Uppers and Downers

In this article, we take a closer look at different drug groups and their effects on the body.

Read the full article below.

What are uppers and downers?

‘Uppers’ and ‘downers’ are informal terms used to describe two broad categories of drugs that have opposite effects on the brain and body.

Uppers, also known as stimulant drugs, increase activity in the central nervous system (CNS). They are known for boosting energy, increasing alertness, elevating mood, and raising heart rate and blood pressure. Examples of stimulant drugs include caffeine, cocaine, amphetamines and methamphetamine.

Downers or CNS depressants, slow down brain activity, causing the user to feel relaxed or sedate. Examples of depressants include alcohol, benzodiazepines, marijuana or opioids.

In short, uppers stimulate the body, while downers depress its functions. Both types can have legitimate medical uses but also carry serious risks if abused.

What is the difference between depressants and stimulants?

The key difference between depressants and stimulants lies in how they affect the central nervous system (CNS) and, by extension, the body and mind.

Stimulants (uppers) speed up CNS activity. This leads to increased levels of alertness, energy, and focus. People who take stimulant drugs may experience a surge in motivation, elevated mood, and enhanced physical or mental performance. However, they can also experience side effects such as insomnia, anxiety, irregular heartbeat, and elevated blood pressure, especially when taken in high doses.

Some stimulants are medically prescribed, particularly to treat attention deficit hyperactivity disorder (ADHD), while others are taken illicitly for their euphoric effects.

In contrast, depressants (downers) slow down the CNS. This produces a calming effect, making them useful for treating anxiety, panic disorders, and sleep disturbances.

Depressants reduce brain activity and can cause drowsiness, slowed breathing, and a relaxed state. However, their misuse can lead to dependence, overdose, and in severe cases, life-threatening respiratory failure.

How do uppers (stimulants) affect the central nervous system?

Stimulant drugs work by increasing the activity of certain chemicals, or neurotransmitters, in the central nervous system (CNS) – particularly dopamine and norepinephrine. These chemicals play key roles in attention, motivation, pleasure, and the body’s fight-or-flight response.

When a person takes a stimulant drug, this speeds up the transmission of signals in the brain and spinal cord.

This can lead to:

• Increased alertness
• Enhanced concentration and focus
• Elevated heart rate and blood pressure
• Increased energy levels
• Suppressed appetite
• Elevated mood or euphoria

When prescribed (e.g. to treat ADHD), stimulants can help with concentration. However, when taken illicitly in high doses – without medical supervision – the effects can become dangerous, triggering irregular heartbeat, heightened anxiety, paranoia, and even psychosis.

Over time, regular stimulant use can alter how the brain processes reward and pleasure, increasing the risk of substance abuse and addiction.

Because they directly affect the CNS, stimulants can also interact with other substances, further complicating their impact on mental and physical health.

What are the effects of stimulants?

The effects of stimulants can vary depending on the type of drug, the quantity taken, the method of ingestion (e.g. swallowed, snorted), a person’s age, weight and metabolism, whether they are taking any other drugs, and whether the drug has been prescribed or is being abused recreationally.

Short-term effects of stimulant use can include:

• Increased alertness and energy
• Elevated mood or euphoria
• Faster heart rate
• Increased blood pressure
• Dilated pupils
• Reduced appetite
• Improved focus and mental clarity (especially in people with ADHD)
• Insomnia and restlessness

The long-term effects of stimulant misuse can include:

• Dependence and addiction
• Chronic sleep issues
• Malnutrition
• Mental health conditions such as depression or anxiety
• Increased risk of heart attack or stroke
• Tremors or muscle twitches
• Impaired thermoregulation – where the body is unable to regulate its own temperature
• Aggressive or erratic behavior
• Psychosis (in extreme cases)

In cases of substance abuse, users can build up a tolerance, requiring higher doses to feel the same effects – which increases the risk of overdose or other life-threatening complications.

Even prescription stimulants, such as those used to treat ADHD, can be harmful if not taken under proper medical guidance.

What are common examples of uppers/upper drugs?

Uppers, also known as stimulants, include a range of substances that increase activity in the central nervous system (CNS). Some are legally prescribed for medical conditions, such as ADHD or narcolepsy, while others are used recreationally and carry a high risk of substance misuse.

Prescription stimulants (typically used to treat ADHD or narcolepsy)

• Methylphenidate (e.g. Ritalin, Concerta)
• Lisdexamfetamine (e.g. Vyvanse)
• Mixed amphetamine salts (e.g. Adderall)
• Dextroamphetamine (e.g. Dexedrine)

These medications are classified as Schedule II controlled substances under the Controlled Substances Act due to their potential for misuse.

Illicit stimulants

• Cocaine
• MDMA (ecstasy)
• Methamphetamine (crystal meth)

Legal stimulants

• Caffeine – found in coffee, tea, energy drinks, and some medications
• Nicotine – found in cigarettes, vaping products, and tobacco

What are the signs and symptoms of stimulant use?

