|(dye fen HYE dra
|AllerMax® Oral [OTC]; Banophen® Oral [OTC]; Benadryl® Injection; Benadryl® Oral [OTC]; Benadryl® Topical; Bydramine® Cough Syrup [OTC]; Compoz® Gel Caps [OTC]; Compoz® Nighttime Sleep Aid [OTC]; Dihydrex® Injection; Diphenacen-50® Injection; Diphen® Cough [OTC]; Diphenhist [OTC]; Dormin® Oral [OTC]; Genahist® Oral; Hyrexin-50® Injection; Maximum Strength Nytol®[OTC]; Miles Nervine® Caplets [OTC]; Nordryl® Injection; Nordryl® Oral; Nytol® Oral [OTC]; Siladryl® Oral [OTC]; Silphen® Cough [OTC]; Sleep-eze 3® Oral [OTC]; Sleepinal®[OTC]; Sleepwell 2-nite®[OTC]; Sominex® Oral [OTC]; Tusstat® Syrup; Twilite® Oral [OTC]; Uni-Bent® Cough Syrup; 40
|Foreign Brand Names|
|Allerdryl® (Canada); Allernix®
|Reasons not to take this medicine|
- If you have an allergy to diphenhydramine or any other part of the
- If you have an asthma attack.
- Do not give to newborns.
|What is this medicine used for?|
- This medicine relieves symptoms (runny nose; sneezing; throat
irritation and itching; watery, irritated, itchy, red eyes) from allergies.
- It is used for the treatment of hives and angioedema.
- It is also used for motion sickness, sleep disturbance, Parkinson's
disease, cough (colds/allergy), drug-induced extrapyramidal reactions, and skin
disorders causing itching.
|How does it work?|
- Diphenhydramine, if taken before coming in contact with the material
that causes the allergy, blocks the allergic reaction by minimizing/preventing
the body's reaction to the allergen.
- For motion sickness, it interferes with messages between the vomiting
center in the brain and other control centers.
- One of its side effects is drowsiness which aids in sleep.
- In Parkinson's disease, it helps balance a chemical
|How is it best taken?|
- Take with or without food. Take with food if this medicine causes an
- A liquid (elixir, syrup) is available if you cannot swallow pills.
Those who have feeding tubes can also use the liquid. Flush the feeding tube
before and after medicine is given.
- If you are taking this medicine for motion sickness, take 30 minutes
- If you are taking this medicine for an allergy, it is most effective
if started before contact with the allergen. Take at least 1-3 hours before.
- Diphenhydramine needs to be taken an hour before going to bed if you
are taking this medicine to help you sleep.
- Do not take by mouth. For skin only. Keep out of mouth, nose, and eyes
- Clean affected area before use.
- Use in a small amount over the area affected as a light film. Rub in
|What do I do if I miss a dose?|
- Take a missed dose as soon as possible.
- If it is almost time for the next dose, skip the missed one. Return to
your regular schedule.
- Do not take a double dose or extra
|What are the precautions when taking this
- Tell healthcare provider if you are allergic to any medicine. Make
sure to tell about the allergy and how it affected you. This includes telling
about rash; hives; itching; shortness of breath; wheezing; cough; swelling of
face, lips, tongue, throat; or any other symptoms involved. pregnant.
- Do not use if you are breast-feeding.
- Tell healthcare provider if you are pregnant or plan on getting
- If you are 65 or older, you may have more side effects. You could feel
sleepy, confused, constipated, or be unable to pass urine.
- Avoid alcohol (includes wine, beer, and liquor) and other medicines
and herbs that slow your actions and reactions. This includes sedatives,
tranquilizers, mood stabilizers, or pain medicine. Talk with healthcare
- Increased activity or inability to sleep may be seen in children.
- Use caution on skin where a large area is involved or where there are
open wounds. The medicine can get into your system and cause side
|What are the common side effects of this
- Feeling sleepy, tired, dizzy, or unable to think clearly. Avoid
driving, doing other tasks or activities that require you to be alert until you
see how this medicine affects you.
- Constipation. More liquid, regular exercise, or a fiber-containing
diet may help. Talk with healthcare provider about a stool softener or laxative.
- Dry mouth. Frequent mouth care, sucking hard candy, or chewing gum may
- Unable to pass urine. Go to the bathroom before taking medicine. Talk
with healthcare provider if it becomes a problem.
- Burning, itching,
|What should I monitor?|
- Watch for effectiveness of medicine in preventing and treating
|Reasons to call healthcare provider
- Signs of a life-threatening reaction. These include wheezing;
tightness in the chest; fever; itching; bad cough; blue skin color; fits;
swelling of face, lips, tongue, or throat.
- Too tired or sleepy.
- Any rash.
- No improvement in condition or feeling
|How should I store this medicine?|
- Store in a tight container at room
- Do not share your medicine with others and do not take anyone else's
- Keep all medicine out of the reach of children and pets.
- Keep a list of all your medicines (prescription, herbal/supplements,
vitamins, over-the-counter) with you. Give this list to healthcare provider
(doctor, nurse, pharmacist, physician assistant).
- Talk with healthcare provider before starting any new medicine,
including over-the-counter or natural products (herbs,
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