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D-Tann

Generic Name: Diphenhydramine/Phenylephrine Chewable Tablets (dye fen HYE dra meen/fen ill EF rin)
Brand Name: D-Tann, Pediatex-CT

Medically reviewed on Sep 5, 2018

Uses of D-Tann:

  • It is used to treat nose stuffiness.
  • It is used to ease allergy signs.

What do I need to tell my doctor BEFORE I take D-Tann?

This is not a list of all drugs or health problems that interact with D-Tann (diphenhydramine/phenylephrine chewable tablets).

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take D-Tann (diphenhydramine/phenylephrine chewable tablets) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take D-Tann?

  • Tell all of your health care providers that you take D-Tann (diphenhydramine/phenylephrine chewable tablets). This includes your doctors, nurses, pharmacists, and dentists.
  • Do not take more than what your doctor told you to take. Taking more than you are told may raise your chance of very bad side effects.
  • Do not take D-Tann (diphenhydramine/phenylephrine chewable tablets) for longer than you were told by your doctor.
  • Avoid driving and doing other tasks or actions that call for you to be alert until you see how D-Tann (diphenhydramine/phenylephrine chewable tablets) affects you.
  • Avoid drinking alcohol while taking D-Tann (diphenhydramine/phenylephrine chewable tablets).
  • Talk with your doctor before you use other drugs and natural products that slow your actions.
  • Do not use with other products that have diphenhydramine.
  • Use with care in children. Talk with the doctor.
  • If you are 65 or older, use D-Tann (diphenhydramine/phenylephrine chewable tablets) with care. You could have more side effects.
  • Different brands of D-Tann (diphenhydramine/phenylephrine chewable tablets) may have different doses for children. Talk with the doctor before giving D-Tann (diphenhydramine/phenylephrine chewable tablets) to a child.
  • If you have phenylketonuria (PKU), talk with your doctor. Some products have phenylalanine.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using D-Tann (diphenhydramine/phenylephrine chewable tablets) while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

How is this medicine (D-Tann) best taken?

Use D-Tann (diphenhydramine/phenylephrine chewable tablets) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Take with or without food. Take with food if it causes an upset stomach.
  • Chew or crush well. Do not swallow it whole.

What do I do if I miss a dose?

  • If you take D-Tann (diphenhydramine/phenylephrine chewable tablets) on a regular basis, take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.
  • Many times D-Tann (diphenhydramine/phenylephrine chewable tablets) is taken on an as needed basis. Do not take more often than told by the doctor.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Very bad dizziness or passing out.
  • A heartbeat that does not feel normal.
  • A fast heartbeat.
  • Feeling very tired or weak.
  • Any unexplained bruising or bleeding.
  • Change in balance.
  • Feeling confused.
  • Shakiness.
  • Change in eyesight.
  • Seizures.
  • Trouble passing urine.

What are some other side effects of D-Tann?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Dizziness.
  • Feeling nervous and excitable.
  • Not able to sleep.
  • Feeling sleepy.

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.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out D-Tann?

  • Store at room temperature.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer information use

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about D-Tann (diphenhydramine/phenylephrine chewable tablets), please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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