Doctor insights on:
Benefits And Side Effects Of Antihistamines
Mostly they cause tiredness but if you have a prostate problem, be careful
don't drink and take benedry and don't drive or operate heavy machinery! ...Read more
Try different brands:
The side effects of antihistamines (dry mouth, tiredness. Etc) vary from drug to drug. For example Benadryl (diphenhydramine) OTC is more likely to make you sleepy (in fact for some its a safe sleeping pill) whereas the more recent additions to the OTC antihistamine group (eg Claritin) have less sleepiness (but more dry mouth) Each Person reacts differently to these drugs Try some
Hope this helps
DR Z ...Read more
3rd generation AH:
Older antihistamines (AH) like Benadryl, (diphenhydramine) Atarax, Periactin caused drowsiness and dry mouth in at least 30% of the people. Weight gain in another potential side effect.
Newer antihistamines like Zyrtec, Xyzal causes drowsiness in about 10% of the people
3rd generation AH like Allegra and Claritin are not expected to cause drowsiness in 95% of the people. ...Read more
Is Modafil or something like this useful to treat the side effects of antihistamines? That could be really useful for me.
Few: There are no long term adverse effects from using antihistamines. Short term sides effects are typically from older antihistamines such as Benadryl (diphenhydramine) that can cause drowsiness and delayed reaction time. New generation antihistamines such as claritin, clarinex, zyrtec, xyzal and Allegra are generally very well tolerated. No dependence and few if any drug interactions. ...Read more
Is antihistamine bad for asthma. If not what is the safest antihistamine to take with minimum side effects?
No: Antihistamines are not bad to take if you have asthma, however if you're using them to treat asthma symptoms this is not appropriate. Antihistamines are for itchy, sneezy symptoms secondary to allergies. Asthma medications include albuterol and daily inhaled steroids. Non-sedating antihistamines like Claritn, Zyrtec, and Allegra (fexofenadine) have relatively equal efficacy and safety profiles ...Read more
What are long term side effects of diphenhydramine antihistamines and do they lose effectiveness over time? K
Minimal: Diphenhydramine is the active ingredient in Benadryl (diphenhydramine) and has been around for a very long time. Like most antihistamines, there is not believed to be long term side effects. Losing effectiveness is less well studied, but with ongoing use there could be some development of tolerance or it could be that you are still being exposed to an allergen and that is why symptoms are not controlled. ...Read more
Can a non drowsy antihistamine that had no side effects that I've noticed hurt you if u take 2 pills in 24hrs instead of 2?
No: Which antihistamine? Why using it? Sometimes, for chronic urticaria, cetirizine [Zyrtec] is dosed at 3 a day. The official dose of these is 1 a day. Allegra and claritin are also sometimes used at double or triple dose. It is best if you consult a Dr before you take doses higher than usual. ...Read more
Is it possible to get "rebound" side effects from stopping an antihistamine? I've been taking one for 5 months, and have sinus problems since stopping
You probably need it: Rebound to cessation of antihistamines would be unusual, . If you took a combination antihistamine/decongestant, it would be more common. However, you had been taking an antihistamine for 5 months. Had you taken it for a nasal problem? My hunch is that your nasal/sinus problem, for which you had taken the antihistamine in the first place, recurred the moment you stopped it. ...Read more
Is there any side effects when you take antihistamines like atarax (hydroxyzine) for a longer period?
Newer antihistamines are not anticholinergic. So why are side effects like constipation often reported for claritin (loratadine) for example?
Most common side: Effects of Diphenhydramine are drowsiness, dry mouth, constipation, blurry vision, thickenened secretions, impaired coordination. There is a big laundry list of the usual anti choline this side effects, but those are the most common. People use it to sleep or for itching most often. ...Read more
Less than 12 hrs: Likely from 6 to 12 hrs.Get a more detailed answer ›
Benadryl (diphenhydramine) can cause: Sedation the nxt day (due to its long1/2-life). Can cause decreased alertness, diminished cognitive function, delirium, dry mouth, blurred vision, urinary retention, constipation, increased intraocular pressure/glaucoma, & many other anticholinergic agent. Ill effects in disease specific states & drug-drug interaction are other concerns. Generally safe when used in moderation for the right purpose. ...Read more
Not usually: It should not cause any issues.Get a more detailed answer ›
I accidentally took expired Benadryl (diphenhydramine) (6 years old). Should I be looking out for any bad side effects?
No: Just be careful, side effects depend on many factors, hope you didn't exceed the recommended dosage ...Read more
Will taking a Benadryl (diphenhydramine) every so often creat any sexual side effects that last months?
I took two Benadryl (diphenhydramine) tablets and after I swallowed them I realized they were expired by almost 5yrs. Will this have bad side effects.
No worries!: This should not cause any problem. Most medicines loose effectiveness after the expiration date. It is advisable not to take again. ...Read more
Yes if prescribed: Tramadol is a strong pain relieving medication and Benadryl (diphenhydramine) is an antihistimine (usually available over the counter). Both can cause drowsiness, even more so if taken in combination. Should be relatively safe for a healthy 40 year old male- provided that the tramadol was prescribed by your health care professional. ...Read more
Is it ok th take Benadryl (diphenhydramine) and 1mg of melatonin before bed without side effects?
Side effect possible: Benadryl (diphenhydramine) and melatonin could make a purpose MORE tired and sleepy which could translate into being groggy in the morning thought for all practical purposes, 1 mg. Of melatonin is an extremely small amount. Then, again, I don't know anything about your build, your weight, other medications you are taking, etc. Etc. So perhaps FOR YOU....1 mg. Of melatonin is more than what it may sound. ...Read more
What do I do? I've taken benadryl, (diphenhydramine) unisom, & pamprin? Is there serious side effects?
How much???: How much of these did you take? Were you trying to overdose? Since you've given no information about amounts, you need to go to the emergency room now. Call 911 if you need to -- do not drive yourself. All 3 could be sedating, but the pamprin contains acetominophen which can be toxic to your liver if enough if consumed. Please get help now. ...Read more
Is it safe to take Benadryl (diphenhydramine) and penicillin together or will this cause bad side effects?
Can Benadryl (diphenhydramine) usage over a long term produce cause similar sexual side effects that ssris produce?
Unlikely: Ssri side effects are very well established where as antihistamine use and sexual side effects are not that well established. I would be more concerned about long term use of antihistamine and the reasons for it. Are you using it for sleep, allergy? Consult a psychiatrist as theses may be residual sx of depression and treatment may need to be optimized. ...Read more