Anxiety caused by substances or medicines

What it is

Some substances create anxiety directly. When marked anxiety or panic attacks begin during or shortly after use of a substance, during withdrawal from it, or after starting a medication capable of producing those symptoms, the diagnosis is substance/medication-induced anxiety disorder.

The everyday examples matter most. Heavy caffeine produces restlessness, palpitations and panic-like episodes. Khat chewing commonly brings wired, anxious, sleepless states. Cannabis triggers anxiety and panic in a sizeable minority of users. Alcohol calms in the evening and repays with rebound anxiety the next day; in regular heavy drinkers, morning anxiety is often early withdrawal. Among prescribed medicines, salbutamol inhalers, corticosteroids, thyroid hormones and some stimulants can all raise anxiety in some people.

Why the distinction matters

Because the treatment is different. Therapy and SSRIs aimed at an anxiety disorder will underperform if three strong coffees, daily khat or nightly alcohol are stoking the fire. A clinician will take a careful substance and medication history precisely for this reason, and honest answers change the plan: reduce or stop the trigger, manage withdrawal safely where needed (alcohol and sedative withdrawal can be medically serious and deserve supervision), and reassess. Anxiety that persists well after the substance is gone is then treated as its own condition.

If a prescribed medicine seems to be the trigger, do not stop it on your own; raise it with the prescriber, who can adjust the dose or switch.

Substance-induced anxiety in the African context

The everyday triggers here are common and easily missed: heavy tea and coffee, khat, which often brings wired, sleepless, anxious states, cannabis, which triggers anxiety in a sizeable minority, and alcohol, whose calm in the evening is repaid with rebound anxiety the next day. Inhalers, steroids, and thyroid medicines can also raise anxiety in some people. Because these are part of daily life, anxiety driven by them is often treated as an anxiety disorder while the trigger continues. Honest disclosure lets a clinician find and address the real cause. See also our cannabis, stimulant, and alcohol guides.

What helps

The key is to find and reduce the trigger.

• Cut back on caffeine, khat, and other stimulants, and review alcohol use, since these commonly drive anxiety.
• If a prescribed medicine seems responsible, raise it with the prescriber rather than stopping it yourself.
• Where stopping a substance brings shakes, sweating, or severe anxiety, especially with alcohol or sedatives, this needs medical supervision, not willpower.
• If anxiety persists well after the substance is gone, it is then treated as an anxiety condition in its own right.
• Be honest with your clinician about what you use, since it changes the plan.