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Low-calorie amino acid supplement
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (small) of Theanine supplement (0 g) has 1 calories. That works out to 400 calories per 100 g. It contains 0 g of carbs, 0.2 g of protein, 0 g of fat and 0 g of fiber. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Selected: 1 piece (small) · 0.2 g
1
KCAL / 0.2G
Carbs
0g
· 0% DV
Protein
0.2g
· 0% DV
Fat
0g
· 0% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 0% · Protein 100% · Fat 0%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 1 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0 mg | 0% |
| Total carbohydrate | 0 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 0.2 g | 0% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 piece (small) | 0.2 g | 1 kcal |
| 1 piece (extra small) | 0.1 g | 0 kcal |
| 1 piece (medium) | 0.3 g | 1 kcal |
| 2 piece (double) | 0.5 g | 2 kcal |
| 1 teaspoon (mini) | 2 g | 8 kcal |
| 1 tablespoon (small) | 6 g | 24 kcal |
| 1 pack (mini) | 10 g | 40 kcal |
| 100 g | 100 g | 400 kcal |
Calculated from 400 calories per 100 g.
A theanine supplement provides concentrated L-theanine, an amino acid found naturally in tea, in an ultra-processed product. It is studied for possible effects on relaxation and attention, but it is not established as a treatment for a health condition.
A theanine supplement has not been proven to treat anxiety. Research into relaxation and stress-related effects is limited, so it should not replace evidence-based care for persistent or severe anxiety.
A theanine supplement is not a proven treatment for insomnia. Some studies examine whether it may support relaxation or sleep, but the evidence does not establish that it reliably improves sleep for everyone.
Yes, a theanine supplement can be taken alongside caffeine, and the combination has been studied. Theanine does not cancel out caffeine, and it cannot guarantee that coffee or another caffeinated drink will not disrupt your sleep.
There is no reliably established time at which a theanine supplement should start working. Study results and products vary, so do not assume that a lack of an immediate effect means you should take more.
Usually, yes: supplements commonly provide L-theanine, the form of theanine found in tea. Check the product’s ingredient list, since a supplement may also contain other active ingredients.
A theanine supplement may cause headache, dizziness, or stomach discomfort in some people. Stop taking it if you feel unwell, and consider that other ingredients in a combination product could also be responsible.
Some people use a theanine supplement daily, but long-term effects are less well studied than short-term use. Daily use is not established as necessary, so follow the product directions rather than increasing or extending use on your own.
A theanine supplement provides concentrated theanine, while green tea also provides caffeine and other tea compounds. Neither is universally better; choose based on whether you want tea as a drink or a concentrated supplement.
Ask a doctor or pharmacist before using a theanine supplement during pregnancy or breastfeeding, or if you take medication. Safety information for these situations is limited, and a professional can check your individual circumstances.
Vitamins
Vitamin A
0µg · 0% DV
B1
0mg · 0% DV
B2
0mg · 0% DV
B3
0mg · 0% DV
Minerals
Calcium
0mg · 0% DV
Iron
0mg · 0% DV
Magnesium
0mg · 0% DV
Zinc
0mg · 0% DV
Sodium
0mg · 0% DV
Potassium ⭐
0mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 1 calories in 1 piece (small) (0.2 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
A theanine supplement provides the amino acid theanine, which occurs naturally in tea leaves, in a concentrated form. It is commonly sold as a capsule, tablet or powder, rather than as a tea or other ready-to-drink product. Unlike brewed tea, it is not a familiar part of everyday food traditions in most English-speaking households; people generally take it with water, following the directions on the pack. Capsules have little noticeable taste, while powder can be stirred into a drink. Nutritionally, it is an amino-acid-based product with no carbohydrate or fat listed. Check the serving directions, and choose water if you want to avoid changing the flavour of another drink.
Low
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
NOVA 4
Ultra-Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
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Nutrition data compiled from USDA FoodData Central and scientific sources.