[PDF] L-théanine Dans le traitement d'appoint du trouble d'anxiété généralisée: un essai en double aveugle, randomisé et contrôlé par placebo.|Chercheur sémantique (2024)

FAQs

Does L-theanine work for anxiety? ›

Expert Insight. “L-Theanine reduces anxiety, stress, and insomnia in people dealing with stressful life events.” L-theanine is a compound known for its calming effect on the mind. In studies, it significantly reduced stress levels, making it a popular option today for people seeking natural remedies for anxiety.

The recommended daily intake of l-theanine for anxiety is about 200 to 400 mg daily. Ensure you take the dosage as advised by your doctor, as a higher dosage of over 1200 mg can lead to severe side effects. L-theanine can be combined with other substances to improve its effects on anxiety.

L-theanine has been historically reported as a relaxing agent, prompting scientific research on its pharmacology. Animal neurochemistry studies suggest that L-theanine increases brain serotonin, dopamine, GABA levels and has micromolar affinities for AMPA, Kainate and NMDA receptors.

Interactions between your drugs

No interactions were found between l-theanine and Prozac.

There is limited research on the direct impact of L-theanine on kidney function. However, no significant adverse effects on the kidneys have been reported. If you have concerns about kidney health or are taking medications that impact kidney function, consult with your healthcare provider before using L-theanine.

After taking advice from experts, the FDA classified L-theanine as “generally recognized as safe.” This classification means that they believe this additive to be safe when people use it as the packaging suggests. However, women who are pregnant or breastfeeding should not use L-theanine.

L-theanine can be taken at any time of day, including in the morning to help support healthy stress response and at night before bed to promote restful sleep.

Anytime is fine, and it's a good idea to try it and see how it makes you feel before settling on a regular supplement-popping time. For instance, if L-theanine produces a relaxing vibe for you, taking it before bed might be a smart move.

Research shows that L-theanine supplements can elevate your levels of GABA, dopamine and serotonin, which promotes relaxation and reduces anxiety levels. A randomized trial from 2019 found that healthy adults who took L-theanine over the course of four weeks had a decrease in stress-related symptoms.

People use L-theanine to improve mental function. It is also used for anxiety, mental impairment, stress, and other conditions, but there is no good scientific evidence to support these uses.

Is L-theanine safe long term? ›

While it is useful for occasional use, it is also helpful for more long term treatment. Is it safe? L- theanine in recommended dosages is safe. It may cause drowsiness due to its relaxation properties, but it is not habit forming like some prescription medications for anxiety.

Interactions. If you take any medicines regularly, talk to your doctor before you start using theanine supplements. They could interact with stimulants, sedatives, and drugs for high blood pressure.

L-theanine is a fast-acting amino acid. You should feel the effects within 30 minutes to 1 hour after taking it. The effects of L-theanine can last up to 8 hours. Any side effects should show up within this period.

Ask your doctor about the risks of taking St. John's wort, garcinia cambogia, L-tryptophan (or 5-HTP) and SAMe (S-adenosyl-methionine) supplements with your antidepressant. Consumer Labs says they can increase your risk of experiencing serotonin syndrome.

The recommended dosage for anxiety and relaxation is 200mg at night around bedtime. While it is useful for occasional use, it is also helpful for more long term treatment. Is it safe? L- theanine in recommended dosages is safe.

Stress: Theanine at doses as low as 50 mg increased relaxation. 38 For adults, 200 to 400 mg daily L-theanine for up to eight weeks. 5 For young adults, 200 mg of L-theanine were tested. 11.

When taken by mouth: L-theanine is possibly safe when used short-term. Doses of up to 900 mg daily have been safely used for 8 weeks. It isn't clear if L-theanine is safe to use for longer periods of time. It might cause mild side effects, such as headache or sleepiness.