L-theanine (or green tea)
They say Japanese Buddhist monks could meditate for hours, both alert and relaxed. One reason may have been an amino acid in their green tea called L-theanine,
Research shows that L-theanine helps curb a rising heart rate and blood pressure, and a few small human studies have found that it reduces anxiety. In one study, anxiety-prone subjects were calmer and more focused during a test if they took 200 milligrams of L-theanine beforehand.
You can get that much L-theanine from green tea, but you'll have to drink many cups—as few as five, as many as 20.
Named after the Greek word for "honey bee," lemon balm (Melissa officinalis), has been used at least since the Middle Ages to reduce stress and anxiety, and help with sleep. In one study of healthy volunteers, those who took standardized lemon balm extracts (600 mg) were more calm and alert than those who took a placebo.
While it's generally safe, be aware that some studies have found that taking too much can actually make you more anxious. So follow directions and start with the smallest dose. Lemon balm is sold as a tea, capsule, and tincture. It's often combined with other calming herbs such as hops, chamomile, and valerian.
In spite of the name, this herb won't help you in love. It's a sedative; the German government has approved it for nervous restlessness. Some studies find that it can reduce symptoms of anxiety as effectively as prescription drugs. It's often used for insomnia.
Like other sedatives, it can cause sleepiness and drowsiness, so don't take it—or valerian, hops, kava, lemon balm, or other sedative herbs—when you are also taking a prescription sedative.
Be careful about using more than one sedative herb at a time, and don't take passionflower for longer than one month at a time.
The intoxicating (but safe) aroma of lavender (Lavandula hybrida) may be an "emotional" anti-inflammatory. In one study, Greek dental patients were less anxious if the waiting room was scented with lavender oil. In a Florida study, students who inhaled lavender oil scent before an exam has less anxiety—although some students said it made their minds "fuzzy" during the test.
Eat omega 3
You know fish oils are good for the heart, and perhaps they protect against depression. Add anxiety to the list. In one study, students who took 2.5 milligrams a day of mixed omega-3 fatty acids for 12 weeks had less anxiety before an exam than students taking placebo.
Experts generally recommend that you get your omega-3s from food whenever possible. Oily, cold-water fishes like salmon are the best sources of the fatty acids; a six-ounce piece of grilled wild salmon contains about 3.75 grams.
Other good choices: anchovies, sardines, and mussels.