Recognizing the signs and symptoms of stimulant use can help identify whether someone may be misusing these drugs – whether legally prescribed or obtained illicitly. While some symptoms might be subtle, others can be more pronounced, especially in cases of substance abuse or overdose.

Physical signs may include:

• Dilated pupils
• Increased heart rate and blood pressure
• Rapid breathing
• Sweating or flushed skin
• Loss of appetite and weight loss
• Tremors or twitching
• Dry mouth

Behavioral and psychological signs may include:

• Hyperactivity or restlessness
• Excessive talking or excitement
• Increased alertness and energy
• Anxiety or panic
• Insomnia
• Aggression or irritability
• Paranoia or hallucinations (high doses or prolonged use)

Signs of stimulant overdose or serious misuse include:

• Chest pain
• Confusion or disorientation
• Severe agitation or aggression
• Seizures
• Loss of consciousness
• Life-threatening complications like heart attack or stroke

Although many of these symptoms may be absent when stimulants are taken correctly as prescribed, stimulant misuse (high doses/non-medical use) significantly increases the risk of harmful effects.

Are stimulants used to treat ADHD?

Stimulant medications are the most commonly prescribed treatment for Attention Deficit Hyperactivity Disorder (ADHD).

These medications work by increasing levels of dopamine and norepinephrine in the brain, which help to improve focus, reduce impulsivity, and manage hyperactive behavior.

Stimulants are typically prescribed by pediatricians, primary care providers or psychiatrists, and treatment often forms part of a comprehensive care plan. This can also include behavioral therapy, school-based interventions and counseling.

Common stimulants prescribed to treat ADHD include methylphenidate-based medications (e.g. Ritalin, Concerta, Metadate, Daytrana), amphetamine-based medications (e.g. Adderall, Vyvanse, Dexedrine). These medications are classified as Schedule II controlled substances under the Controlled Substances Act due to their potential for misuse and dependence.

More information can be found at:

• CDC – ADHD Overview: https://www.cdc.gov/adhd/
• CHADD (Children and Adults with ADHD): https://chadd.org

Who should not take stimulant drugs?

Stimulants (uppers) should generally be avoided by people who:

• Have a history of heart problems such as irregular heartbeats, high blood pressure, or previous heart attacks
• Suffer from severe anxiety, panic disorders or bipolar disorder, as stimulants can worsen these conditions
• Have a history of substance misuse or addiction
• Suffer from sleep disorders such as insomnia
• Are taking medications that could dangerously interact with stimulants (e.g. certain antidepressants)
• Are pregnant or breastfeeding – stimulant use is generally not recommended unless explicitly advised by a medical professional

How do downers (depressant drugs) affect the central nervous system?

‘Downers’ or depressant drugs are substances that slow down activity in the central nervous system (CNS), causing a calming or sedative effect. They are commonly prescribed for conditions such as anxiety, sleep disorders and muscle spasms.

Depressants work by increasing the activity of a neurotransmitter called gamma-aminobutyric acid (GABA), which inhibits brain activity, promoting relaxation and reducing overactivity in the nervous system.

Common side-effects of downers include:

• Slower heart rate and breathing
• Reduced blood pressure
• A feeling of drowsiness or sedation
• Poor coordination and slowed reactions
• Confusion or memory problems (especially in high doses)

When used correctly under medical supervision, CNS depressants such as benzodiazepines or certain hypnotics can be effective for short-term relief. However, long-term use or misuse increases the risk of:

• Tolerance (needing more to feel the same effect)
• Dependence
• Withdrawal symptoms when stopping
• Life-threatening respiratory depression

Many depressant medications in the US are classified as Schedule IV or Schedule II controlled substances under the Controlled Substances Act, meaning they must be prescribed and dispensed under strict medical supervision due to their potential for misuse, dependence, and addiction.

What are common examples of downers/downer drugs?

Downers, or central nervous system (CNS) depressants, are substances that slow down brain and body activity, producing calming, sedative, or sleep-inducing effects. Some are legally prescribed for conditions such as anxiety, insomnia, or muscle spasms, while others are misused recreationally or obtained illegally.

Many of these drugs are classified as controlled substances by the Drug Enforcement Administration (DEA) due to their potential for misuse, dependence, and addiction.

Prescription medications

• Benzodiazepines – used short-term for anxiety, panic disorders or insomnia: 
  • Diazepam (Valium)
  • Lorazepam (Ativan)
  • Temazepam (Restoril)

• Non-benzodiazepine hypnotics (often referred to as “Z-drugs”) – used for short-term treatment of sleep disorders
  • Zolpidem (Ambien)
  • Zaleplon (Sonata)
  • Eszopiclone (Lunesta)

• Muscle relaxers – used to relieve muscle spasms or related conditions
  • Baclofen
  • Methocarbamol (Robaxin)
  • Carisoprodol (Soma)

Illicit or recreational depressants

• Alcohol – a widely used and more socially acceptable CNS depressant
• Gamma-hydroxybutyrate (GHB) – sometimes referred to as the ‘date rape drug’; can cause euphoria, sedation, and unconsciousness in high doses
• Opioids – opioids like heroin or prescription painkillers have strong CNS depressant effects and are often misused alongside other downers

Over-the-counter (OTC) sedatives

Some OTC medications – particularly antihistamines like diphenhydramine (Benadryl) or doxylamine – have sedative effects that are commonly used in sleep aids and cold remedies.

