Top
30
Doctor insights on: Dangers Of Diphenhydramine

Share
Dr. John Chiu
1,047 doctors shared insights

Diphenhydramine (Definition)

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


3

3
Is frequent Benadryl (diphenhydramine) usage dangerous?

No: There is a common misconception that frequent use of antihistamines leads to tolerance and eventual lack of effectiveness. This is untrue. Frequent use of decongestants that can lead to tachyphylaxis (lack of effect after several consecututive days of use) but there is no real justification for changing back and forth from Allegra to Claritin (loratadine) or to zyrtec. Typically if one works poorly, all will. ...Read more

4

4
Is 200 mg of Benadryl (diphenhydramine) taken all at once dangerous?

Is 200 mg of Benadryl (diphenhydramine) taken all at once dangerous?

Benadryl (diphenhydramine): I would not advise dose higher than 100mg. Please consult your doctor. ...Read more

5

5
My son has been taking excessive amounts of benadryl, (diphenhydramine) 12-20 pills at a time, to get high. What are the dangers, & long term health effects?

My son has been taking excessive amounts of benadryl, (diphenhydramine) 12-20 pills at a time, to get high. What are the dangers, & long term health effects?

Not good: Generally a safe drug from allergies, and toxicity in usual dosages.
Usually makes people sleep before "high",
but. A bad idea to overdose with anything!, . ...Read more

6

6
Danger of infant taking 25mg of benadryl (diphenhydramine)?

Danger of infant taking 25mg of benadryl (diphenhydramine)?

Depends on variables: This would be a proper dose for a 40 lb kid & a double dose at 20lb. Overdose tends to cause nervous system symptoms. Sedation, nausea & vomiting are common. Some infants may have the opposite effect & this provides over-stimulation & excitation in some. ...Read more

7

7
What potential dangers are there from taking Benadryl (diphenhydramine) on a regular/nightly basis for increased nighttime histamine release?

What potential dangers are there from taking Benadryl (diphenhydramine) on a regular/nightly basis for increased nighttime histamine release?

Various: Due to its different properties, side effects from nightly use of Diphenhydramine ( benadryl) may include central nervous system depression, tremor, restlessness, impaired memory, hallucinations, cardiac issues( increase heart rate, hypotension) , urinary retention, blurred vision. If you require this for continuous use, see your physician for proper evaluation of sleep problems.
Take care. ...Read more

9

9
Is it dangerous to take valuim 20mg and Benadryl (diphenhydramine) 50mg together? I have high tolerence

I'd avoid it: Dangerous is different to different folk. I'd certainly hope you'd not drive or do anything requiring alertness, judgement, steadiness, etc. I would avoid it. But the medications you already list are already risky for those reasons in combination. Talk w/ your provider. Don't drive unless ABSOLUTELY unavoidable. Be careful. ...Read more

10

10
I take at least 200-400mg of Benadryl (diphenhydramine) every day. I can't seem to not take it. Is it addictive?Is it dangerous?

Benadryl (diphenhydramine) Addiction: Yes, unfortunately. This is a very common addiction. With time and other substances it can lead to the disease of addiction that leads to isolation, despair and death. Benadryl (diphenhydramine) is a sedative and it can make our day time activities sluggish and non-productive. Many people get in car wrecks the morning after taking Benadryl (diphenhydramine) for sleep or other reasons. I would very interested to know what else. ...Read more

11

11
I take a mix of 200 mg of Diphenhydramine and 2 mg of Xanax (alprazolam) for sleep have been for 5 years. Dangers? How do I quit?

I take a mix of 200 mg of Diphenhydramine and 2 mg of Xanax (alprazolam) for sleep have been for 5 years. Dangers? How do I quit?

Addiction: Addiction is the primary danger, and inefficacy (sleeping drugs don't fundamentally work very we'll after so long). To get off these drugs you will need the help of a good sleep specialist or psychiatrist or addictionologist. ...Read more

13

13
What will happen if I take 3 Benadryl (diphenhydramine) and a 10mg muscle relaxer ? Will I be in danger ?

What will happen if I take 3 Benadryl (diphenhydramine) and a 10mg muscle relaxer ? Will I be in danger ?

Benadryl (diphenhydramine) and Skelaxin: Benadryl (diphenhydramine) and Skelaxin muscle relaxer both increase sedation and drowsiness. Benadryl (diphenhydramine) and Flexeril both increase sedation and drowsiness. Any muscle relaxer and Benadryl (diphenhydramine) will increase sedation and drowsiness and needs to be closely monitored by your treating physician. Hope it helps. ...Read more

14

14
I was wondering: if Benadryl (diphenhydramine) only works for 4 hours and it also causes drowsiness, why people use it during the day? That seems dangerous...

