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Carbaphen 12

Generic Name: Phenylephrine, Chlorpheniramine, and Carbetapentane Liquid (FEN il EF rin, KLOR fen IR a meen, & kar bay ta PEN tane)
Brand Name: Carbaphen 12
Easy-to-read patient leaflet for Carbaphen 12. Includes indications, proper use, special instructions, precautions, and possible side effects.
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Drug Information:
This is not a list of all drugs or health problems that interact with Carbaphen 12 (phenylephrine, chlorpheniramine, and carbetapentane liquid). 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 Carbaphen 12 (phenylephrine, chlorpheniramine, and carbetapentane liquid) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor. Learn more

Carbaphen 12 Side Effects

Carbaphen 12 Side Effects

Note: This document contains side effect information about carbetapentane / chlorpheniramine / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Carbaphen 12.

For the Consumer

Applies to carbetapentane/chlorpheniramine/phenylephrine: oral liquid

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.

What are some other side effects of this drug?

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.

For Healthcare Professionals

Applies to carbetapentane/chlorpheniramine/phenylephrine: oral suspension extended release, oral tablet extended release

Nervous system

Nervous system side effects have included drowsiness and sedation.


Gastrointestinal side effects have included dryness of mucous membranes.

Editorial References and Review

Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.

Source: Drugs.com Carbaphen 12