SSRIs are the most widely recommended medications for anxiety and are typically prescribed first. These include sertraline (Zoloft), escitalopram (Lexapro), fluoxetine (Prozac), and citalopram (Celexa). But SSRIs are just one category among several, and the best choice depends on the type of anxiety you’re dealing with, how quickly you need relief, and which side effects matter most to you.
SSRIs: The Standard Starting Point
SSRIs work by increasing serotonin activity in the brain, which gradually reduces the intensity of anxious thoughts and physical tension. They’re considered first-line treatment for generalized anxiety disorder, social anxiety, and panic disorder. The most commonly prescribed options are sertraline, escitalopram, fluoxetine, and citalopram.
The biggest drawback is timing. You may notice subtle changes in the first week or two, but it takes several weeks of consistent use before the full benefit kicks in. That delay frustrates many people, especially when anxiety feels urgent. The other major trade-off is sexual side effects: all SSRIs carry a moderate-to-high risk of reduced sex drive or difficulty with arousal and orgasm. Some people report these effects lingering even after stopping the medication. Among the SSRIs, fluoxetine has no measurable weight gain risk, while paroxetine carries the highest risk of sexual side effects and more sedation than others in the class.
SNRIs: A Close Alternative
Serotonin-norepinephrine reuptake inhibitors boost both serotonin and norepinephrine, which can help when anxiety comes with fatigue, difficulty concentrating, or co-occurring pain. Duloxetine and venlafaxine are the most commonly prescribed for anxiety disorders. The FDA approved a delayed-release form of duloxetine specifically for generalized anxiety disorder.
SNRIs generally cause less sexual dysfunction than SSRIs, with one notable exception: venlafaxine carries a moderate-to-high risk comparable to most SSRIs. Stomach upset is common across the class, particularly when starting or increasing a dose. SNRIs can also raise blood pressure slightly, so periodic monitoring is typical.
Benzodiazepines: Fast but Risky
Benzodiazepines like alprazolam (Xanax), lorazepam (Ativan), clonazepam (Klonopin), and diazepam (Valium) work within minutes to calm acute anxiety. They’re the only widely available option for rapid relief during panic attacks or severe anxiety episodes. That speed makes them appealing, but it also makes them risky.
The FDA requires a boxed warning on all benzodiazepines because of dependence and withdrawal risks. Most are recommended for use over weeks or months at most, and the FDA’s guidance is clear: prescribers should limit both dosage and duration to the minimum needed. Stopping abruptly after regular use can trigger withdrawal symptoms that range from rebound anxiety to seizures. There is no one-size-fits-all tapering schedule. If you’ve been taking a benzodiazepine regularly, stopping requires a gradual, individualized reduction, sometimes pausing the taper if withdrawal symptoms emerge.
Benzodiazepines are best understood as a bridge, something to manage symptoms while a longer-term medication builds up in your system, or as occasional use for predictable high-anxiety situations. They are not a good long-term strategy for most people.
Buspirone: A Non-Sedating Option
Buspirone is specifically approved for generalized anxiety disorder and works differently from both SSRIs and benzodiazepines. It doesn’t cause sedation, has no potential for dependence, and doesn’t impair muscle coordination. The typical starting dose is 15 mg daily, gradually increased over days to a common therapeutic range of 20 to 30 mg per day.
Like SSRIs, buspirone takes weeks to reach full effect, so it won’t help with acute panic. It also doesn’t work well for people who’ve previously responded to benzodiazepines, possibly because it doesn’t produce the immediate calm they’ve come to expect. For people who want to avoid sedation and dependence risk, though, buspirone is a solid choice that tends to be well tolerated.
Beta-Blockers for Performance Anxiety
If your anxiety is situational, like public speaking, presentations, or auditions, a beta-blocker may be more useful than a daily medication. Propranolol is the most commonly used, often at doses as low as 10 to 20 mg taken before the anxiety-triggering event. It doesn’t affect your thoughts or emotions directly. Instead, it blocks the physical symptoms that feed the anxiety loop: rapid heartbeat, trembling hands, sweating, and voice shakiness. Many performers, surgeons, and public speakers use propranolol occasionally without needing daily anxiety medication.
Hydroxyzine and Other Off-Label Options
Hydroxyzine is an antihistamine that doubles as an anxiety treatment, particularly useful when sedation from benzodiazepines or dependence risk is a concern. In a large randomized trial, patients with generalized anxiety disorder taking 50 mg daily of hydroxyzine improved as much as those taking a benzodiazepine, with less sedation. It works relatively quickly compared to SSRIs and carries no addiction potential, making it a practical option for as-needed anxiety relief.
Pregabalin (Lyrica), an anticonvulsant, has also shown effectiveness for generalized anxiety. In three placebo-controlled trials, it performed as well as both alprazolam and lorazepam. It’s approved for anxiety in some countries but remains off-label in the United States. Your prescriber might consider it if standard options haven’t worked or aren’t tolerated.
How Side Effects Compare Across Classes
The side effect that matters most varies from person to person. Here’s how the main options stack up on the concerns people ask about most:
- Sexual dysfunction: Highest with SSRIs (especially paroxetine) and venlafaxine. Minimal with SNRIs like duloxetine and desvenlafaxine. Essentially absent with buspirone, hydroxyzine, and bupropion.
- Weight gain: Most SSRIs and SNRIs carry slight risk. Fluoxetine and bupropion carry none. Mirtazapine, sometimes used for anxiety with insomnia, has the highest weight gain risk of any antidepressant.
- Drowsiness: Benzodiazepines and mirtazapine are the most sedating. Most SSRIs and SNRIs cause little to no drowsiness. Buspirone and bupropion are essentially non-sedating.
- Stomach upset: Common with all SSRIs and SNRIs at the start, usually improving over time. Sertraline tends to cause more GI symptoms than escitalopram.
What to Expect When Starting
If you’re prescribed an SSRI, SNRI, or buspirone, expect a slow ramp-up. The first week or two might bring side effects (nausea, jitteriness, disrupted sleep) before any real anxiety relief appears. Full therapeutic benefit typically takes several weeks, sometimes longer. Many people give up too early, assuming the medication isn’t working when it simply hasn’t had enough time.
For children and adolescents, antidepressants carry a boxed warning about increased risk of suicidal thoughts during the first few months of treatment. FDA analysis found this risk at about 4% on medication versus 2% on placebo. This doesn’t mean these medications should be avoided in young people, but it does mean close monitoring matters, especially in the early weeks and during dose changes. Families should watch for unusual agitation, irritability, or sudden behavioral shifts.
Stopping Anxiety Medication Safely
Withdrawal is a real consideration with most anxiety medications taken daily. SSRI discontinuation syndrome can cause dizziness, nausea, and electric shock-like sensations in the brain (often called “brain zaps”). Medications with shorter half-lives, like paroxetine, tend to produce worse withdrawal symptoms that start sooner. Fluoxetine, which stays in your system longer, is generally easier to taper.
Standard guidelines suggest tapering over two to four weeks, but research suggests this is often too fast and not much better than stopping abruptly for many patients. A more gradual approach, reducing in smaller increments over a longer period, tends to work better. The key principle: never stop a daily anxiety medication cold turkey. Work with your prescriber to create a taper plan, and know that it’s normal to slow down or pause the taper if symptoms flare.