Vi-Sudo

Generic name: pseudoephedrine and triprolidine [ soo-doe-e-FED-rin-and-try-PROE-li-deen- ]
Brand names: Aphedrid, A-Phedrin, Aprodine, Vi-Sudo, Wal-Act, Histafed
Drug class: Upper respiratory combinations

Medically reviewed by Drugs.com on Aug 10, 2023. Written by Cerner Multum.

What is Vi-Sudo?

Vi-Sudo is a combination antihistamine and decongestant medicine that is used to treat runny or stuffy nose, sneezing, itching, watery eyes, and sinus congestion caused by allergies or the common cold.

Vi-Sudo may also be used for purposes not listed in this medication guide.

Vi-Sudo side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Vi-Sudo may cause serious side effects. Stop using Vi-Sudo and call your doctor at once if you have:

• severe dizziness;

• nervousness;

• trouble sleeping; or

• high blood pressure (severe headache, pounding in your neck or ears).

Common side effects of Vi-Sudo may include:

• dizziness, drowsiness;

• dry mouth, nose, or throat;

• constipation;

• blurred vision; or

• feeling restless or excited (especially in children).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Warnings

Do not use the medicine to make a child sleepy. Misuse of this medicine may cause death in very young children.

Before taking this medicine

You should not use Vi-Sudo if you are allergic to pseudoephedrine or triprolidine.

Do not use Vi-Sudo if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, tranylcypromine, and others.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had:

• asthma or other breathing disorder such as emphysema or chronic bronchitis;

• high blood pressure, heart disease;

• glaucoma;

• diabetes; or

• a thyroid disorder.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

How should I take Vi-Sudo?

Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use until your symptoms clear up.

Measure liquid medicine with the supplied syringe or a dose-measuring device (not a kitchen spoon).

Always follow directions on the medicine label about giving cough or cold medicine to a child. Do not use the medicine only to make a child sleepy. Death can occur from the misuse of cough or cold medicines in very young children.

Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.

Store at room temperature away from moisture and heat.

Related/similar drugs

prednisone, fluticasone nasal, cetirizine, montelukast, diphenhydramine, promethazine, Zyrtec, Benadryl, chlorpheniramine, Promethazine DM

What happens if I miss a dose?

Since Vi-Sudo 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.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking Vi-Sudo?

Avoid driving or hazardous activity until you know how Vi-Sudo will affect you. Your reactions could be impaired.

Ask a doctor or pharmacist before using other cough or cold medicines that may contain similar ingredients.

Drinking alcohol can increase certain side effects of triprolidine.

What other drugs will affect Vi-Sudo?

Ask a doctor or pharmacist before using other medicines that can cause drowsiness (such as opioid medication, sleep medicine, a muscle relaxer, or medicine for anxiety or seizures). Not all possible interactions are listed here.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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

Medical Disclaimer

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