L-Theanine

L-Theanine – same-day delivery available. Just make sure the product you want is in stock. Choose products to buy from the comfort of your home and have them delivered to your address, to an AlzaBox, or to one of our stores. Learn more about why shop on Alza.cz.

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7 reasons to shop for L-Theanine on Alza.cz

  • We have a wide network of stores across the Czech Republic, where we follow all hygiene measures, as well as contactless AlzaBoxes (pick-up points).
  • You can see the availability of each item right away. Don't forget that we deliver on weekends too.
  • We accept most payment methods, including contactless and cryptocurrency.
  • You can easily return or exchange your product at any of our AlzaBoxes.
  • Need assistance? Our customer support is available 24/7.
  • We complement our range with accessories and additional services.
  • You'll find all the essential information for each product, and for some, user reviews to help with your selection.

What to consider when choosing L-Theanine?

If you're planning to get L-Theanine, there are a few aspects that can help you choose the right product. In the left menu, you can use the parametric filter to narrow down the selection to match your preferences. We also recommend sorting by popularity or price.

Make your selection easier. Click through our pre-made filters for the category: L-Theanine

Are you looking for the best L-Theanine? Browse products sorted by popularity, or consult the reviews from other users.

Cheapest vs. most expensive L-Theanine

If you are looking for products based on price, you can browse the lowest priced L-Theanine, or choose to sort by price from highest to lowest.

