Diphenhydramine (Systemic)

(dye fen HYE dra meen)

What key warnings do I need to know about before giving this drug to my child?

• Talk with the doctor before giving this drug to a child. Check all of your child's drugs, including OTC, with doctor.

Is it safe for my child to take this drug?

• Do not use Benadryl® Children's Allergy Fastmelt® if your child is allergic to peanuts or soy beans.
• Not if your child has an allergy to diphenhydramine or any other part of this drug.
• Be sure to let the doctor know if your child has any allergies or side effects to drugs, foods, or dyes. Make sure to tell about the allergy and what signs your child had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
• Not if your child has asthma.

Why does my child need this drug?

• It is used to ease allergy signs.
• It is used to help motion sickness.
• It is used to treat hives.
• It is used to treat itching.
• It is used to treat sleep problems.
• It is used to treat swelling of the face, lips, tongue, or throat.
• It is used to stop coughing.

How is this drug given?

• Oral:
• This drug is most useful if started at least 1 to 3 hours before your child comes in contact with the allergen.
• If this drug is to stop motion sickness, give 30 minutes before travel.
• Give this drug with or without food. Give with food if it causes an upset stomach.
• Place on your child's tongue and let it melt. Water is not needed. Do not let your child swallow it whole. Do not let your child chew, break, or crush it.Oral-disintegrating tablet:
• There is a liquid (elixir, syrup) if your child cannot swallow pills.
• Children who have feeding tubes may also use the liquid. Flush the feeding tube before and after this drug is given.
• Measure liquid doses carefully. Use the measuring device that comes with this drug. If there is none, get an oral syringe, a dropper, a spoon, or a cup (only for older children) from your pharmacist.
• Chewable tablet may be crushed and mixed with food or chewed. Do not let your child swallow it whole.
• Shot:
• It is given as a shot into a muscle or vein.

How long does this drug take to work?

• Your child may start feeling better soon after starting this drug.

What do I do if my child misses a dose?

• Give a missed dose as soon as you think about it.
• If it is close to the time for your child's next dose, skip the missed dose and go back to your child's normal time.
• Do not give 2 doses or extra doses.
• Many times this drug is given on an as needed basis.

What safety measures do I need to take when my child is using this drug?

• Have your child wear disease medical alert ID (identification).
• If your child has glaucoma, talk with the doctor.
• If your child has heart disease, talk with the doctor.
• If your child has high blood pressure, talk with the doctor.
• If your child has a bowel block, talk with the doctor.
• If your child has PKU, talk with your child's doctor. Some products have phenylalanine.
• If your child has thyroid disease, talk with the doctor.
• If your child has trouble passing urine, talk with the doctor.
• Check all drugs your child is taking with your child's doctor. This drug may not mix well with some other drugs.
• Keep a list of all your child's drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child's doctor.
• Avoid giving your child other drugs and natural products that may slow your child's actions.
• If your child is being skin tested for allergies, tell the doctor.
• This drug may cause your child to be less alert. Have your child avoid tasks or actions that call for alertness. These include playing (for example, riding a bicycle, rollerblading, sports) or using items that call for your child to have focus or coordination (for example, scissors, lawnmower, electric scooters, or toy cars). Your child's actions will be closely watched until you see how this drug affects him/her. School work may be hard for your child to focus on and get done.

What are some side effects of this drug?

• Feeling lightheaded, sleepy, having blurred eyesight, or a change in thinking clearly. Have your child avoid tasks or actions that call for him/her to be alert or have clear eyesight until you see how this drug works.
• Hard stools (constipation). Drinking more liquids, working out, or adding fiber to your diet may help. Talk with your doctor about a stool softener or laxative.
• Dry mouth. Good mouth care may help. Older children may suck hard, sugar-free candy. Have your child see a dentist often.
• Unexpected excitement may rarely happen.

When do I need to call my child's doctor?

• If any of this news causes you to be worried, any of the unwanted side effects happen, or if your child is not better after taking this drug.
• If you think there has been an overdose, call 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (http://www.aapcc.org), or emergency room (ER) right away.http://www.aapcc.org), or emergency room (ER) right away.
• If your child shows signs of a very bad reaction, call your child's doctor or the ER right away. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; swelling of face, lips, tongue, or throat; or if your child is not acting normal.
• If your child is feeling very tired or weak.
• If your child is feeling very nervous and excitable.
• If your child gets a rash.
• If your child’s health problem does not get better or if you believe your child’s health problem is worse.

How do I store and/or throw out this drug?

• Oral:
• Store at room temperature.
• Store in a dry place. Do not store in a bathroom.
• Shot:
• The shot will be given to your child in a hospital or doctor's office. You will not store it at home.

General drug facts

• If your child has a very bad allergy, he/she needs to wear an allergy ID at all times.
• Your child may only get some products of this drug by drug order. If there are refills, call your pharmacy. If no refills are left, you may need to call your child's doctor.
• Get rid of this drug when your child no longer needs it or if the drug is outdated.
• If you have any questions about this drug, please talk with your doctor, pharmacist, or other health care provider.
• In Canada, take any unused drugs to the pharmacy. Also, visit http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/med/disposal-defaire-eng.php#th to learn about the right way to get rid of unused drugs.http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/med/disposal-defaire-eng.php#th to learn about the right way to get rid of unused drugs.
• Do not share your child's drug with others and do not give anyone else's drug to your child.
• Keep all drugs out of the reach of children and pets.
• Keep a list of all your child's drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child's doctor.
• These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
• Talk with the doctor before giving your child any new drug, including OTC, natural products, or vitamins.
• If you do not use a drug the right way, it may not be safe. Follow what your child’s doctor tells you.

This information should not be used to decide whether or not to take this medicine or any other medicine. Only your healthcare provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your healthcare provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.

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