Natural Factors Suntheanine L-Theanine 100 mg - Health Supplement for Calm Outlook - L-Theanine Supplement Supports Relaxing Sleep & Aids Against Drowsiness - 60 Chewable Tablets (30 Servings)

Yes it did but the brand mattered. This one works well for me: https://a.co/d/0aXxMw7m I tried a nutricost brand caffeine / l-theanine mix and it made me feel sick twice. At least I knew right away that one was bad and didn’t try to placebo my way into thinking it was working. Hopefully someone here knows an affordable one for you that works. With the suntheanine I can definitely feel the benefit. First days it was sleepy(but didn’t feel sick, felt good) and now it helps center nervousness