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5.0 1×
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OlaOla Miloslav Šindelář Edition Everyday sleep 210g
Dietary Supplement - combination of glycine (3000mg), sour cherry juice (735mg) and kiwi extract (520mg) per serving, intended for adults, made from Czech ingredients, 210g
  499,-
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In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: SPTola053
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Puhdistamo Night Magnesium 120 Capsules + 60 Capsules (Ilta Magnesium)
Magnesium - a combination of magnesium bisglycinate (125mg), L-tryptophan (50mg), and passion flower (Passiflora) extract in 1 capsule, contains L-theanine, 120 capsules + 60 capsules
  449,-
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In stock 5 pcs
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Order Code: SPTpdh002
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VENIRA cortisol stop stress support 60 capsules
Dietary Supplement - combination of magnesium (30 mg), bacopa (60 mg) and ginseng (50 mg) in 1 capsule, natural, without additives, 60 capsules
BLACK FRIDAY -15 % 479,- 569,-
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In stock
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Order Code: DOST290
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Complex Natural L-Theanine, 60 capsules
L-theanine - green tea extract (500 mg), of which L-theanine (200 mg) in 1 capsule, natural, suitable after a late workout, vegan, 40 capsules
BLACK FRIDAY -15 % 379,- 449,-
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In stock
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Order Code: DOST305
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OlaOla Deep Sleep Support, 60 capsules
Dietary Supplement - to promote deep sleep and nighttime regeneration
BLACK FRIDAY -20 % 199,- 249,-
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In stock
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Order Code: SPTola012
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Powerlogy Upgraded Brain Focus 60 capsules
Dietary Supplement - complex of nootropics for brain nutrition, concentration and memory support
  899,-
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In stock > 5 pcs
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Order Code: SPTpowl040
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NutriWorks Good Night Magnesium Worx 200 g
Magnesium - Bisglycinate, loose powder, adult
  549,-
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In stock 5 pcs
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Order Code: SPTfoa076
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Insync with my Aura 60 capsules
Dietary Supplement - a combination of L-theanine, saffron and magnesium bisglycinate, vegan, 60 capsules
  549,-
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In stock > 5 pcs
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Order Code: DOST409
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BrainMax L-Theanine & Myo-Inositol 60 Plant-Based Capsules
L-theanine - a combination of L-Theanine (200mg), decaffeinated green tea extract (320mg) and Myo-inositol (100mg) in 1 capsule, contains no fillers, 60 plant-based capsules
  469,-
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In stock > 5 pcs
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Order Code: SPTbrma415
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Blendea Ashwagandha Latte Mix 100g
Ashwagandha - instant drink mix with ashwagandha extract (KSM-66) and L-theanine, 500mg of ashwagandha per serving, with dried coconut milk, vanilla and cardamom, 100g
  399,-
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In stock > 10 pcs
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Order Code: SPTble089
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BrainMax NeuroShot, 12 × 100 ml
Dietary Supplement - nootropic shot, for supporting concentration, performance and energy, lemon flavour
  790,-
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In stock > 5 pcs
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Order Code: SPTbrma354
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BrainMax Neurohacker powder, passion fruit, 135g
Dietary Supplement - blend of L-tyrosine (1000mg), citicoline (400mg) and caffeine (97.6mg) per 4.5g serving, passion fruit flavour, 135g
New arrival 399,-
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In stock > 10 pcs
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Order Code: LEK113
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Life Extension L-Theanine 100 mg 60 capsules
Amino Acids - AlphaWave L-theanine 200 mg in 2 capsules, 60 vegetarian capsules
  629,-
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In stock > 5 pcs
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Order Code: SPTlif234
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Superionherbs KOHI Focus Gummies 60 jelly candies
Dietary Supplement collagen combination (100 mg), L-theanine (50 mg) and hericium extract (50 mg) in 1 jelly candy, also contains reishi extract, magnesium and vitamins B6 and B12, without gluten and added sugar, raspberry flavor, 60 jelly sweets
  630,-
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In stock > 5 pcs
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Order Code: DOST322
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Zerex HDAD 60 capsules
Dietary Supplement - combination of magnesium (50 mg), L-tyrosine (150 mg), L-theanine (150 mg) in 1 capsule and other substances, 60 capsules
  479,-
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In stock 2 pcs
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Order Code: SPTzere094
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NOZONO DeepRest
Dietary Supplement - magnesium 79mg, L-theanine 67mg, chamomile extract 20mg, vitamin B6 1mg per capsule; 9 capsules, glass jar
New arrival 1,893,-
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In stock > 5 pcs at the supplier's
Order Code: NOZlek001
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BrainMax sleep set
Food Supplement Set - a combination of MagChel® Mg+20 magnesium bisglycinate (625mg, of which 125mg is elemental magnesium), sour cherry juice (50mg) and GABA (40mg) in 1 capsule, vegan, 100 capsules + sleeping mask
New arrival 998,-
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In stock > 5 pcs
Order Code: SPTbio009bun
5.0 4×
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BrainMax Mood Booster, Mood Support Complex, 90 herbal capsules
Dietary Supplement - St. John's wort extract (400 mg), basil sacred (100 mg), Pantothenic acid (18 mg) and other ingredients in 1 dose, vegetable capsules, made without artificial colours and preservatives, suitable for vegans, 90 vegetable capsules
  799,-
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In stock > 5 pcs at the supplier's
Order Code: SPTbrma054
4.1 17×
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BrainMax L-Theanine powder, 90 g
L-theanine - L-theanine extract, 0.2 g in 1 scoop, is classified as a non-essential amino acid and is commonly found in green tea, 450 doses, 90 g
  299,-
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In stock > 10 pcs at the supplier's
Order Code: SPTbrma101
4.3 5×
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OstroVit L-Theanine VEGE, 90 capsules
L-theanine - L-theanine, 200 mg in 1 capsule, vegan, 90 capsules
  209,-
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In stock > 10 pcs at the supplier's
Order Code: OstroVit01
3.0 2×
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Quicksilver Scientific Liposomal GABA with L-theanine, 50 ml
Dietary Supplement - Combination of gamma-aminobutyric acid (200 mg), L-theanine (100 mg) and phosphatidylcholine (134 mg), liposomal form ensures maximum efficacy and absorption, pump for easy dosing, 50 ml
  846,-
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In stock 2 pcs at the supplier's
Order Code: SPTdstr011
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Jarrow Formulas Theanine, 200 mg, 60 veg capsules
L-theanine - vegan, gluten-free
  589,-
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In stock > 5 pcs at the supplier's
Order Code: SPTjar006
4.0 5×
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Stada SpiLEEP forte 30 tablets
Dietary Supplement - Combination of hop extract (150 mg), L-theanine (100 mg) and valerian (50 mg) in 1 tablet, 30 tablets
  239,-
Currently Unavailable
Order Code: SPTstada026
4.6 14×
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Clinical Melatonin Forte Magnesium L-Theanine 100 + 50 tablets
Melatonin - containing magnesium and l-theanine, 150 tablets
Great price 269,-
Currently Unavailable
Order Code: SPTcli051
In the category L-Theanine on Alza.cz, we currently have a total of 53 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
Check out products sorted by price starting with the lowest price in the category cheap l-Theanine