L-Theanine, 100 mg, 60 vegetarian capsules
L-Theanine, 100 mg, 60 vegetarian capsules
in 3 offers
The lowest price for Life Extension - L-Theanine 100 MG - 60 Vegetarian Capsules right now is $27.38 at iHerb, compared across 3 retailers.
The all-time low was $18.00 on 22 Jan 2026 — today's price is 52% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 6 June 2026.
Life Extension - L-Theanine 100 MG - 60 Vegetarian Capsules
L-Theanine, 100 mg, 60 vegetarian capsules
L-Theanine, 100 mg, 60 vegetarian capsules
Last updated at 06/06/2026 02:18:03
Life Extension, L-Theanine, 60 Vegetarian Capsules (100 mg per Capsule)
Delivery $40
Life Extension, L-theanine, 100 Mg, 60 Vegetarian Capsules
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ltheanine 100 MG 60 Capsules LIFE EXTENSION
Delivery between Thu – Fri $67.77
originally posted on iherb.com
The 600mg dosage of L-theanine provides a noticeable relaxation without inducing drowsiness, making it an excellent addition to my stress management strategy. The capsules are easy to take, and I appreciate the natural and non-sedative way in which L-theanine promotes a balanced mental state. Since adding L-theanine to my routine, I've experienced reduced anxiety levels and improved concentration, especially during hectic times.
originally posted on iherb.com
i love the smell and the looks of it. im looking forward to purchasing another one! .Excellent! great quality product. it really works as intended. Will definitely get more soon! Thank you so much for this. it was made of high qualiy ingredients. Plus the packaging and sizes were perfect. over all good quality.
originally posted on iherb.com
This was my first time trying L-Theanine. I have tried this supplement for three days and have not felt any changes. I was hoping to feel more calm and focused upon taking this. While I’m not yet experiencing any improvements, I have 0 side effects. It’s possible the 100 mg dose isn’t enough and I may need to double my dose (for reference, Thorne’s L-Theanine is 200 mg). While I’m not sure whether this will do anything with continued use, I still give it 4 stars because LifeExtensions is a brand I trust and this supplement is well-priced for the quality. I also appreciated that the bottle is small.
| Serving Size | 1 Vegetarian Capsule |
| Servings per Container | 60 |
| Amount Per Serving | % Daily Value |
| Vitamin C (as ascorbyl palmitate) | 2 mg |
| Suntheanine (L-theanine) | 100 mg |
Life Extension, L-Theanine, 60 Vegetarian Capsules (100 mg per Capsule)
Delivery $40
Life Extension, L-theanine, 100 Mg, 60 Vegetarian Capsules
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ltheanine 100 MG 60 Capsules LIFE EXTENSION
Delivery between Thu – Fri $67.77
The 600mg dosage of L-theanine provides a noticeable relaxation without inducing drowsiness, making it an excellent addition to my stress management strategy. The capsules are easy to take, and I appreciate the natural and non-sedative way in which L-theanine promotes a balanced mental state. Since adding L-theanine to my routine, I've experienced reduced anxiety levels and improved concentration, especially during hectic times.
i love the smell and the looks of it. im looking forward to purchasing another one! .Excellent! great quality product. it really works as intended. Will definitely get more soon! Thank you so much for this. it was made of high qualiy ingredients. Plus the packaging and sizes were perfect. over all good quality.
This was my first time trying L-Theanine. I have tried this supplement for three days and have not felt any changes. I was hoping to feel more calm and focused upon taking this. While I’m not yet experiencing any improvements, I have 0 side effects. It’s possible the 100 mg dose isn’t enough and I may need to double my dose (for reference, Thorne’s L-Theanine is 200 mg). While I’m not sure whether this will do anything with continued use, I still give it 4 stars because LifeExtensions is a brand I trust and this supplement is well-priced for the quality. I also appreciated that the bottle is small.
There are few things better than a personal recommendation, so I gave it a try. I take one capsule at bedtime, and my sleeping has improved dramatically. L-Theanine has become part of my night time ritual. I tried several other brands of L-Theanine. Came back to this brand. Cheaper does not equal a quality product that works
Life Extension L-Theanine is a high-quality supplement that effectively promotes relaxation and mood enhancement. The 100 mg dose provides a noticeable calming effect without causing drowsiness or impairing cognitive function. It's particularly beneficial for individuals struggling with stress, anxiety, or sleep disturbances. The supplement is well-tolerated and suitable for vegetarians. Overall, Life Extension L-Theanine is a reliable and effective choice for managing stress and promoting a sense of calm well-being.
For an easily distracted and anxious brain, I take one capsule after a caffeinated drink if I’m having it after 2pm. This helps mitigate jitteriness and any stimulus effect that comes with caffeine other than the aid of focus. I also take it when I know I have a full day the next day, as it helps me fall back asleep easier whenever I wake throughout the night. The quality is great! I often break the powder out of the capsule to mix with my magnesium and glycine mix for a pre-sleep cocktail. Perfect size and cleaner ingredients when you don’t ingest the capsule cover. Benefits sleep and restoration!
Nothing to complain with this supplement. Capsules look fine, no smell or taste. Theanine is an natural adaptogene, also found in green tea. It helps with anxiety and stress. Works perfectly together with caffeine.
Like a lot of people in this crazy world I have experienced levels of stress that seem difficult to manage at times. Unfortunately like many my mind races at night and it's hard to shut my thoughts off. I take Life Extension L-Theanine an hour before bed and my body and mind completely relax and I sleep all night long. I'm so thankful that I'm able to get a restful night of sleep now. I've tried other companies in the past but nothing holds a candle to the results I've experienced with Life Extension.
| Serving Size | 1 Vegetarian Capsule |
| Servings per Container | 60 |
| Amount Per Serving | % Daily Value |
| Vitamin C (as ascorbyl palmitate) | 2 mg |
| Suntheanine (L-theanine) | 100 mg |
