at Source Naturals
Source Naturals Serene Science® L-Theanine
Capsule / 200 mg / 30 Capsule
$0.63per 200 mg
5% less per serving than Momentous
Momentous is $0.67 per 200 mg.
$18.98 for 6g L-theanine · 30 servings of 200 mg
BuySave me money at Source Naturals (opens in a new tab)
Price checked
Final price, stock and shipping are set by Source Naturals at checkout. Some Buy links earn us a commission. Your price stays the same. How we make money
The label math
How we got $0.63. The tub price, divided by the servings inside.
How we calculated this
Source Naturals
Serene Science® L-Theanine
- Price at Source Naturals
- $18.98
- Contents
- 6g L-theanine
- Servings
- 30 capsules × 200 mg L-theanine = 6 g ÷ 200 mg = 30
$18.98 ÷ 30 servings of 200 mg = $0.63
$0.63 per 200 mg
Price checked
Price history. One point for every daily check.
Price per 200 mg, 34 daily checks at Source Naturals.
- Every check
- $0.63 Oct 5 to Nov 7
Cheaper per serving. Other brands on the same list.
Per 200 mg · % less than Momentous
- BulkSupplements L-Theanine Powder
$0.011 per 200 mg
98% lessat BulkSupplements
BuySave me money at BulkSupplements (opens in a new tab) - PureBulk L-Theanine
$0.013 per 200 mg
98% lessat PureBulk
BuySave me money at PureBulk (opens in a new tab) - Nutricost L-Theanine Powder
$0.036 per 200 mg
95% lessat Nutricost
BuySave me money at Nutricost (opens in a new tab)
About this product. In Source Naturals's own words.
When stress strikes, leaving you feeling restless and distracted, it can be difficult to bring things back into focus.
From the Source Naturals product page. These are Source Naturals's own words, not ours. We do not verify them, we do not make or endorse any claim in them, and we are not liable for them. These statements have not been evaluated by the Food and Drug Administration. See the disclaimer.
What this serving is. Per 200 mg.
- Priced per
- 200 mg
- Contents
- 6g L-theanine
- Servings
- 30
- Serving on the label
- 200 mg
- Listed as
- Capsule / 200 mg / 30 Capsule
- Stock
- In stock at the last check
L-theanine on its own. Price per 200 mg. Blends with caffeine or GABA are not on this list.
Prices shown per 200 mg of L-theanine. That is a unit for comparing prices, not a recommendation of what to take.
Serene Science L-theanine, 200 mg per capsule; only the capsule variants are priced (tablets and the powder are left off). Affiliate: in-house program launched 2025 (rate not published).
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