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Novahistex Dh: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx) NARCOTICS (CDSA I) Current status: Cancelled Post Market
Strength:
5 mg / 20 mg

Patient Medication Information: uses, side effects, how to take - Novahistex Dh

Serious Warnings and Precautions

  • Even if you take NOVAHISTEX DH as prescribed you are at a risk for opioid addiction, abuse and misuse. This can lead to overdose and death.
  • You may get life-threatening breathing problems while taking NOVAHISTEX DH. This is less likely to happen if you take it as prescribed by your doctor. Babies are at risk of life-threatening breathing problems if their mothers take opioids while pregnant or nursing.
  • You should never give anyone your NOVAHISTEX DH. They could die from taking it. If a person has not been prescribed NOVAHISTEX DH, taking even one dose can cause a fatal overdose. This is especially true for children.
  • If you took NOVAHISTEX DH while you were pregnant, whether for short or long periods of time or in small or large doses, your baby can suffer life-threatening withdrawal symptoms after birth. This can occur in the days after birth and for up to 4 weeks after delivery. If your baby has any of the following symptoms:

    • has changes in their breathing (such as weak, difficult or fast breathing)
    • is unusually difficult to comfort
    • has tremors (shakiness)
    • has increased stools, sneezing, yawning, vomiting, or fever

Seek immediate medical help for your baby.

  • Taking NOVAHISTEX DH with other opioid medicines, benzodiazepines, alcohol, or other central nervous system depressants (including street drugs) can cause severe drowsiness, decreased awareness, breathing problems, coma, and death.

What is NOVAHISTEX DH used for?

NOVAHISTEX DH is a prescription medicine for adults, used to treat cough associated with colds that is not responding to other medications.

NOVAHISTEX DH is not for use in patients younger than 18 years of age. In patients this age, the risks of life-threatening breathing problems outweigh the benefits of treating the cough with hydrocodone.

How does NOVAHISTEX DH work?

NOVAHISTEX DH contains two ingredients, hydrocodone bitartrate and phenylephrine HCl.

Hydrocodone bitartrate helps suppress cough by acting on the cough center in the brain. Phenylephrine HCl works by constricting blood vessels in the nasal passages, helping to relieve nasal congestion.

What are the ingredients in NOVAHISTEX DH?

Medicinal ingredients: Hydrocodone bitartrate and phenylephrine HCl

Non-medicinal ingredients: Amaranth color, artificial raspberry flavour, artificial taste modifier, citric acid, liquid glucose, glycerine, menthol, propylene glycol, purified water, sodium benzoate, sodium chloride, sodium citrate, sodium cyclamate and xylitol. Alcohol free.

NOVAHISTEX DH comes in the following dosage forms:

Syrup, hydrocodone bitartrate 5 mg and phenylephrine HCl 20 mg per 5 mL

Do not use NOVAHISTEX DH if:

  • your doctor did not prescribe it for you
  • you are allergic to hydrocodone bitartrate and phenylephrine HCl or to any of the other ingredients in NOVAHISTEX DH (see What are the ingredients in NOVAHISTEX DH?), or other opioid analgesics
  • you have severe asthma, trouble breathing, or other breathing problems
  • you have any heart problems
  • you have bowel blockage or narrowing of the stomach or intestines
  • you have severe pain in your abdomen
  • you have a head injury
  • you have a brain tumor
  • you are at risk for having seizures
  • you suffer from alcoholism
  • you are going to have, or recently had, a planned surgery
  • you are taking or have taken within the past 2 weeks a Monoamine Oxidase inhibitor (MAOi) (such as phenelzine sulphate, tranylcypromine sulphate, moclobemide or selegiline)

To help avoid side effects and ensure proper use, talk to your healthcare professional before you take NOVAHISTEX DH. Talk about any health conditions or problems you may have, including if you:

