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The cocaine comedown — often called the 'crash' — begins shortly after effects fade and can last from 4 hours to several days depending on the amount consumed and individual factors. The crash is driven by dopamine depletion: cocaine floods the brain with dopamine during use, and the subsequent deficit produces fatigue, depression, irritability, and strong cravings.
The comedown follows a predictable timeline. Within 30–60 minutes of the last use, initial euphoria fades and is replaced by restlessness and agitation. Over the next 2–6 hours, fatigue and low mood set in as dopamine levels drop below baseline. The most intense crash symptoms occur 6–12 hours after the last use, featuring deep fatigue, depression, and hypersomnia.
The severity of the comedown correlates directly with the amount consumed and the duration of the session. A single moderate use may produce a mild crash lasting a few hours. A binge session lasting 6–12+ hours typically results in a severe crash lasting 1–3 days, with prominent features including inability to experience pleasure (anhedonia), excessive sleep (12–16 hours), and increased appetite.
Cocaine cravings during the comedown are intense and are the primary driver of repeated use and dependence. The brain's reward circuits have been temporarily depleted, and the memory of cocaine's dopamine surge creates powerful urges. Understanding this mechanism helps contextualize why the comedown period is a high-risk time for relapse.
Use this calculator as a starting point for any health or fitness goal that requires a numeric benchmark. The result is an estimate, not a diagnosis — but it provides a concrete figure to track against over time.
A frequent error is failing to control measurement conditions between calculations. Weight and body circumferences vary significantly throughout the day and with hydration levels. Always measure under the same conditions (same time of day, same equipment) to make comparisons meaningful.
Someone returning from a period of inactivity uses the calculator to establish a baseline health metric before starting a new training programme. Monthly recalculations with consistent measurement conditions create a trackable trend that scale weight alone cannot provide.
Mild use: 4–8 hours. Moderate session: 12–24 hours. Heavy binge: 1–3 days. The crash severity is directly proportional to the total amount consumed and session length.
Sleep, hydration, and nutrition are the foundations. There are no shortcuts to dopamine recovery. Avoid caffeine and other stimulants during the crash phase. If symptoms are severe or prolonged, consult a healthcare professional.
The comedown itself is rarely medically dangerous, but the intense cravings and depression can lead to risky behavior, including immediate reuse. The psychological distress can be severe. Seek support if you experience suicidal thoughts.
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