NEW
🫀 CoQ10
Cost per serving
$0.48
amino · 19 active deals
The best-value L-Theanine right now is about $0.05 per dose — across 19 tracked products the median is $0.271/dose, so shopping on cost-per-dose can cut your cost several-fold. Every L-Theanine deal here is ranked by cost per dose— what you actually pay per serving, not the sticker price — because forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Right now the best value across our full L-Theanine catalog is at $0.05 per serving.
Every L-Theanine deal above is ranked by real cost per dose with no paid placement — see our and .
3 of 5 tracked L-Theanine brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
Saffron Gummies Supplements with 88.5 mg Saffron Extract at $0.05 — the lowest cost-per-dose l-theanine in our catalog. See the full ranking on the Best L-Theanine page.
We're tracking 19 active L-Theanine deals across Amazon US and partner retailers, ranked by community votes and cost-per-dose — not paid placement.
Across 19 tracked L-Theanine deals the median cost-per-dose is $0.271; the cheapest quartile comes in under $0.212 . Anything below the median is a solid deal for the same molecule.
Deals are submitted by the community and ranked by net votes (hot minus cold) plus cost-per-dose normalised across container sizes. We take no affiliate kickbacks for ordering; sponsored slots, when present, are clearly badged.
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.
Cost per serving
$0.48
Cost per serving
$1.33
60 servings · ~60-day supply
Cost per serving
$0.45
60 servings · ~60-day supply
Cost per serving
$0.05
120 servings · ~120-day supply
Cost per serving
$0.17
90 servings · ~90-day supply
Cost per serving
$0.30
Avg·−46%60 servings · ~60-day supply
Cost per serving
$0.27
Avg·−50%60 servings · ~60-day supply
Cost per serving
$0.21
Cheap·−76%72 servings · ~72-day supply
Cost per serving
$0.24
Avg·−62%90 servings · ~90-day supply
Cost per serving
$0.17
Cheap·−80%90 servings · ~90-day supply
Cost per serving
$0.22
Avg·−73%120 servings · ~120-day supply
Cost per serving
Cost per serving
$0.67
Pricey60 servings · ~60-day supply
Cost per serving
$0.30
Avg·−46%60 servings · ~60-day supply
Cost per serving
$0.73
Pricey30 servings · ~30-day supply
Cost per serving
$0.22
Avg·−70%120 servings · ~120-day supply
Cost per serving
$0.89
PriceyCost per serving
$0.33
Cost per serving
$0.18
180 servings · ~180-day supply
Amazon.com · 🫀 CoQ10
CPS
Price
$28.98
Amazon.com · 🧠 Alpha-GPC
CPS
Price
$79.98
Amazon.com · 🌿 Ashwagandha KSM-66
CPS
Price
$26.72
Amazon.com · 🌿 Ashwagandha KSM-66
CPS
Price
$6.23
Amazon.com · 🌿 Ashwagandha KSM-66
CPS
Price
$15.18
HerbsPro · 🍵 L-Theanine
CPS
Price
$18.00
HerbsPro · 🍵 L-Theanine
CPS
Price
$16.23
HerbsPro · 🍵 L-Theanine
CPS
Price
$14.98
HerbsPro · 🍵 L-Theanine
CPS
Price
$21.75
HerbsPro · 🍵 L-Theanine
CPS
Price
$14.98
Amazon.com · 🍵 L-Theanine
CPS
Price
$25.99
Natural Factors · Amazon.com · 🍵 L-Theanine
CPS
Price
$13.33
Amazon.com · 🍵 L-Theanine
CPS
Price
$39.95
Life Extension · Amazon.com · 🍵 L-Theanine
CPS
Price
$18.00
Amazon.com · 🍵 L-Theanine
CPS
Price
$21.95
NOW Foods · Amazon.com · 🍵 L-Theanine
CPS
Price
$26.75
Nature Made · Amazon.com · 🍵 L-Theanine
CPS
Price
$44.54
Sports Research · Amazon.com · 🍵 L-Theanine
CPS
Price
$19.95
Amazon.com · 🌿 Ashwagandha KSM-66
CPS
Price
$31.88
60 servings · ~60-day supply
$0.22
60 servings · ~60-day supply
50 servings · ~50-day supply
60 servings · ~60-day supply