  • have a history of illicit or prescription drug or alcohol abuse
  • have severe kidney, liver or lung disease
  • have diabetes
  • have glaucoma
  • have heart problems or peripheral vascular disease (problems with your blood vessels)
  • have low blood pressure
  • have high blood pressure
  • have past or current depression
  • suffer from chronic or severe constipation
  • have problems with your thyroid, adrenal or prostate gland
  • have, or had in the past hallucinations or other severe mental problems
  • suffer from migraines
  • are pregnant or planning to become pregnant

Other warnings you should know about:

Some people metabolize hydrocodone at a much faster rate than the general population. This which may lead to accidental overdose especially in patients younger than 18 years of age. Stop taking NOVAHISTEX DH and seek immediate medical help if you start feeling confused, have shallow breathing, or extreme sleepiness. If you know that you metabolize hydrocodone at a much faster rate, tell your doctor BEFORE starting this medication.

Stop taking NOVAHISTEX DH and consult with your healthcare professional if:

  • you get a high fever, rash or persistent headache while taking NOVAHISTEX DH along with the cough.
  • your symptoms or cough worsen or continue for more than 7 days.

These could be signs of a serious condition.

Use in Children

Young children are at greater risk of the sedating effects of narcotic cough drugs. The use of hydrocodone in young children has led to slow, shallow or weak breathing that has been fatal.. NOVAHISTEX DH is not for use in patients younger than 18 years of age.

Opioid dependence and addiction:

As with all opioids, taking NOVAHISTEX DH may cause you to become dependent on it. Do not take more than the dose prescribed to you by your doctor. There are important differences between physical dependence and addiction. It is important that you talk to your doctor if you have questions or concerns about abuse, addiction or physical dependence. As with all opioids, taking hydrocodone may cause you to become dependent on it. Do not take more than the dose prescribed to you by your doctor.

Pregnancy, nursing, labour and delivery:

Opioids can be transferred to your baby through breast milk, or while still in the womb. NOVAHISTEX DH can then cause life-threatening breathing problems in your unborn baby or nursing infant. Your doctor will determine if the benefits of using NOVAHISTEX DH outweigh the risks to your unborn baby or nursing infant.

If you are pregnant and are taking NOVAHISTEX DH, it is important that you don’t stop taking your medication all of a sudden. If you do, it can cause a miscarriage or a still-birth. Your doctor will monitor and guide you on how to slowly stop taking NOVAHISTEX DH. This may help avoid serious harm to your unborn baby.

Driving and using machines: Before you do tasks which may require special attention, you should wait until you know how you react to NOVAHISTEX DH. NOVAHISTEX DH can cause:

  • drowsiness
  • dizziness or
  • lightheadedness

This can usually occur after you take your first dose and when your dose is increased.

Serotonin Syndrome: NOVAHISTEX DH can cause Serotonin Syndrome, a rare but potentially life-threatening condition. It can cause serious changes in how your brain, muscles and digestive system work. You may develop Serotonin Syndrome if you take NOVAHISTEX DH with certain antidepressants or migraine medications.

Serotonin Syndrome symptoms include:

  • fever, sweating, shivering, diarrhea, nausea, vomiting;
  • muscle shakes, jerks, twitches or stiffness, overactive reflexes, loss of coordination;
  • fast heartbeat, changes in blood pressure;
  • confusion, agitation, restlessness, hallucinations, mood changes, unconsciousness, and coma.

Disorder of the adrenal gland: You may develop a disorder of the adrenal gland called adrenal insufficiency. This means that your adrenal gland is not making enough of certain hormones. You may experience symptoms such as:

  • nausea, vomiting
  • feeling tired, weak or dizzy
  • decreased appetite

You may be more likely to have problems with your adrenal gland if you have been taking opioids for longer than one month. Your doctor may do tests, give you another medication, and slowly take you off NOVAHISTEX DH.

Sexual Function/Reproduction: Long term use of opioids may lead to a decrease in sex hormone levels. It may also lead to low libido (desire to have sex), erectile dysfunction or being infertile.

Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.

The following may interact with NOVAHISTEX DH:

  • alcohol. This includes prescription and non-prescription medications that contain alcohol. Do not drink alcohol while you are taking NOVAHISTEX DH. It can lead to:

    • drowsiness
    • unusually slow or weak breathing
    • serious side effects or
    • a fatal overdose
  • other sedative drugs which may enhance the drowsiness caused by NOVAHISTEX DH
  • opioid analgesics (drugs used to treat pain)
  • general anesthetics (drugs used during surgery)
  • benzodiazepines (drugs used to help you sleep or that help reduce anxiety)
  • antidepressants (for depression and mood disorders). Do not take NOVAHISTEX DH with MAO inhibitors (MAOi) or if you have taken MAOi’s in the last 14 days.
  • drugs used to treat serious mental or emotional disorders (such as schizophrenia)
  • anti-retroviral drugs (use to treat viral infections)
  • anti-fungal drugs (used to treat fungal infections)
  • antibiotic drugs (used to treat bacterial infections
  • antihistamines (drugs used to treat allergies)
  • anti-emetics (drugs used to prevent vomiting)
  • drugs used to treat muscle spasms and back pain
  • some heart medication (such as beta blockers)
  • drugs used to treat migraines (e.g. triptans)
  • St. John’s Wort

How to take NOVAHISTEX DH:

  • Your doctor will prescribe the lowest dose that works to control your symptoms.
  • It is recommended that you only take NOVAHISTEX DH for up to 7 days. If you need to take NOVAHISTEX DH for longer, your doctor will determine the best dose for you to lower the risk of side effects and overdose. Higher doses can lead to more side effects and a greater chance of overdose.
  • NOVAHISTEX DH may be taken with or without food.

Usual Dose:

Adults:

5 mL every 4 hours. Do not use for longer than 7 days.

Be sure to use NOVAHISTEX DH only for the condition for which it was prescribed.

If you develop any side effect as a result of taking NOVAHISTEX DH, tell your doctor immediately.

Stopping your Medication

If you have been taking NOVAHISTEX DH for more than a few days you may experience some of the following uncomfortable symptoms when you stop taking it:

  • body aches
  • diarrhea
  • goosebumps
  • loss of appetite
  • nausea
  • feeling nervous or restless
  • runny nose
  • sneezing
  • tremors or shivering
  • stomach cramps
  • rapid heart rate (tachycardia)
  • having trouble sleeping
  • an unusual increase in sweating
  • heart palpitations
  • an unexplained fever
  • weakness
  • yawning

Refilling your Prescription for NOVAHISTEX DH:

A new written prescription is required from your doctor each time you need more NOVAHISTEX DH. Therefore, it is important that you contact your doctor before your current supply runs out.

Only obtain prescriptions for this medicine from the doctor in charge of your treatment. Do not seek prescriptions from other doctors unless you switch to another doctor.

Overdose:

If you think you have taken too much NOVAHISTEX DH, contact your healthcare professional, hospital emergency department or regional Poison Control Centre immediately, even if there are no symptoms.

Signs of overdose may include:

  • unusually slow or weak breathing
  • dizziness
  • confusion
  • extreme drowsiness
  • convulsion
  • tachycardia (heart palpitations)
  • constriction of the pupils
  • nausea
  • vomiting

Missed Dose:

If you missed a dose of this medication, take it as soon as you remember. But if it is almost time for your next dose, skip the missed dose and continue with your next scheduled dose. Go back to the regular dosing schedule. Do not take two doses at the same time.

What are possible side effects from using NOVAHISTEX DH?

These are not all the possible side effects you may feel when taking NOVAHISTEX DH. If you experience any side effects not listed here, contact your healthcare professional.

