When people think of addiction, they often picture dependence on a single substance—alcohol, opioids, or stimulants. But for many people struggling today, the reality is more complicated.
Polysubstance use, which means using two or more substances together or within a short period of time, has become increasingly common across the United States. So, what does this mean exactly? And what are the signs?
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What is Driving the Rise in Polysubstance Use?
There’s no single reason why polysubstance use has become more prevalent. For some individuals, it starts unintentionally. The illegal drug supply has become increasingly contaminated with fentanyl, meaning someone who believes they’re using cocaine or methamphetamine may unknowingly be exposed to opioids as well. This accidental mixing has contributed to a sharp rise in overdose deaths involving multiple substances.
For others, polysubstance use is a way of self-medicating. Someone dealing with anxiety, depression, or trauma may use one substance to relax and another to feel energized or numb. Over time, the combination becomes part of a routine that feels impossible to break.

Some people also mix substances to enhance or balance their effects—using a stimulant to stay awake after drinking, for example, or taking a sedative to come down from a high. And with more substances widely available than ever before, the opportunities for mixing have only grown.
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What Are the Dangers of Mixing Substances?
When substances interact, the effects can be unpredictable. Two depressants—such as opioids and benzodiazepines, or opioids and alcohol—can dangerously slow breathing and heart rate. In fact, mixing stimulants with depressants puts enormous strain on the cardiovascular system. Even seemingly less extreme combinations can lead to confusion, impaired judgment, and accidents.
And yes, overdosing is a serious concern. Many fatal overdoses now involve more than one substance, and the presence of fentanyl in the drug supply has made this risk even greater.
When multiple substances are involved, it can also be harder for medical professionals to identify what’s causing symptoms and how to treat them effectively.
Beyond the immediate physical dangers, polysubstance use takes a toll on the liver, kidneys, heart, and brain over time. It can also make mental health symptoms worse, creating a cycle that feels harder and harder to escape.
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Signs of Polysubstance Addiction
Recognizing polysubstance addiction can be tricky, both for the person struggling and for the people who care about them. Because multiple substances are involved, the signs may vary or seem inconsistent. Here are some things to watch for:
- Needing more than one substance to feel “normal” or get through the day
- Experiencing withdrawal symptoms that shift or seem unpredictable
- Hiding the full extent of substance use from others
- Unsuccessful attempts to cut back on one or more substances
- Building tolerance across multiple substances
- Feeling unable to function without a specific combination of substances
If any of this sounds familiar, you’re not alone—and help is available.
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What Recovery Looks Like for Polysubstance Use
Recovery from polysubstance use is absolutely possible, but it requires treatment that addresses the full picture—not just one substance. A comprehensive approach starts with medically supervised detox, which helps manage withdrawal symptoms safely and comfortably.
Because withdrawal can look different when multiple substances are involved, having experienced medical support is especially important.
From there, effective treatment digs into the reasons behind substance use. Many people with polysubstance addiction are also dealing with mental health conditions, such as anxiety, depression, or PTSD. Dual diagnosis care treats addiction and mental health together, which leads to stronger, more lasting recovery.
Because everyone’s situation is different, individualized treatment plans are essential. What works for one person may not work for another, and a good treatment program will meet you where you are, with therapies and support tailored to your needs.
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Recovery is Possible
If you or someone you love is struggling with polysubstance use, you don’t have to figure this out alone, and you don't have to have all the answers before reaching out.
Freedom Recovery Centers (FRC) is here to help. Our compassionate team understands the complexities of polysubstance addiction and is committed to providing personalized, evidence-based care. We’ll walk with you every step of the way—from detox through treatment and beyond. Call us today at 804-635-3746.
