Several types of drugs can calm you down, ranging from fast-acting prescription medications that work within minutes to daily pills and supplements that reduce anxiety over weeks. The right option depends on whether you need immediate relief from a panic attack, help managing physical symptoms like a racing heart, or a long-term solution for ongoing anxiety.
Fast-Acting Prescription Options
Benzodiazepines are the most well-known class of drugs for rapid calming. They work by amplifying the effect of your brain’s main “slow down” chemical, GABA, which makes nerve cells less likely to fire. The result is noticeable sedation and anxiety relief within minutes. Diazepam (Valium) kicks in the fastest, in under 15 minutes. Alprazolam (Xanax), lorazepam (Ativan), and clonazepam (Klonopin) typically take 15 to 30 minutes.
The tradeoff is significant. Benzodiazepines are habit-forming, carry a risk of misuse and overdose, and can make you too drowsy to drive or operate machinery safely. Most prescribers reserve them for short-term or as-needed use rather than daily long-term treatment. If you stop taking them after regular use, withdrawal symptoms can be serious, so tapering under medical supervision is necessary.
Hydroxyzine: A Non-Addictive Alternative
Hydroxyzine (sold as Vistaril or Atarax) is an antihistamine that also has calming effects on the brain. It’s not addictive, which makes it a common choice when prescribers want to avoid the risks of benzodiazepines. It’s often used before surgeries to ease nerves and promote sleep. The main downside is drowsiness and decreased alertness, similar to what you’d feel from a strong allergy pill.
Beta-Blockers for Physical Symptoms
If your anxiety shows up mostly as physical symptoms, a racing heartbeat, shaky hands, sweating, or a trembling voice, beta-blockers like propranolol can help. These drugs block the adrenaline response in your body, slowing your heart rate and lowering your blood pressure. They don’t do much for the mental side of anxiety (the racing thoughts or sense of dread), but they’re effective at stopping the physical spiral that often makes anxiety worse.
Propranolol is commonly used off-label for performance anxiety and situational stress, like public speaking or job interviews. Because it acts on your heart and blood vessels rather than your brain chemistry, it doesn’t cause the drowsiness or addiction risk associated with benzodiazepines. It can affect heart function, though, so it’s not appropriate for everyone.
Daily Medications for Ongoing Anxiety
If anxiety is something you deal with most days rather than in isolated moments, a daily medication that gradually adjusts your brain chemistry is typically more appropriate than something fast-acting.
SSRIs (selective serotonin reuptake inhibitors) are the most commonly prescribed drugs for generalized anxiety. They work by increasing the availability of serotonin in your brain, which helps regulate mood and emotional responses over time. They start working within one to four weeks, with full benefits taking up to 12 weeks. That delay can be frustrating, but these medications treat the underlying pattern rather than just masking symptoms in the moment.
SNRIs (serotonin and norepinephrine reuptake inhibitors) work similarly but also target norepinephrine, another brain chemical involved in the stress response. They typically take six to eight weeks before you feel meaningful relief. Both SSRIs and SNRIs are considered first-line treatments for anxiety disorders because they’re effective long-term and not habit-forming.
Buspirone is another daily option specifically designed for anxiety. It works differently from both benzodiazepines and SSRIs, likely by influencing serotonin activity in specific parts of the brain. It takes one to two weeks before you start feeling its effects. Like SSRIs, it’s not addictive and doesn’t cause the sedation that benzodiazepines do, which makes it a good fit for people who need to stay alert during the day.
Supplements That May Help
If you’re looking for something available without a prescription, a few supplements have some clinical backing, though none are as potent as prescription medications.
L-theanine, an amino acid found naturally in tea, has shown anxiolytic (anxiety-reducing) and stress-relieving effects at daily doses of 200 to 400 mg. Studies have found that 200 mg can lower blood pressure in people with high stress responses and may improve sleep quality by reducing anxiety rather than by sedating you directly. It’s generally considered safe for up to eight weeks of daily use and is widely available as a standalone supplement.
Magnesium is involved in producing serotonin, and low levels have been linked to increased anxiety and depressed mood. Magnesium glycinate is the form most often marketed for relaxation, though Mayo Clinic notes that its calming benefits haven’t been conclusively proven in human studies. The recommended daily intake for adults is 310 to 420 mg depending on age and sex. Many people don’t get enough magnesium through diet alone, so supplementation may help if you’re deficient, but it’s unlikely to replace medication for clinical anxiety.
How These Options Compare
- Fastest relief: Benzodiazepines (15 to 30 minutes), but with addiction risk and heavy sedation.
- Physical symptoms only: Beta-blockers like propranolol calm your body without sedating your mind.
- Non-addictive short-term relief: Hydroxyzine calms anxiety within an hour or so, with drowsiness as the main side effect.
- Long-term daily treatment: SSRIs, SNRIs, or buspirone take weeks to work but address the root pattern of chronic anxiety.
- Mild, over-the-counter support: L-theanine and magnesium offer modest calming effects without a prescription.
Almost all calming medications cause some degree of drowsiness or slowed reaction time, which can make driving unsafe. This is especially true for benzodiazepines and antihistamines like hydroxyzine. Beta-blockers and buspirone are less sedating, and supplements like L-theanine rarely cause noticeable drowsiness at standard doses.
The best choice depends on whether your anxiety is situational or chronic, whether physical symptoms dominate, and how you weigh the tradeoffs between speed of relief and long-term safety. A prescriber can help match the right option to your specific pattern.