Doctor insights on:
Benadryl Maximum Strength Medication
50 mg total: You can take a total of 50 mg up to every 4 hours. I've never heard of extra strength Benadryl (diphenhydramine) (they do make a 50 mg tablet, but i've always seen it behind the counter at a pharmacy). All the over-the-counter strengths i've ever seen are 25 mg, so you can take 2 of those. ...Read more
I ate a grapefruit without thinking about an hour after taking a Benadryl pill. I know grapefruit can affect some medications will this be okay?
Avoid these: Older antihistamines like Benadryl (diphenhydramine) interact with many drugs. Don't mix it with alcohol, sleeping pills, sedatives, antidepressants, potassium supplements, sodium or potassium phosphate, antipsychotics, MAO inhibitors, symlin (pramlintide), sodium oxybate, Precedex (dexmedetomidine) & abilify (aripiprazole). Loratidine and fexofenadine are as effective & much safer. Discuss this with your doctor. ...Read moreSee 1 more doctor answer
I am having a reaction to insect bites. I have Extra Strength Benadryl (diphenhydramine) Nighttime, 1 50mg pill isn't working can I take 2?
Benadryl (diphenhydramine): 50mg is the recommended dose but adults can take 400mg in 24 hours. Take 50mg 30 minutes before bedtime and if not effective by 30 minutes repeat the dose. If this is making you drowsy the following day you know it is too much. Your size and weight may have a lot to do with your dose. All the best. ...Read more
Use with caution: The antihistamine products like benedryl will thicken your mucous secretions which can be a problem for those on the margins with asthma. Asthma patients tend to have problems with excess secretions already & thickening them lakes it harder for them to be cleared from the airways. Benedryl can often be used during periods of good control, but i avoid it during flares. ...Read moreSee 1 more doctor answer
Can you take Benadryl (diphenhydramine) if you are taking other types of medication for allergies?
NO: Using chlorpheniramine (the antihistamine in corricidin) together with Diphenhydramine (benadryl( may increase side effects such as drowsiness, blurred vision, dry mouth, heat intolerance, flushing, decreased sweating, difficulty urinating, abdominal cramping, constipation, rapid heart beats, confusion, and memory problems. They are both similar acting drugs. Do not take together. ...Read more
Are there any immediate acting allergy medications I can take other than Benadryl (diphenhydramine)?
Might I use Benadryl (diphenhydramine) itch cream(extra strength) with Benadryl (diphenhydramine) allergy pills?
If Benadryl's plasma clearance is about 9 hours x 5, how long would it remain active to affect the brain and interact with other medications?
I am on Eliquis. This morning (17 hours ago), I took Lexapro 10 mg. Tonight, I took 2 extra strength Tylenol and 2 Benadryl. Can I take an Ativan too?
Yes: Ativan does not interfere with the medications you took. But the combination of Benadryl and Ativan may make you feel extra drowsy and dizzy. It’s a good idea to make sure you take these before bed (as opposed to before any activity that requires coordination, like driving / operating heavy machinery, which could pose a danger to others) the first time so that you get a sense of how you react. ...Read moreSee 1 more doctor answer
I have RLS and have tried all the medications on the market nothing works. Any suggestions. Also if I take phenergan (promethazine) r Benadryl it makes it a lot wors?
I have asthma, allergies and pnd. I believe Benadryl (diphenhydramine) will curb my pnd, yet may harm asthma. Should I use it here and there at regular strength? Thank
Maybe maybe not: Often asthmatics do use antihistamines in cinjunctinwith their routine asthma meds. Discuss using a non-sedating antihistamine like Claritin with your phsyician. Have you tried nasal saline which does not affect your asthma and may reduce your pnd. ...Read moreSee 1 more doctor answer
Do anticholinergic medications like Benadryl (diphenhydramine) have a link with mild cognitive impairment?
Can i take Benadryl (diphenhydramine) with prescription strength tagament - I have taken 800mg total since 12pm today it is now 1am I have a horrible case of hives?
Can the any of these medications be causing high blood pressure? Benadryl? Phenagran? And or reglan (metoclopramide)?
All could be: If you look at the possible side effect profile for each of the drugs you mentioned, high blood pressure is listed as a possible side effect for each one. Side effect profiles for drugs are very patient dependent and very hard to predict. Sometimes starting and stopping medications in an orderly fashion can determine if one is causing the undesired side effect. Talk with your doc. ...Read more
I've been trying to get pregnant and I am currently taking Zantac(acid reflux) and Benadryl. Could these medications keep me from conceiving? Thanks!
Possibly: Ranitidine has not been known to cause any problems with fertility or pregnancy, however diphenhydramine/Benadryl and other antihistamines theoretically can affect the implantation of the egg in the womb by decreasing bloodflow to the uterus. It is still debatable, (and there aren't any good studies on the subject), but it might be good to stop taking benadryl unless you REALLY need it. ...Read more
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