Amphetamine & Speed Addiction: Signs, Effects & How to Get Help

Speed, whizz, billy — amphetamine is a cheap, long-lasting stimulant that promises energy, focus and confidence, and quietly takes far more than it gives. It's a close cousin of cocaine, which is the territory I know best, from the inside and across the desk. If a lift to get through the day or the night has turned into something you can't do without, you're not alone and it's very workable.

What amphetamines do to you

Amphetamine floods the brain with dopamine and noradrenaline, producing energy, alertness, talkativeness and a suppressed appetite. As with cocaine, the brain depletes and adapts: tolerance climbs, the highs flatten, and the crash on the other side gets deeper each time.

Short- and long-term effects

Short term: wired energy and confidence, but also a racing heart, jaw-clenching, no appetite and no sleep — followed by an exhausted, low, irritable comedown. Long term: anxiety and paranoia, persistent low mood, wrecked sleep, weight loss, strain on the heart, and a dependence that's as much mental as physical.

Signs of amphetamine addiction

• Using it to function — to work, study, or get through the day
• Bingeing and then crashing hard
• Needing more for the same lift
• Carrying on despite the comedowns damaging your mood, sleep and relationships

Withdrawal & recovery

Coming off amphetamine is mainly psychological: heavy fatigue, low mood, big cravings, and a rebound in sleep and appetite that can last from days to a few weeks. It lifts as your dopamine system rebalances — and it lifts far faster once the cycle is broken for good.

How to get help

Amphetamine dependence responds to the same approach I use with cocaine: understand your triggers, build a plan around them, and don't try to white-knuckle it alone. This is squarely the kind of stimulant problem I help professionals with. Start with the assessment, or book a confidential chat.

Gary Clinton

Ireland's cocaine addiction specialist — CBT-qualified therapist, bestselling author of Never Give Up, and in long-term recovery himself. Private one-to-one help for professionals, online and worldwide.