November 2025

Why do I feel weird after taking L-theanine? While L-theanine is often used to alleviate anxiety, it can increase feelings of anxiety in some people. This is extremely rare but is most likely caused by the changes the L-theanine has on how the brain deals with serotonin and GABA. Before taking L-theanine supplements, talk with […]

Do L-theanine and caffeine actually work? The combination of coffee and L-theanine is a proven way to enhance alertness while reducing the “jitteriness” some people get from high doses of caffeine. Multiple studies show that together they can boost focus, attention, and reduce distractibility during cognitively demanding tasks. You may take L-theanine at any time

Should I take caffeine with L-theanine? Combining L-theanine with caffeine may reduce some negative effects of caffeine, such as increased blood pressure and sleep disruption, and potentially enhance cognitive functions like attention. Studies suggest that L-theanine primarily promotes relaxation to encourage sleep.You may take L-theanine at any time of day. Taking L-theanine in the morning

Can you take L-theanine and caffeine together? The combination of coffee and L-theanine is a proven way to enhance alertness while reducing the “jitteriness” some people get from high doses of caffeine. Multiple studies show that together they can boost focus, attention, and reduce distractibility during cognitively demanding tasks. Theanine is an amino acid extracted

Does L-theanine actually help with ADHD? Promotes Alpha Brain Waves: L-theanine increases the production of alpha brain waves, which are associated with a state of relaxed alertness. This state can help improve focus and concentration while reducing anxiety and hyperactivity, making it easier for individuals with ADHD to stay on task. L-theanine has been historically

Can you take L-theanine and ADHD meds? Complementary to Medication: For those already using ADHD medication, L-theanine can be a complementary supplement. It may help mitigate some of the side effects of stimulant medications, such as anxiety or jitteriness, while supporting overall focus and calm. Taking L-Theanine for Anxiety Reduced anxiety: A review of nine

Is it better to take L-theanine in the morning or at night for ADHD? Incorporate It into a Daily Routine: L-theanine can be taken daily, either in the morning to promote focus throughout the day or in the evening to support relaxation and better sleep. Consistency is key to experiencing the full benefits of the

What is high functioning anxiety? High-functioning anxiety is a subset of generalized anxiety disorder that often goes unnoticed or undiagnosed. It occurs when a person has anxiety symptoms, but rather than retreating from situations or interactions, they work hard to face their fears and are skilled at covering up symptoms. H (hormones): Thyroid problems are

Does L-theanine affect appetite? As higher inclusion of L-theanine may lower blood pressure, appetite loss, difficulty concentrating, dizziness, diarrhea, headaches, nausea, and gastrointestinal discomfort (Haskell et al. Giesbrecht et al. Yoto et al. L-theanine is what’s known as an anxiolytic—it works to reduce anxiety. Some anxiolytics, such as valerian and hops, have sedative effects. L-theanine,

What happens if you take L-theanine daily? 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