Withdrawal typically lasts a few days to a few weeks for most substances, though the exact timeline depends heavily on what you were using, how long you used it, and your overall health. Some substances cause symptoms that peak within days and fade quickly, while others can trigger lingering effects that stretch for months. Here’s what to expect for the most common types of withdrawal.
Alcohol Withdrawal
Alcohol withdrawal symptoms tend to start within 8 hours of your last drink, though they can sometimes appear days later. Symptoms peak between 24 and 72 hours, and the most intense physical effects generally resolve within about a week. Early symptoms include anxiety, shakiness, nausea, and insomnia. In severe cases, withdrawal can cause seizures or a dangerous condition called delirium tremens, which is why heavy drinkers are often advised to taper or withdraw under medical supervision rather than stopping abruptly.
Even after the acute phase passes, some people experience lingering anxiety, sleep disruption, and irritability for several weeks.
Opioid Withdrawal
The timeline for opioid withdrawal depends on which opioid you were using. Symptoms from short-acting opioids like heroin usually start within 12 hours of the last dose, while longer-acting opioids like methadone can take up to 30 hours before withdrawal begins. The worst of it, including muscle aches, sweating, nausea, diarrhea, and intense cravings, typically hits between days 1 and 3.
For short-acting opioids, acute symptoms generally ease within 5 to 7 days. Longer-acting opioids can stretch the acute phase to 10 days or more. The physical symptoms, while extremely uncomfortable, are rarely life-threatening for otherwise healthy adults. Low motivation, mood swings, and difficulty concentrating can persist for weeks afterward.
Benzodiazepine Withdrawal
Benzodiazepine withdrawal is one of the more unpredictable timelines. Short-acting varieties can produce symptoms within a few days of stopping, while long-acting types may not trigger withdrawal for a full week. Once symptoms begin, they can last weeks to months, making this one of the longer withdrawal processes.
This is also one of the more medically serious withdrawals. Abrupt cessation can cause seizures, severe anxiety, and cognitive fog. For this reason, a gradual taper is the standard approach. Switching to a longer-acting formulation allows for a slower, more controlled dose reduction, which significantly improves the chances of getting off the medication safely.
Nicotine Withdrawal
Nicotine withdrawal is fast-moving compared to most substances. Symptoms peak on the second or third day after quitting and then gradually fade over three to four weeks. The most common complaints are irritability, difficulty concentrating, increased appetite, and strong cravings. The physical symptoms are relatively mild, but the psychological pull of cravings can persist well beyond that initial month, which is why many people relapse in the first few weeks.
Cannabis Withdrawal
Cannabis withdrawal is real, though it’s often milder than withdrawal from alcohol or opioids. Symptoms usually begin within 24 to 48 hours of stopping heavy, long-term use and peak around day three. Most people feel back to normal within two weeks, though heavy users can experience symptoms like disrupted sleep, irritability, vivid dreams, and headaches for three weeks or longer.
Antidepressant Discontinuation
Stopping antidepressants, particularly SSRIs, can cause what’s formally called discontinuation syndrome. Symptoms emerge within days to weeks of stopping the medication or lowering the dose, typically once about 90% of the drug has cleared your system. Common effects include dizziness, “brain zaps” (brief electric-shock sensations), nausea, and mood changes.
For most people, these symptoms resolve within a few weeks as the body readjusts. If symptoms last longer than a month and are getting worse rather than better, that may signal a return of the underlying depression rather than a withdrawal effect. Tapering slowly, rather than stopping suddenly, reduces the severity of discontinuation symptoms significantly.
Why Timelines Vary So Much
Two people withdrawing from the same substance can have very different experiences. Several factors influence how long your withdrawal will last and how severe it feels:
- Duration of use: The longer you’ve been using a substance, the more your body has adapted to it, and the longer it takes to readjust.
- Dosage: Higher doses generally produce more intense and prolonged withdrawal.
- Use of multiple substances: If you’ve been using more than one drug, withdrawal can be more complex and last longer.
- Age and physical health: Younger, healthier individuals tend to recover faster.
- Method of withdrawal: A medically supervised taper is generally smoother and shorter than abrupt cessation.
When Symptoms Linger for Months
Some people experience a second, drawn-out phase of withdrawal known as post-acute withdrawal syndrome, or PAWS. This can last anywhere from a few months to two years after stopping a substance. PAWS isn’t the intense physical sickness of early withdrawal. Instead, it shows up as mood swings, sleep problems, fatigue, difficulty concentrating, and persistent cravings.
The specific pattern varies by substance. Alcohol-related PAWS tends to involve anxiety, depression, and sleep disruption. Opioid-related PAWS often features low motivation and insomnia. Benzodiazepine PAWS can include lingering cognitive fog, muscle pain, and tremors. Stimulant-related PAWS commonly presents as depression, fatigue, and poor impulse control.
PAWS symptoms typically come in waves rather than staying constant. You might feel fine for several days, then hit a rough patch that lasts a day or two before easing again. These waves tend to become less frequent and less intense over time, but the unpredictability can be discouraging if you’re not expecting it.