TheraFlu (Cough/Cold/Flu Combinations, Solid Formulations)

By Medically reviewed by hellodoktor

Generic Name: TheraFlu (Cough/Cold/Flu Combinations, Solid Formulations) Brand Name(s): Generics only. No brands available.


What is TheraFlu® Caplet used for?

TheraFlu® Caplet is commonly used for reducing temporarily these symptoms minor aches and pains; minor sore throat pain; headache; nasal and sinus congestion; cough due to minor throat; bronchial irritation; temporarily reduces fever.

How should I take TheraFlu® Caplet?

For orally taken form, you should:

  • Take TheraFlu® Caplet by mouth as directed by your doctor concerning: dose, schedule.
  • Read the label carefully before using TheraFlu®.
  • Consult your doctor for any information on the label that you do not clearly understand.

How do I store TheraFlu® Caplet?

TheraFlu® Caplet is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store TheraFlu® Caplet in the bathroom or the freezer. There may be different brands of TheraFlu® Caplet that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush TheraFlu® Caplet down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using TheraFlu® Caplet?

Before using this drug, tell your doctor if:

  • You are pregnant or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.
  • You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines.
  • You have allergy with any of active or inactive ingredients of TheraFlu ® Caplet or other medications.
  • You have any other illnesses, disorders, or medical conditions.
  • You have used any other health conditions, drugs that have a risk of interaction with TheraFlu ® Caplet as having severe high blood pressure, severe heart blood vessel disease, rapid heartbeat, or severe heart problems or being unable to urinate or being having an asthma attack; taking another medicine that contains acetaminophen or diphenhydramine (including topical medicines); taking sodium oxybate (GHB) or furazolidone or a monoamine oxidase inhibitor (MAOI) (e.g., phenelzine) within the last 14 days.

Is it safe during pregnancy or breastfeeding?

There are no adequate studies in women for determining risk when using TheraFlu ® Caplet during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking TheraFlu ® Caplet. TheraFlu ® Caplet is pregnancy risk category N, according to the US Food and Drug Administration (FDA).

FDA pregnancy risk category reference below:

  • A=No risk
  • B=No risk in some studies
  • C=There may be some risk
  • D=Positive evidence of risk
  • X=Contraindicated
  • N=Unknown

Side effects

What side effects can occur from TheraFlu® Caplet?

Some of side effects may occur:

  • Constipation
  • Diarrhea
  • Dizziness
  • Drowsiness
  • Excitability
  • Headache
  • Loss of appetite
  • Nausea
  • Nervousness or anxiety
  • Trouble sleeping
  • Upset stomach
  • Vomiting
  • Weakness
  • Rash
  • Hives
  • Itching
  • Difficulty breathing
  • Tightness in the chest
  • Swelling of the mouth, face, lips, or tongue
  • Confusion
  • Difficulty urinating or inability to urinate
  • Fast or irregular heartbeat
  • Hallucinations
  • Mood or mental changes
  • Seizures
  • Severe drowsiness
  • Severe or persistent dizziness, nervousness, light-headedness, or headache
  • Severe or persistent trouble sleeping
  • Symptoms of liver problems (e.g., dark urine, pale stools, persistent loss of appetite, right-upper stomach pain, yellowing of the skin or eyes)
  • Tremor
  • Vision changes

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with TheraFlu® Caplet?

TheraFlu ® Caplet may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Products that may interact with this drug are:

  • Anticoagulants (e.g., warfarin) or isoniazid
  • Digoxin or droxidopa
  • Beta-blockers (e.g., propranolol)
  • Catechol-o-methyltransferase (COMT) inhibitors (e.g., tolcapone)
  • Furazolidone
  • Indomethacin
  • MAOIs (e.g., phenelzine)
  • Sodium oxybate (GHB)
  • Tricyclic antidepressants (e.g., amitriptyline)
  • Bromocriptine or hydantoins (e.g., phenytoin)
  • Guanadrel, guanethidine, mecamylamine, methyldopa, or reserpine

Does food or alcohol interact with TheraFlu® Caplet?

TheraFlu® Caplet may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with TheraFlu® Caplet?

TheraFlu® Caplet may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using TheraFlu® Caplet.

What is the dose of TheraFlu® Caplet for an adult?

Recommended dose is 2 caplets every 4 hours, while symptoms persist.

Do not take more than 10 caplets in 24 hours unless directed by a doctor.

What is the dose of TheraFlu® Caplet for a child?

Recommended dose for children more than 12 years of age is 2 caplets every 4 hours, while symptoms persist.

For children less than 12 years old: use of TheraFlu® Caplet is not recommended.

How is TheraFlu® Caplet available?

TheraFlu® Caplet is available in the following dosage forms and strengths:

  • Caplet: Acetaminophen; Dextromethorphan Hydrobromide; Phenylephrine Hydrochloride

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of TheraFlu® Caplet, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

msBahasa Malaysia

Review Date: July 3, 2017 | Last Modified: September 13, 2019

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