Death can occur from the misuse of antihistamines in very young children. For motion sickness , take diphenhydramine 30 minutes before you will be in a situation that causes you motion sickness such as a long car ride, airplane or boat travel, amusement park rides, etc.
Continue taking diphenhydramine with meals and at bedtime for the rest of the time you will be in a motion-sickness situation. Measure liquid medicine carefully.
Use the dosing syringe provided, or use a medicine dose-measuring device not a kitchen spoon. Remove an orally disintegrating tablet from the package only when you are ready to take the medicine. Place the tablet in your mouth and allow it to dissolve, without chewing. Swallow several times as the tablet dissolves. Call your doctor if the condition you are treating with diphenhydramine does not improve, or if you have a fever with a headache, cough, or skin rash.
Do not use diphenhydramine for longer than 2 weeks to treat sleep problems, or longer than 7 days to treat cold or allergy symptoms. This medicine can affect the results of allergy skin tests. Tell any doctor who treats you that you are using diphenhydramine. Since diphenhydramine is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose.
Do not use two doses at one time. Overdose symptoms may include vomiting, confusion, severe drowsiness, ringing in your ears, no urination, very dry eyes and mouth, dilated pupils, fast heartbeats, tremor, agitation, hallucinations, or seizure.
Benadryl is absorbed quickly in the body. You should only take Benadryl for a short amount of time, unless your doctor tells you to take it for longer. If you use Benadryl for two weeks or longer, your body can start to become dependent on it.
A typical dosage for adults and children ages 12 and older is one to two tablets every four to six hours. For example, some research has shown the medicine may help obsessive compulsive disorder OCD and general anxiety. Health Topics. Health Tools. Benadryl Diphenhydramine. Generic Name: Diphenhydramine. Reviewed: November 17, It may help relieve: Watery, itchy, red, or irritated eyes Runny nose Sneezing Hives Itching The medicine is also taken to help treat or prevent insomnia or motion sickness.
You should not use diphenhydramine if you are allergic to it. Ask a doctor or pharmacist if this medicine is safe to use if you have ever had: an enlarged prostate or urination problems; asthma, chronic obstructive pulmonary disease COPD , or other breathing disorder; glaucoma; or a thyroid disorder.
Side Effects. Side Effects What are the side effects of Benadryl Diphenhydramine? Stop using diphenhydramine and call your doctor at once if you have: severe drowsiness; or painful or difficult urination.
Side effects such as dry mouth, constipation, and confusion may be more likely in older adults. Common side effects may include: drowsiness; dry eyes, blurred vision; dry mouth, nose, or throat; decreased urination; constipation; feeling restless or excited especially in children ; or day-time drowsiness or "hangover" feeling after night-time use. Based on FDA pregnancy categories. Diphenhydramine is also used to relieve cough caused by minor throat or airway irritation.
Diphenhydramine is also used to prevent and treat motion sickness, and to treat insomnia difficulty falling asleep or staying asleep. Diphenhydramine is also used to control abnormal movements in people who have early stage parkinsonian syndrome a disorder of the nervous system that causes difficulties with movement, muscle control, and balance or who are experiencing movement problems as a side effect of a medication.
Diphenhydramine will relieve the symptoms of these conditions but will not treat the cause of the symptoms or speed recovery. Diphenhydramine should not be used to cause sleepiness in children. Diphenhydramine is in a class of medications called antihistamines. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms. Diphenhydramine comes as a tablet, a rapidly disintegrating dissolving tablet, a capsule, a liquid-filled capsule, a dissolving strip, powder, and a liquid to take by mouth.
When diphenhydramine is used for the relief of allergies, cold, and cough symptoms, it is usually taken every 4 to 6 hours. When diphenhydramine is used to treat motion sickness, it is usually taken 30 minutes before departure and, if needed, before meals and at bedtime.
When diphenhydramine is used to treat insomnia it is taken at bedtime 30 minutes before planned sleep. When diphenhydramine is used to treat abnormal movements, it is usually taken three times a day at first and then taken 4 times a day. Follow the directions on the package or on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand.
Take diphenhydramine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor or directed on the label. Diphenhydramine comes alone and in combination with pain relievers, fever reducers, and decongestants. Ask your doctor or pharmacist for advice on which product is best for your symptoms. Check nonprescription cough and cold product labels carefully before using two or more products at the same time.
These products may contain the same active ingredient s and taking them together could cause you to receive an overdose. This is especially important if you will be giving cough and cold medications to a child. Nonprescription cough and cold combination products, including products that contain diphenhydramine, can cause serious side effects or death in young children. Do not give these products to children younger than 4 years of age.
If you give these products to children 4 to 11 years of age, use caution and follow the package directions carefully. If you are giving diphenhydramine or a combination product that contains diphenhydramine to a child, read the package label carefully to be sure that it is the right product for a child of that age.
Do not give diphenhydramine products that are made for adults to children. Before you give a diphenhydramine product to a child, check the package label to find out how much medication the child should receive. Give the dose that matches the child's age on the chart. Ask the child's doctor if you don't know how much medication to give the child. If you are taking the liquid, do not use a household spoon to measure your dose. Use the measuring spoon or cup that came with the medication or use a spoon made especially for measuring medication.
If you are taking the dissolving strips, place the strips on your tongue one at a time and swallow after they melt. If you are taking the rapidly dissolving tablets, place a tablet on your tongue and close your mouth. The tablet will quickly dissolve and can be swallowed with or without water. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Diphenhydramine is usually taken as needed. If your doctor has told you to take diphenhydramine regularly, take the missed dose as soon as you remember it.
However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. Diphenhydramine may cause other side effects.
Call your doctor if you experience any unusual problems while you are taking this medication. Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture not in the bathroom.
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