Xanax vs Klonopin Withdrawal: Timelines Compared

Creator: Joseph
Published: 2026-10-29T18:29:57+00:00

Published by Joseph, EditorCompiled from cited sources · not yet medically reviewedUpdated Oct 29, 20266 sources

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For information only, not medical advice. Talk to a doctor before stopping or changing any medication. Medical disclaimer

⚠ Medical warning

Stopping benzodiazepines suddenly can be life-threatening. Never stop or cut your dose quickly on your own, and never switch from one benzo to another without your prescriber. Talk to your prescriber about a slow, personal taper plan. Call 911 for a seizure, confusion or hallucinations.

Quick answer

Both are benzodiazepines, and stopping either one suddenly can cause life-threatening withdrawal, including seizures. The main difference is speed. Xanax (alprazolam) has a half-life of about 11 hours (range about 6 to 27), so symptoms can start within a day and some people feel anxiety between doses. Klonopin (clonazepam) usually has a half-life of 30 to 40 hours, so withdrawal tends to start later, often a few days after stopping or reducing. With either drug, some people have protracted symptoms lasting weeks to more than 12 months.

Xanax vs Klonopin withdrawal at a glance

	Xanax (alprazolam)	Klonopin (clonazepam)
Type	Shorter-acting benzodiazepine	Long-acting benzodiazepine
Half-life (FDA label)	About 11 hours on average (about 6 to 27)	Usually 30 to 40 hours
When symptoms may start	Between doses, or within about a day of a missed dose or reduction	Often a few days after stopping or reducing (timing varies)
Acute withdrawal	First days to weeks	Days to weeks
Common symptoms	Rebound anxiety, panic, insomnia, tremor, muscle pain, fast heart rate, light sensitivity, memory problems	Rising anxiety, panic, insomnia, tremor, muscle pain, fast heart rate, light sensitivity, memory problems
Can it be dangerous?	Yes: seizures and other life-threatening reactions if stopped suddenly	Yes: seizures and other life-threatening reactions if stopped suddenly
Protracted symptoms	Some people: beyond 4 to 6 weeks, can last more than 12 months	Some people: beyond 4 to 6 weeks, can last more than 12 months
Full timeline	Xanax withdrawal timeline	Klonopin withdrawal timeline

Why the timing is different

How fast a benzodiazepine leaves your body shapes when withdrawal starts. NHS Scotland’s prescribing guidance says symptoms may begin within a day of stopping a short-acting benzo, but at any time up to 3 weeks after stopping a long-acting one. Xanax is cleared much faster than Klonopin, so its withdrawal tends to start sooner and can feel more abrupt. Klonopin’s slower clearance means a later start, but that does not make it safe to stop suddenly: the FDA label warns that abrupt discontinuation of clonazepam can also be life-threatening.

A later start can also be misleading. Because Klonopin symptoms may not appear for a few days, people sometimes assume they have “got away with” stopping, then feel much worse later. Tell your prescriber about any new symptoms after a dose change, even if they show up days later.

What they have in common

Both carry an FDA boxed warning about dependence and withdrawal reactions, including seizures, when stopped suddenly or reduced too quickly.
Both can cause protracted withdrawal in some people, with anxiety, insomnia, cognitive problems, tingling skin and ringing in the ears lasting months.
For both, guidelines recommend a gradual taper planned with a prescriber, adjusted to how you feel. We do not publish taper schedules, because a safe plan depends on your dose, how long you have taken it and your health.

When to see a doctor

Talk to your prescriber before you stop or change the dose of either medicine. Call 911 for a seizure, confusion, or seeing or hearing things that are not there. If you have thoughts of suicide or self-harm, call or text 988 now. For free, confidential treatment referrals, call SAMHSA at 1-800-662-4357 (24/7).

Tools for either timeline: Withdrawal calculator · My quit tracker · Printable symptom log. They show general timelines only, never a personal forecast or a taper plan.

FAQ

Is Klonopin withdrawal milder than Xanax withdrawal?

Not necessarily. Klonopin withdrawal usually starts later, but it can be just as serious, and both can be life-threatening if stopped suddenly. How hard withdrawal is depends on the dose, how long you have taken it, how fast it is reduced and your own health.

Why do some people feel anxious between Xanax doses?

Because alprazolam is cleared fairly quickly, levels can drop between doses, and some people notice rebound anxiety, for example early in the morning. Tell your prescriber if this happens; do not change your dose on your own.

Can I switch from Xanax to Klonopin to make stopping easier?

Some prescribers do switch people to a longer-acting benzodiazepine as part of a taper, but that is a medical decision that has to be planned and supervised. Never swap or combine benzodiazepines on your own.

Next steps

Talk to others going through it. Share your experience or ask questions on the Benzodiazepines board in our community forum. Planning to stop? See the Tapering & Talking to Your Doctor board, and talk to a doctor before you stop. Forum posts are personal experiences, not medical advice. Please read the community guidelines.

Sources

Last reviewed: October 29, 2026. Researched and written by Withdrawal Timelines from the cited sources, which are the same sources used in our individual timelines. This comparison has not yet been reviewed by a medical professional. See How We Review and our Medical Disclaimer. This is general information, not medical advice.

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