this case, a concern about possible overdose. Every child is different, and because there are so many possibilities of adverse effects when mixing meds, call Poison Control. ...Read more

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Past 3 weeks my 3 year old has been complaining of itching inside her nose! Any ideas? I gave her antihistamine and I'm unsure if it worked.

Past 3 weeks my 3 year old has been complaining of itching inside her nose! Any ideas? I gave her antihistamine and I'm unsure if it worked.

Get it checked: An ENT can evaluate your daughter's itchy nose. The most common cause of itching anywhere on the body is the presence of C. Trachomats., a very common bacterium. The remedy I use for this bacterium is the Chinese herb, Bitter Melon. But get the itchy nose checked before doing any further treatment. ...Read more

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If my 9 month old infant has broken out in hives possibly from a food allergy, is there an antihistamine?

If my 9 month old infant has broken out in hives possibly from a food allergy, is there an antihistamine?

Call pediatrician: There are antihistamines that can be used for infants. The dose should be adjusted for your infant's weight. Non-sedating antihistamines are preferred as drowsiness after hives may be a symptom of a more serious allergic reaction called anaphylaxis. Benadryl (diphenhydramine) can also sometimes cause unexpected irritability. You will want to discuss these issues with your pediatrician. ...Read more

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My 7 year old suffers from severe seasonal allergies and has been prescribed daily doses of antihistamine, can you suggest any natural remedies?

My 7 year old suffers from severe seasonal allergies and has been prescribed daily doses of antihistamine, can you suggest any natural remedies?

Honey: Some natural therapists might recommend regular use of honey made from local bees to gently expose intestinal immune system to these antigens as a type of immunotherapy. Omega oils in fish, flax, & other foods can counteract inflammatory effects potentiated by saturated fats in our foods. Avoid damaged (fried and cooked) fats, which enhance inflammatory processes in the body. No sodas! ...Read more

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Non itchy rash flare up 3 times in 24 hours despite antihistamines. Is there a chance that I m allergic to my cat? (9 months old). No prior symptoms.

Rash not cat allergy: If it doesn't itch it's not an allergic rash. The other possibility is that the antihistamines are strong enough to suppress itching but not the rash. Try stopping the antihistamine. If the rash continues to appear and becomes itchy, then yes, it could be the cat. You will want to see a health care professional at that point. ...Read more

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35 year old female (history of Crohn's disease) with new facial flushing. Never happened before. No new meds, foods or skin products. Antihistamines and cold compresses not helping.

35 year old female (history of Crohn's disease) with new facial flushing. Never happened before. No new meds, foods or skin products. Antihistamines and cold compresses not helping.

Unusual: Based on the info you provided, it's hard to say exactly what it is. If you are having any belly pain, I would be concerned that your flushing could be related to an evolving crohn's infection or fistula. Other ideas include an allergy, or even more rarely would be a type of a tumor called a neuroendocrine cancer. Make an appointment to discuss with your doctor. ...Read more

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Allergies? What to do about hives on my 4 year old my four year old has just developed 3 hives on his face. He is not complaining. Should I give him an antihistamine? He hasn't eaten anything unusual today and is having no other swelling or reactions. Th

Allergies? What to do about hives on my 4 year old my four year old has just developed 3 hives on his face. He is not complaining. Should I give him an antihistamine? He hasn't eaten anything unusual today and is having no other swelling or reactions. Th

If: If the hives receeded on own not needed. Would speak to your pediatician about the possible causes. If he is not helpful consider seeing an allergist. It is most likely related to an exposure that occurred within 4- 8 hrs of the appearence. ...Read more

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What is the best antihistamine to give a 4 year old with a runny nose?

Variable: Kids are variable in their response to a particular med and no one product is the "gold" standard of efficiency. The speed of action, duration of effect and frequency of side effects also varies from one product to another. I like the non--sedating products like fexofenadine and loratadine, but for some benedryl is quicker and well tolerated. Trial and error helps decide for the individual kid. ...Read more

Dr. Paul Carter
630 Doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more