Miracle Rehabilitation Centre

Multiple Substance Use Disorder
(Polysubstance Use)

What it is: Multiple substance use occurs when a person uses more than one type of addictive substance at the same time or alternates between substances. For example, someone might use alcohol and cannabis, or opioids and sedatives, to enhance the effect or manage withdrawal from one drug with another. Polysubstance use is especially risky because it increases the likelihood of physical harm, severe withdrawal symptoms, emotional instability, and unpredictable behaviour.

How it affects the brain and body:

Each substance impacts the brain and body differently. When multiple substances are used together:

  • The brain becomes more dependent and dysregulated
  • Withdrawal symptoms can overlap or intensify, causing severe discomfort
  • Mood, memory, and decision-making are significantly impaired
  • Physical health risks increase, including heart, liver, kidney, and nervous system damage

What families may notice:

  • Extreme mood swings, irritability, or unusual emotional reactions
  • Confusion, agitation, or unusual behaviour
  • Changes in appetite, sleep, or daily routines
  • Secrecy, isolation, or sudden changes in friendships or social groups
  • Repeated failed attempts to quit one or more substances

Withdrawal symptoms: Withdrawal from multiple substances can include a combination of physical and emotional symptoms:

  • Shaking, sweating, nausea, vomiting, or body pain (from alcohol or opioids)
  • Anxiety, restlessness, irritability, or sleep problems (from stimulants or sedatives)
  • Cravings for one or more substances simultaneously
  • Confusion, fearfulness, or unusual thoughts/behaviour if psychotic symptoms are present

Why relapse happens: Relapse risk is very high because multiple substances reinforce dependence on each other. Triggers include stress, social pressure, emotional discomfort, exposure to substances, or fear of withdrawal symptoms.

Bio-Psycho-Social Approach to Recovery

  • Biological (Body): Safe and supervised detoxification for all substances, management of overlapping withdrawal symptoms, and support for physical health recovery.
  • Psychological (Mind): Therapy to address emotional regulation, stress coping, compulsive behaviours, and understanding triggers across multiple substances.
  • Social (Life & Relationships): Family education, building supportive routines, avoiding high-risk environments, and reintegrating safely into daily life.

At Miracle Rehabilitation Centre, polysubstance addiction is treated holistically, focusing on physical recovery, emotional stability, and social reintegration, helping individuals regain control over their life, health, and relationships.