While these drugs are generally safe when used as directed, they can pose serious risks when misused, taken in high doses, or combined with other depressants such as alcohol, prescription medications, or opioids.

If you’re concerned about your own or someone else’s drug use, confidential support is available through your primary care provider, local mental health and addiction treatment center, or services such as SAMHSA’s National Helpline or Partnership to End Addiction.

What are the signs and symptoms of depressant use?

The signs and symptoms of depressant drugs or downers can range from mild sedation to dangerous levels of respiratory depression, depending on the drug and dosage.

Physical signs may include:

• Drowsiness or excessive sleepiness
• Slurred speech
• Poor coordination or unsteady movements
• Slow breathing or heart rate
• Dry mouth
• Drooping eyelids or lethargic appearance

Behavioral and psychological signs may include:

• Lack of motivation or slowed thinking
• Confusion or memory lapses
• Depressed mood
• Difficulty concentrating
• Irritability or emotional withdrawal
• Neglect of responsibilities

Signs of depressant overdose or serious misuse include:

• Shallow or dangerously slow breathing
• Loss of consciousness
• Cold or bluish skin (especially lips or fingertips)
• Unresponsiveness
• Seizures
• Coma or death (particularly when combined with alcohol or opioids)

Can mixing uppers and downers be dangerous?

Yes, mixing uppers (stimulants) and downers (depressants) can be extremely dangerous.

People sometimes combine these substances – intentionally or unintentionally – to “balance out” the effects of one drug with the other.

For example, someone might use cocaine (a stimulant) to stay awake while drinking alcohol (a depressant) or take benzodiazepines to come down from an MDMA high. However, this combination puts immense strain on the body and significantly increases the risk of serious health complications.

Some of the dangers of mixing uppers and downers include:

• Masking effects
  One drug can hide the signs of overdose from the other, leading people to take more than is safe. For example, stimulants may mask the sedative effects of alcohol, leading to alcohol poisoning without the usual warning signs.

• Increased risk of overdose
  Because the body is receiving mixed signals (e.g. being stimulated and sedated at the same time), it becomes harder to regulate basic functions like breathing, heart rate, and temperature – which can be life-threatening.

• Strain on the heart
  The opposing effects can place extra stress on the cardiovascular system, increasing the risk of heart attack, stroke, and irregular heartbeats, particularly when high doses are involved.

• Unpredictable psychological effects
  The combination of a stimulant’s euphoria and a depressant’s numbing effect can cause confusion, agitation, paranoia, or even psychotic episodes.

Common and risky combinations of uppers and downers include:

• Alcohol and cocaine

This combination produces a third toxic substance in the liver called cocaethylene, which is more harmful than either drug alone.

• Stimulants and benzodiazepines

Combining stimulants and benzodiazepines or ‘benzos’ can increase the risk of accidental overdose, especially if the sedative effects kick in after the stimulant wears off.

• Alcohol and opioids or GHB

This combination can cause respiratory depression and death.

If you are concerned about someone’s poly drug use (using different drugs together) or want support, you can speak with your primary care provider or contact local or national support services for confidential advice and treatment options.

Helpful resources:

• SAMHSA’s National Helpline – 1-800-662-HELP (4357)
  Free, 24/7 confidential support and referrals for substance use treatment.
• 988 Suicide & Crisis Lifeline – Dial 988
  Immediate help for mental health or substance use crises.
• Partnership to End Addiction
  Support and resources for individuals and families affected by drug use.

How is addiction to uppers or downers treated?

Substance abuse involving stimulants (uppers) or depressants (downers) can lead to serious physical and mental health consequences, including addiction, overdose, and long-term damage to the brain and body. However, effective treatment options are widely available across the US.

Treatment typically begins with a comprehensive assessment by a healthcare provider or addiction specialist. From there, a tailored treatment plan may include:

• Detoxification, particularly if the person is physically dependent on substances such as benzodiazepines, opioids, or alcohol
• Counseling or behavioral therapies, such as Cognitive Behavioral Therapy (CBT), to address the root causes of substance use
• Peer support programs like 12-step groups, SMART Recovery, or other community-based services
• Dual diagnosis treatment for co-occurring mental health conditions like ADHD, anxiety, or depression

You can access help through your primary care provider, local mental health center or addiction treatment clinic, and national support services including SAMHSA’s National Helpline and 988 Suicide & Crisis Lifeline.