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Riva-Tramadol/Acet: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx) NARCOTICS (CDSA I) Current status: Cancelled Post Market
Strength:
37.5 mg / 325 mg

Patient Medication Information: uses, side effects, how to take - Riva-Tramadol/Acet

ABOUT THIS MEDICATION

What the medication is used for:

RIVA-TRAMADOL/ACET (tramadol hydrochloride and acetaminophen) is an analgesic. An analgesic is a medication that is used to relieve pain. RIVA-TRAMADOL/ACET tablets are prescribed by doctors for the management of moderate pain, or moderately severe pain. Your doctor is the person who knows if RIVA-TRAMADOL/ACET tablets are a good choice for you.

What it does:

RIVA-TRAMADOL/ACET tablets have a combination of two pain relievers - tramadol hydrochloride (an opioid analgesic) and acetaminophen. You may already be familiar with acetaminophen (one brand sold as TYLENOL®), which acts quickly to relieve pain. Tramadol hydrochloride is a pain reliever that works over several hours to maintain pain relief. Because these two ingredients work together, RIVA-TRAMADOL/ACET tablets relieve your pain quickly and help that pain relief last longer.

When it should not be used:

You should not use RIVA-TRAMADOL/ACET if you are allergic to tramadol, acetaminophen, opioids or to any of the non-medicinal ingredients in the product (see What the nonmedicinal ingredients are). Contact your doctor immediately if you experience an allergic reaction such as wheezing, skin rash, itching or hives or any severe or unusual side effects.

You should never take TYLENOL® or any other products containing acetaminophen with RIVA-TRAMADOL/ACET.

RIVA-TRAMADOL/ACET should not be used for minor pain that can be relieved by readily available (over-the-counter) painkillers.

Children under 18 years of age should not take RIVA-TRAMADOL/ACET tablets.

Use of RIVA-TRAMADOL/ACET tablets in pregnant women is not recommended. It is not clear what effects the medication would have on the fetus.

RIVA-TRAMADOL/ACET tablets are not recommended for obstetrical preoperative medication or for post-delivery analgesia in nursing mothers because its safety in infants and newborns has

not been studied.

If you have had seizures (convulsions) or have a condition that may put you at increased risk of seizures (epilepsy, head injury, metabolic disorders, alcohol or drug withdrawal), are taking monoamine oxidase (MAO) inhibitors, have an infection of the central nervous system, or are taking antidepressant medication, do not take this medication before discussing your history with your doctor.

Like some pain relievers, RIVA-TRAMADOL/ACET tablets may be habit-forming. RIVA-TRAMADOL/ACET tablets may not be the best medicine for you if you have had problems with addiction, drug dependence, or drug abuse in the past. Tell your doctor and pharmacist if you have had these conditions before.

What the medicinal ingredients are:

RIVA-TRAMADOL/ACET tablets combine two centrally acting analgesics, tramadol hydrochloride and acetaminophen.

What the nonmedicinal ingredients are:

Nonmedicinal ingredients for RIVA-TRAMADOL/ACET are: hydroxyl propyl methyl cellulose, titanium dioxide, polyethylene glycol, iron oxide yellow, polysorbate 80, pregelatinized starch, powdered cellulose, sodium starch glycolate, maize starch and magnesium stearate.

What dosage forms it comes in:

Each RIVA-TRAMADOL/ACET tablet contains 37.5 mg tramadol hydrochloride, and 325 mg acetaminophen.

WARNINGS AND PRECAUTIONS

BEFORE you use RIVA-TRAMADOL/ACET, be sure to tell your doctor or pharmacist if you have:

  • suffer from serious liver or kidney disease,
  • have diabetes,
  • are over 65 years of age,
  • have abdominal problems,
  • have had a previous head injury,
  • have chronic alcoholism,
  • are pregnant or plan to become pregnant,
  • are breast-feeding, and
  • if you are taking any other medications including natural health products, prescription drugs, salicylates, other pain and fever relief medications or nonsteroidal anti-inflammatory drugs (NSAIDS).

This will help your doctor to decide whether you should use RIVA-TRAMADOL/ACET and what extra care should be taken during its use.

