Interdose Withdrawal

Interdose withdrawal occurs when a person takes a medication regularly as prescribed, but starts experiencing withdrawal symptoms between doses as the drug levels drop in their bloodstream.¹ 

It is most common in those prescribed shorter-acting benzodiazepines, such as alprazolam (Xanax) or lorazepam (Ativan), although interdose withdrawal can occur with other fast-clearing medications and individual responses vary. For example, some patients have also reported interdose withdrawal symptoms with longer half-life benzodiazepines like Klonopin (clonazepam), Valium (diazepam), Librium (chlordiazepoxide) and Tranxene (clorazepate dipotassium).

Interdose withdrawal is especially prevalent in those who have become physically dependent and have built tolerance. The U.S. Food and Drug Administration (FDA) states that “physical dependence can occur when benzodiazepines are taken steadily for several days to weeks, even as prescribed.”² 

When a drug has a short half-life (meaning it leaves the body relatively quickly), the drug levels drop rapidly between scheduled doses.¹   For example, in benzodiazepine withdrawal, neuroadaptations that develop during regular exposure can contribute to increased central nervous system excitability as the drug concentration falls.¹ This creates a state of withdrawal before it is time to take the next pill.

Classic signs of Interdose Withdrawal

• Sudden spikes of intense anxiety or physical panic setting in a few hours before the next dose is due

• Internal shaking, tremors, or muscle tightness

• Sweating, chills, or heart palpitations

• Irritability, cognitive fog, or a feeling of sheer dread³

These symptoms may resolve, or partially resolve, when the next scheduled dose is taken. The Benzodiazepine Information Coalition (BIC) explains that interdose withdrawal can sometimes be mistaken for drug craving or addiction. However, a person who has developed physical dependence or tolerance from taking a benzodiazepine as prescribed may not be seeking a “high” at all — they may simply be trying to get relief from withdrawal symptoms.³

Because interdose withdrawal can be extremely uncomfortable, some people may find themselves taking their medication earlier than scheduled or taking an additional dose to relieve their symptoms. They may even run out of medication before their next prescription is due. To a doctor who does not recognise interdose withdrawal, this can potentially look like drug-seeking or misuse. However, the BIC points out that physical dependence is not the same thing as addiction, and that patients can become physically dependent while still taking their medication as prescribed.³

The BIC describes these patients as “looking for relief” rather than a “high.”³  This distinction is important because someone may genuinely believe that their underlying anxiety or other condition is getting worse, when some of what they are experiencing may actually be tolerance or withdrawal between doses. As the BIC explains, understanding physical dependence, tolerance and interdose withdrawal can help healthcare professionals recognise what may be happening and avoid automatically interpreting these symptoms as addiction or drug-seeking behaviour.³

How to Resolve Interdose Withdrawal

In the case of benzodiazepine interdose withdrawal, the Benzodiazepine Information Coalition (BIC) describes three possible approaches: adjusting the timing of doses, switching to a longer-acting benzodiazepine, or gradually tapering off the medication to reverse physical dependence.³

The first option is to adjust how often the medication is taken. With shorter-acting benzodiazepines such as Ativan (lorazepam) or Xanax (alprazolam), this may sometimes mean taking smaller doses more frequently to avoid large fluctuations in drug levels. The exact approach varies from person to person, depending on factors such as how quickly their body processes the medication.³

The second option is switching to a longer-acting benzodiazepine. Because longer-acting drugs remain in the body for longer, they may produce fewer fluctuations between doses. However, BIC cautions that changing medications can itself cause problems if the new drug is not tolerated or if the conversion is not done carefully. In their words, it can sometimes be a case of “dancing with the devil you know.”³ A switch should therefore be carefully planned with a prescriber, including making sure that the equivalent dose is appropriate.

The third option is gradually tapering off the benzodiazepine. This addresses the underlying physical dependence rather than simply trying to manage the symptoms between doses. The BIC notes that some people can taper relatively easily, while others experience significant or prolonged withdrawal symptoms even when they taper slowly.³

Importantly, there is no single approach that works for everyone. Any change to the dose, timing or type of benzodiazepine should be discussed with a qualified healthcare professional rather than attempted abruptly or without medical guidance.

 References

1.American Society of Addiction Medicine, American Academy of Family Physicians, American Academy of Neurology, et al. (2025). Joint clinical practice guideline on benzodiazepine tapering: Considerations when benzodiazepine risks outweigh benefits. Journal of General Internal Medicine. downloads.asam.org/sitefinity-production-blobs/docs/default-source/guidelines/benzodiazepine-tapering-2025/bzd-tapering-document---final-approved-version-for-distribution-02-28-25.pdf

2. U.S. Food and Drug Administration. (2020, September 23). FDA requiring Boxed Warning updated to improve safe use of benzodiazepine drug class. FDA Drug Safety Communication www.fda.gov/drugs/drug-safety-and-availability/fda-requiring-boxed-warning-updated-improve-safe-use-benzodiazepine-drug-class

3.Benzodiazepine Information Coalition. (n.d.). Interdose withdrawal. Benzodiazepine Information Coalition www.benzoinfo.com/interdose-withdrawal/