It's not worth the risk.
It's not worth the risk.

Risks of Opioid Use

About Opioids

Opioids can be found in natural substances or created in a laboratory. They are called “psychoactive” substances because they act on the areas of the brain responsible for pain management. Opioids produce an analgesic effect and can trigger euphoria. An inappropriate use of opioids can have health risks.

Many people turn to opioids for their analgesic properties. Opioids have beneficial effects when used as prescribed by a doctor and under the guidance of a pharmacist. They can help relieve pain caused by various temporary or chronic health issues (e.g., cancer).

A few examples of prescription opioids:

  • Oxycodone
  • Morphine
  • Hydromorphone
  • Fentanyl
  • Codeine
  • Methadone

Other people use opioids for their euphoric effect. They often purchase opioids on the black market and may use them inappropriately. In addition, certain opioids found on the black market, such as heroin, come from clandestine labs, which do not ensure the quality of their products.

Methods of consumption

Opioids can be consumed:

  • Orally
  • By inhalation through the nose or mouth
  • By injection
  • Through the skin (transdermal patch)
  • Rectally

Health Risks

Risks relating to prescribed opioids

Opioids, even when prescribed by a physician, can have health risks if they are used inappropriately. The main risks are dependence (addiction) and overdose.

You can limit the risks related to using prescribed opioids by taking the following precautions:

  • Keep opioid medications in their original packaging to know what they are and the consumption guidelines.
  • Store opioids in a secure location, out of reach of children and adolescents.
  • Return any expired or unused opioid medications to the pharmacy to avoid improper use. To avoid harming the environment and human health, never throw medication down the toilet or sink.

Risks relating to black market opioids

The risks associated with black market opioids are high, because the exact composition of these substances is unknown. Regular or casual users therefore risk experiencing an accidental overdose, even without abusing the substance. An overdose occurs when the body can no longer tolerate the use of a toxic substance.

Here are a few precautions to take to reduce the risk of overdose when using opioids procured on the black market:

  • Avoid using drugs when you are alone.
  • Avoid using drugs all at the same time when in a group.
  • Use supervised injection services.
  • Have naloxone close at hand:

Drug Use and Contamination with Opioids

Some drugs might be mixed or cut with opioids. If you use drugs, it is important to remain vigilant even if you are not using an opioid:

  • Avoid mixing drugs if you don’t know what is in your substances: the risk of an overdose is especially high with other depressants (such as alcohol and GHB);
  • Find out about your medications: they might interact badly with opioids or with some synthetic substances (such as ecstasy and amphetamines);
  • At festivals, contact the festival organizers to find out if there is a harm reduction tent. In these tents, trained staff will answer your questions and give you fentanyl test strips and naloxone kits. If need be, make sure you find out where the medical tent is and, in the event of an overdose, don’t hesitate to ask for help.

Opioid Overdose

A person might be experiencing an opioid overdose if, after knowingly or unknowingly consuming the substance, they show the following signs and symptoms:

  • They do not react to sound.
  • They do not react to pain when you pinch them, for example, or stroke their skin at the sternum.
  • They have laboured or snore-like breathing, or they are not breathing.

If a person is experiencing an overdose, you must take action quickly.

Risk factors

Some people are more likely to overdose on opioids. This includes people who:

  • Have received recent medical care for opioid intoxication/overdose
  • Use heroin or non-medical opioids
  • Receive high doses of prescription opioids
  • Are on methadone treatment
  • Have experienced opioid addiction
  • Have been addicted to opioids and are leaving a period of mandatory abstinence (hospitalization, prison release, etc.) or a detoxification program
  • Consume opioids and are dealing with another serious medical condition
  • Consume opioids at the same time as other drugs, alcohol or benzodiazepines

Rescuing a person who is overdosing on opioids

An overdose is a medical emergency. If you suspect that someone is overdosing, you must act quickly. For information on how to proceed, see Rescuing a person from a possible opioid overdose.

Opioid Dependence (Addiction)

The more a person uses opioids, the more likely they are to become dependent on these substances. Regular use causes a person to develop a tolerance, and they may want to use often and increase their doses to feel the same effects as the first time. Long-term use can cause physical and psychological dependence.

Dependence treatment

Treatment for opioid dependence usually includes a combination of pharmacological treatment (buprenorphine or methadone) and psychosocial support.

Treatment of opioid dependence:

  • Prevents the onset of withdrawal symptoms
  • Decreases the persistent need to use
  • Reduces the effect of opioids, without producing euphoria

Finding a Resource

For more information on opioids and for resources that provide access to treatment for opioid dependence, contact:

Useful Link

Last update: January 29, 2019


The information on this website by no means replaces the advice of a health professional. If you have questions regarding your health, contact Info-Santé 811 or see a health professional.