RIVA-TRAMADOL/ACET can decrease your blood sugar levels. Diabetic patients may need to monitor their blood sugar more often. If you notice changes, discuss this with your doctor.

If you are planning surgery, or about to undergo surgery, tell your doctor that you are taking RIVA-TRAMADOL/ACET.

You should take the following precautions while taking RIVA-TRAMADOL/ACET tablets:

Serious skin reactions (Stevens-Johnson Syndrome, Toxic Epidermal Necrolysis, Hypersensivity Syndrome).

Acetaminophen can cause serious skin reactions that can spread to your mouth, lips, face, hands, trunk, arms and legs. This condition is life-threatening.

Liver Injury

Liver injury can occur when more than the maxiumum daily dose of acetaminophen is taken. Follow your doctor’s instructions to know how much acetaminophen you can take in a day. Acetaminophen can be in oral solutions/drops, syrup, pills, capsules, suppositories, intravenous solutions etc. To calculate how much acetaminophen you have had in a day, read the labels on all products to see if they contain acetaminophen. Keep track of how much acetaminophen is in each dose and how much you have taken in a 24 hour period. Seek medical attention as soon as an acetaminophen overdose is suspected. Do not wait for symptoms to appear (see Overdose).

Alcohol

You should not take RIVA-TRAMADOL/ACET tablets with any alcohol-containing beverages. Also, you should tell your doctor if you drink alcohol regularly, or have a history of alcoholism.

Driving or operating machinery

Do not drive a car or operate other potentially hazardous machinery until you are sure that taking RIVA-TRAMADOL/ACET does not make you drowsy.

Other medications

You should not take other medications that contain tramadol, or acetaminophen (including over-the-counter preparations containing acetaminophen) while you are taking RIVA-TRAMADOL/ACET tablets.

There are also other drugs, such as tranquillizers, antidepressants, hypnotics, sleeping pills, certain Parkinson’s disease medications, or other analgesics, that can cause some serious reactions when taken by someone who is also taking RIVA-TRAMADOL/ACET tablets. You must tell your doctor and pharmacist if you are taking any other medications—they will tell you what you should do.

INTERACTIONS WITH THIS MEDICATION

There are other medications that may cause RIVA-TRAMADOL/ACET tablets to be less effective, or may cause you to have some side effects or drug reactions.

Drugs that may interact with RIVA-TRAMADOL/ACET include: fluoxetine, paroxetine, quinidine, amitriptyline, carbamazepine, MAO inhibitors and serotonin reuptake inhibitors, digoxin, warfarin-like compounds.

You must tell your doctor and pharmacist if you are taking any other medications.

PROPER USE OF THIS MEDICATION

Usual adult dose:

You may take your RIVA-TRAMADOL/ACET tablets with or without food. Take the tablets only as directed by your doctor. It is very important that you do not take more tablets than your doctor advised. Usually, 1 or 2 tablets are taken every 4 to 6 hours when needed for relief of pain. When you first begin taking your tablets, your doctor may ask you to start slowly and gradually increase the number of tablets you take.

However, you should not take more than 8 tablets per day. Exceeding these recommendations can result in respiratory depression (shallow, slow breathing), seizures, liver damage, coma, heart stoppage and death. Taking a significant overdose can result in hepatic toxicity.

In patients with kidney problems, the time between doses may be longer. Please speak with your doctor.

Discontinuation:

Stopping the RIVA-TRAMADOL/ACET tablets too quickly may cause some side effects, so your doctor may ask you to gradually stop taking your medication over several days. To get the full benefit from your treatment, it is important to take RIVA-TRAMADOL/ACET tablets as prescribed.

Overdose:

In Case of Accidental Overdose: Call a Poison Control Centre or doctor immediately, even if you do not notice any signs of symptoms such as increased sweating, nausea, vomiting, stomach pain or loss of appetite.

Signs and symptoms of liver damage may develop 1 to 2 days after taking an overdose.

Missed Dose:

If you miss a dose, take it as soon as you remember. But, if it is almost time for the next dose, do not take the missed dose. Instead, take the next scheduled dose. Do not try to make up for the missed dose by taking a double dose next time.