I was wondering: if Benadryl (diphenhydramine) only works for 4 hours and it also causes drowsiness, why people use it during the day? That seems dangerous...

Yes, it is: The trouble is that almost any drug has a variable effects from person to person. Some people can get away with using it for their symptoms without becoming drowsy. If you experience drowsiness from the use of this drug, it should not be taken in daytime ...Read more

16

16
What happens to the human body after taking 3 50mg soft gels of diphenhydramine hci? Will i sleep better or will it be dangerous? I want to do no harm.

Diphenhydramine: The usual dose is 25-50 mg upto 4 times a day , and not toexceed 300mg per day from all sources, as many cold meds contain diphenhydramine as an ingredient ...Read more

19

19
Is it dangerous to mix Benadryl (diphenhydramine) allergy with claritin-d 12 hour?

Is it dangerous to mix Benadryl (diphenhydramine) allergy with claritin-d 12 hour?

No: You can take these together but i would not exceed more than 1 or 2 a day of benadryl (diphenhydramine). Benadry is ver sedating. ...Read more

20

20
I take at least 200mg of the active ingredient in Benadryl (diphenhydramine) and or sleep aids every day. At the same time.To make me sleep.Is it dangerous?

Yes!: Not being able to sleep may indicated sleep problems that can be life shortening or life threatening. The only way to know if there are serious problems is with an overnight sleep test. I encourage you to seek help. ...Read more

21

21
Took a Claritin (loratadine) D 24 hrs 10 hours ago, forgot and took a allergy sinus med with acetaminophen, phenylephrine and diphenhydramine. Am I in danger?

Took a Claritin (loratadine) D 24 hrs  10 hours ago, forgot and took a allergy sinus med with acetaminophen, phenylephrine and diphenhydramine. Am I in danger?

Unlikely : But if you feel your heart racing, or otherwise that something is not right, call your primary care or go to the ER. It is very unlikely however that you will need medical attention for this. Hope this helps, and that you feel better soon! ...Read more

22

22
Is diphenhydramine adictave?

No: The antihistamine is does not have addictive qualities. Yet a person can become habit driven to continue any product/medication/coffee/food etc.Habituation is a strong force in ones life to continue past patterns. If stopped, a longing for that product can be quite strong, but it does not produce the physical addiction entails. ...Read more

23

23
Can i cut diphenhydramine in half?

Can i cut diphenhydramine in half?

Depends: Some Diphenhydramine comes in capsules and some in solid pills. You can cut the pills but the capsules will just squish, break open and spill the contents. If capsules are all you have, you can dissolve the contents in water and drink half or something we do with patients at times is to mix it with jello and have them eat the proper amount. ...Read more

24

24
Is 150 mg of diphenhydramine okay?

too much: This is too much diphenhydramine, you should not take such high doses before checking with a doctor or guided by a doctor. ...Read more

25

25
Can i cut a diphenhydramine in half?

Tabs, yes: It is not practical to cut a capsule, but a scored tablet can be easily cut with a pill cutter. There are many formulations of Diphenhydramine in case a lower than usual dose is required. ...Read more

26

26
What color are diphenhydramine pills?

DiphenhydramineColor: Usually they are pink or pink and white if capsules; but I do not know if soem generic version scould be white. ...Read more

27

27
Can I take 75mg of Diphenhydramine HCI?

Can I take 75mg of Diphenhydramine HCI?

Probably but why?: Adult dosing is 25-50 mg every 4-6 hours as needed. Maximum dosing is listed as 100mg per dose up to a total of 300 to 400mg per day. I'm just wondering your reason for taking 75mg, as this medicine is sedating, and can make you sleepy. If the 25-50 mg isn't strong enough, maybe there's something else better for you to try. Discuss this with your doctor, who might have a better suggestion for you. ...Read more

28

28
Is 75mg of diphenhydramine an overdose?

75mg diphenhydramine: Is larger than a single dose should be for an adult or child. So it is technically an overdose. Normal doses for a child may be 75 to 150mg per day in divided dose or 150 to 300 mg per day in a divided dose for an adult. Are you considering taking an overdose? If you are -please have a friend or relative take you to the nearest er or call 911. With help your life and problems can improve. ...Read more

29

29
What amount diphenhydramine is an overdose?

It depends: Diphenhydramine was a major cause of seizures reported to a poison center. At a dose of 7.5mg/Kg (a total dose of 500 mg [20 OTC tablets] for a 150 pound person) many p0eople will develop severe reactions. In doses over 1g (40 tablets) the drug may be lethal. ...Read more

Benadryl (Definition)

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