L-Theanine for Stress: What Works First and Where It Fits

The National Institute of Mental Health guide to caring for your mental health names the moves. Get regular exercise. Just thirty minutes of walking a day can lift your mood. Eat regular meals and drink water.

Two items on that list read like they were written for the stress aisle. Pay attention to how caffeine and alcohol affect your mood, because for some people cutting back helps. And make sleep a priority, on a schedule, with less screen light before bed.

The rest is unglamorous and it works. Try one relaxing activity, such as breathing, muscle relaxation or meditation. Set goals, and learn to say no when the week is full. Stay connected to people who help. NIMH says to schedule these, not simply intend them.

This is the part the aisle never quotes. The NCCIH review of anxiety and complementary health approaches says there is some evidence that mindfulness and other forms of meditation, music, relaxation techniques and melatonin may help. Then it says there is not enough evidence on other approaches to draw firm conclusions.

The specifics are worth knowing. Chamomile looked promising in two NCCIH backed studies, but the work is preliminary, and a review of three trials found no meaningful drop in situational anxiety. Lavender studies had small numbers and funding problems. Kava may help, and it has been tied to severe liver damage.

Notice what tops that list. Three of the four supported items are practices, not products. That is the honest ranking, and it is the reason step two of the plan comes before step four.

L-theanine is an amino acid found in tea. That is why a cup of tea is the honest starting point, and why the caffeine table on the plan matters. The FDA guide to caffeine puts a cup of green or black tea well under a cup of coffee, which is a lever most stressed people have never pulled.

MegaFood's formula pairs theanine with eight B vitamins and lemon balm, and the label says it works to relax the mind within an hour. That is the maker's claim about the maker's product. Read it as a claim. The B vitamins are worth a sentence too. They close a shortfall if you have one. They are not a mood fix if you do not.

The ODS supplement guide supplies the last piece. The FDA does not determine whether a supplement is effective before it is sold, and seals from groups such as NSF International and US Pharmacopeia mean a product was properly made, not that it works. So buy one that prints its amount, and treat it as your own trial.