SIDE EFFECTS AND WHAT TO DO ABOUT THEM

Most medications have some side effects; however, not all people have the same side effects, and some people experience few, if any, side effects. When taking RIVA-TRAMADOL/ACET tablets the most common side effects include nausea, vomiting, constipation, headache, dizziness and sleepiness. If you experience serious symptoms or any other unusual symptoms, tell your doctor immediately.

If you experience serious symptoms from an allergic reaction such as wheezing, skin rash, itching or hives, difficulty in breathing, lethargy, pallor (paleness), tell your doctor immediately.

Physical dependence, abuse and withdrawal reactions have been rarely reported. See withdrawal reactions listed within the ‘Discontinuation’ section of this leaflet.

RIVA-TRAMADOL/ACET can cause abnormal blood test results including decreased blood sugar. Your doctor will decide when to perform blood tests and will interpret the results.

SERIOUS SIDE EFFECTS, HOW OFTEN THEY HAPPEN

AND WHAT TO DO ABOUT THEM

Symptom / effectTalk with your physician, nurse or pharmacist.

Stop taking drug and Seek

immediate medical help

Only if severeIn all cases
Very Rare

Decreased Blood Sugar

(hypoglycemia):

dizziness, lack of energy, drowsiness, headache, trembling, sweating

✓

Serious Skin

Reactions (Stevens – Johnson Syndrome, Toxic Epidermal Necrolysis,

Hypersensitivity Syndrome): any combination of itchy skin rash, redness, blistering and peeling of the skin and/or of the lips, eyes, mouth, nasal passages or genitals, accompanied by fever, chills,

headache, cough, body aches or joint pain, yellowing of the skin or eyes, dark urine.

✓

Liver Injury:

yellowing of the skin or eyes, dark urine. Abdominal pain, nausea, vomiting, loss of appetite.

✓

This is not a complete list of side effects. For any unexpected effects while taking RIVA-TRAMADOL/ACET, contact your physician or pharmacist.

HOW TO STORE IT

RIVA-TRAMADOL/ACET tablets should be stored at room temperature (15 to 30oC).

Do not use RIVA-TRAMADOL/ACET tablets after the expiry date. All expired medications should be returned to your pharmacist.

Keep this and all medicines in a safe place away from children.

REPORTING SUSPECTED SIDE EFFECTS

You can report any suspected adverse reactions associated with the use of health products to the Canada Vigilance Program by one of the following 3 ways:

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  • Report online at www.healthcanada.gc.ca/medeffect
  • Call toll-free at 1-866-234-2345
  • Complete a Canada Vigilance Reporting Form and:

    • Fax toll-free to 1-866-678-6789, or
    • Mail to: Canada Vigilance Program Health Canada

      Postal Locator 0701E

      Ottawa, ON K1A 0K9

Postage paid labels, Canada Vigilance Reporting Form and the adverse reaction reporting guidelines are available on the MedEffect™ Canada Web site at:

www.healthcanada.gc.ca/medeffect.

NOTE: Should you require information related to the management of side effects, contact your health professional. The Canada Vigilance Program does not provide medical advice

MORE INFORMATION

This document plus the full product monograph, prepared for health professionals can be obtaines by contacting Laboratoire Riva Inc. at 1-800-363-7988.

Laboratoire Riva Inc.

660 Industriel Blvd.

Blainville, Quebec, Canada

J7C 3V4

Last revised: March 17, 2015

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02424959

Revision date stated in the text: March 17, 2015

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 Riva-Tramadol/Acet

Rx or OTC
Prescription (Rx)?
DIN 02424959
Schedule(s) NARCOTICS (CDSA I)
Active ingredient(s) Tramadol hydrochloride 37.5 MG, Acetaminophen 325 MG
Dosage form(s) Tablet
Route(s) of administration Oral
Drug class (WHO ATC)
  1. N Nervous system drugs
    1. N02 Analgesics
      1. N02A Opioid analgesics
        1. N02AJ Opioids in combination with non-opioid analgesics
          1. N02AJ13 Tramadol and paracetamol
Company LABORATOIRE RIVA INC.
Current status Cancelled Post Market
Current status date July 22, 2015

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.