Swanson Suntheanine L-Theanine 200 mg 60 Vegan Caps 4 Pack
Swanson Suntheanine L-Theanine 200 mg 60 Vegan Caps 4 Pack
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Swanson Suntheanine L-Theanine 200 mg 60 Vegan Caps 4 Pack

4.5 stars out of 81 reviews
(4.5)|
81 ratings
Swanson Suntheanine L-Theanine 200 mg 60 Vegan Caps 4 PackSwanson Suntheanine L Theanine 200 mg 60 Vegan Caps 4 PackSwanson L Theanine Double Strength 200 mg 60 Veggie Capsules

Key item features

  • Supports balanced mental health and emotional well-being
  • Maintains a feeling of calm while remaining alert

  • Helps ease nervous tension

  • Gluten Free, Vegan, Vegetarian, Non-GMO
  • Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months.
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Customer ratings & reviews

4.5 out of 5 stars
stars81 ratings78 reviews
How item rating is calculated
  1. 5 stars78% (63)
  2. 4 stars6% (5)
  3. 3 stars7% (6)
  4. 2 stars2% (2)
  5. 1 star6% (5)
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Showing 1-3 of 78 reviews

Sep 14, 2025
Allie M
5 out of 5 stars review

Placebo or Real - I feel amazing.

Back in 2020 I used l-theanine a lot. I've been wanting to get back into supplements and knew I had to order this one. Anyways, a few days in and I take it with my coffee in the morning. Helps smoothe those jitters and helps me feel energized while also zen. Big fan so far.

Review from swansonvitamins.com
Helpful?2RI0J6L3AV841176559348
Apr 27, 2025
Melissa L
5 out of 5 stars review

Consistently Effective for Stress and Sleep Support -- non-sedating, high-quality form of theanine

I've tried several brands of l-theanine and have had the best results with this Swanson formula. It's consistent in dialing down my daily stress before bed, easing me into relaxation and sleep. I don't feel sedated or foggy upon awakening with this. I'll combine with Swanson's magnesium glycinate and standardized chamomile, which has become the perfect "bedtime cocktail" for me. This product is high-quality and competitively priced. Repeat purchaser!

Review from swansonvitamins.com
Helpful?2RI0J6L3AV841176559348
Feb 23, 2025
liza l
5 out of 5 stars review

These supplements are great to help you sleep! If you research, there's not even an adverse side effects found … yet! 😊. The 200mg dose is effective for me. I hope Swanson will continue to maintain its purity & quality - the Suntheanine in it is the reason I buy the Swanson brand! I have to wait for it ( & the rest of the supplements I take!) to be on sale tho as they are not affordable at regular price unfortunately! But ….Swanson is a brand you can trust! Been using Swanson for years!!!

Review from swansonvitamins.com
Helpful?2RI0J6L3AV841176559348