Top
10
Doctor insights on: Brand Name Antihistamines

Share
1

1
2 days of hive outbreak has gotten worse - unsure what caused it but this is not the 1st time. Been taking off-brand antihistamine to no effect. Help!

2 days of hive outbreak has gotten worse - unsure what caused it but this is not the 1st time. Been taking off-brand antihistamine to no effect. Help!

See a dermatologist: May be allergy. Maybe not. Zyrtec (cetirazine) OTC 10mg. May need 2 or 3. Larger dose can make you sleepy. If severe, add prescription hydroxyzine 25mg at bedtime. If present over 6 weeks it is chronic urticaria which is usually not allergy. Avoid aspirin, alcohol. Beware of any and all pills or meds of any kind. Need precise diagnosis for best result. ...Read more

Benadryl (Definition)

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


3

3
Raised lumps and extreme itching burning rash on limbs, antihistamine give some relief doc doc changed the brand of my meds. What to do now?

Raised lumps and extreme itching burning rash on limbs, antihistamine give some relief doc doc changed the brand of my meds. What to do now?

Sounds like...: Sounds like the assumption is that you're having an allergic reaction to your meds. If so, stopping it should be enough. Can take a while for your body to clear though. Continue anti-histamine. Avoid getting overheated (exertion or hot bath/shower). Can add topical steroid cream. See doctor if not better 7-10 days after change in meds. ...Read more

4

4
Can someone name prescribed antihistamines, not otc.

Can someone name prescribed antihistamines, not otc.

Antihistamines : They are almost all over the counter. The only one that is not yet is one used for deep sedation called hyroxyzine. ...Read more

5

5
My name's Julie. I'm not usually bothered by seasonal allergies I am this year. If you take enough antihistamines will it build up in the system?

My name's Julie. I'm not usually bothered by seasonal allergies I am this year. If you take enough antihistamines will it build up in the system?

Nasal allergies: antihistamines can offer relief for mild symptoms and may build up.Nasal steroids ( Namsacort and Flonase are nonprescription) are going to be more effective for most people. The nasal steroids usually take 2-3 days to start making a difference and reach full effect the in 2 weeks. They are best used regularly in the season. Prescription antihistamine nasal sprays that work in 30 minutes. ...Read more

6

6
What exactly the name, dose, regimen of topical corticosteroid and antihistamine that is used in lichen planus treatment? Patient aged 6 years

What exactly the name, dose, regimen of topical corticosteroid and antihistamine that is used in lichen planus treatment? Patient aged 6 years

See a doctor. : Most cases of lichen planus are relatively mild. Affected individuals who do not have symptoms do not need treatment. If the itch or appearance of the rash are unpleasant, topical corticosteroid creams may be applied. In some cases for localized, itchy, thick lesions, injections of corticosteroids may be given. You need to see a doctor for proper diagnosis and treatment. ...Read more

See 1 more doctor answer
7

7
I've had a cough for over two years. I have been treated with inhalers, steroid, anti drip medications, antihistamines, zpac you name it. It has ?

I've had a cough for over two years.  I have been treated with inhalers, steroid, anti drip medications, antihistamines,  zpac  you name it.  It has ?

GERD?: Have you been evaluated for gerd? This can also contribute to bronchospasm and result in cough. It is not likely to be due to infection if it has been present for 2 years. If you are smoking, you need to quit. You may need pulmonary function testing to rule out copd, especially if you have smoked. ...Read more

See 2 more doctor answers
9

9
Can i take one antihistaminic at moorning and another one at nigt? for alergic reactions.

Can i take one antihistaminic at moorning and another one at nigt? for alergic reactions.

Yes but...: Antihistamines can be taking twice a day safely if required but there are other treatments available. If by allergic reaction you are referring to seasonal allergies, the gold-standard therapy is daily nasal steroid sprays and/or antihistamine nasal sprays. Nasal saline rinses, avoidance measures, and if refractory to treatment, allergy shots can also be helpful. See an Allergist for more details. ...Read more

10

10
What is the highest dosage of antihistamine that one person can take at one time?

What is the highest dosage of antihistamine that one person can take at one time?

Antihistamines: Safety of high dose medications is often unknown. Our experience comes from case reports of persons who intentionally or accidentally consumed unusually excessive quantities. When Claritin was first investigated, safety studies were done at 40 mg (4 times the current recommended dose). We take 10 mg because effectiveness is not significantly different between 10 mg and 40mg. ...Read more

See 1 more doctor answer
Dr. Paul Carter
593 doctors shared insights

Antihistamine (Definition)

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