Side effects may include:

  • drowsiness
  • insomnia
  • dizziness
  • fainting
  • nausea, vomiting, or a poor appetite
  • dry mouth
  • headache
  • problems with vision
  • weakness, uncoordinated muscle movement
  • itching
  • light-headedness
  • sweating
  • constipation
  • mild mental stimulation
  • convulsions
  • urinary retention
  • low sex drive, impotence (erectile dysfunction), infertility

Talk with your doctor or pharmacist about ways to prevent constipation when you start using NOVAHISTEX DH.

Serious side effects and what to do about them

Symptom / effectTalk to your healthcare professionalStop taking drug and get immediate medical help
Only if severeIn all cases

RARE

Overdose: hallucinations, confusion, inability to walk normally, slow or weak breathing, extreme sleepiness, sedation, or dizziness, floppy muscles/low muscle tone cold and clammy skin, convulsion

✓
Respiratory Depression: slow, shallow or weak breathing✓
Allergic Reaction: rash, hives, swelling of the face, lips, tongue or throat, difficulty swallowing or breathing✓

Bowel Blockage (impaction):

abdominal pain, severe constipation, nausea

✓
Withdrawal: nausea, vomiting, diarrhea, anxiety, shivering, cold and clammy skin, body aches, loss of appetite, sweating✓
Fast, Slow or Irregular Heartbeat: heart palpitations✓
Low Blood Pressure: dizziness, fainting, light-headedness✓
Serotonin Syndrome: agitation or restlessness, loss of muscle control or muscle twitching, tremor, diarrhea✓

If you have a troublesome symptom or side effect that is not listed here or becomes bad enough to interfere with your daily activities, talk to your healthcare professional.

Reporting Side Effects

You can report any suspected side effects associated with the use of health products to Health Canada by:

  • Visiting the Web page on Adverse Reaction Reporting (https://www.canada.ca/en/health-canada/services/drugs-health-products/medeffect-canada.html ) for information on how to report online, by mail or by fax; or
  • Calling toll-free at 1-866-234-2345.

NOTE: Contact your health professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.

Storage:

  • Keep unused or expired NOVAHISTEX DH in a secure place to prevent theft, misuse or accidental exposure to children and pets.
  • Keep NOVAHISTEX DH under lock, out of sight and reach of children and pets.
  • Never take medicine in front of small children as they will want to copy you. Accidental ingestion by a child is dangerous and may result in death. If a child accidentally takes NOVAHISTEX DH, get emergency help right away.
  • Store at room temperature (15 – 30°C).

Disposal:

NOVAHISTEX DH should never be thrown into household trash, where children and pets may find it. It should be returned to a pharmacy for proper disposal.

If you want more information about NOVAHISTEX DH:

  • Talk to your healthcare professional
  • Find the full product monograph that is prepared for healthcare professionals and includes this consumer medication information by visiting the Health Canada website (https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database.html); the manufacturer’s website www.sanofi.ca, or by calling 1-800-265-7927.

Last Revised: November 14, 2019

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02049481

Revision date stated in the text: November 14, 2019

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Novahistex Dh

Rx or OTC
Prescription (Rx)?
DIN 02049481
Schedule(s) NARCOTICS (CDSA I)
Risk Management Plans A Canadian Specific Opioid targeted Risk Management Plan (CSO-tRMP) for this product was submitted.
Active ingredient(s) Hydrocodone bitartrate 5 MG, Phenylephrine hydrochloride 20 MG
Dosage form(s) Syrup
Route(s) of administration Oral
Drug class (WHO ATC)
  1. R Respiratory system drugs
    1. R05 Cough and cold preparations
      1. R05D Cough suppressants, excl. combinations with expectorants
        1. R05DA Opium alkaloids and derivatives, cough suppressants
          1. R05DA20 Combinations
Company SANOFI-AVENTIS CANADA INC
Current status Cancelled Post Market
Current status date April 9, 2020

Source: Health Canada – Drug Product Database (DPD) and product monographs, data as of November 1, 2026. Data from the Health Canada Drug Product Database, as published there. Not a substitute for the advice of a doctor or pharmacist.