non-nutrient/non-botanical

Theanine supplements

Half of the 1,602 theanine supplements in the NIH label database that print an amount list 100 mg or less per serving; the middle half list 90 mg to 200 mg (DSLD version 9.4.0, January 2026). The 134 products whose only supplement ingredient is theanine list a median of 200 mg.

How much theanine do supplements contain?

The median product lists 100 mg per serving. One in ten lists 50 mg or less, one in ten 248 mg or more. The amount printed most often is 200 mg (463 products).

Which products list the most theanine?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Calm/RechargeAllergy Research Group500 mg
• Sleep Juice Sweet TeaEA Enhnaced500 mg
• Fade Out GrapeRedcon1500 mg
• Pro-SomIntegrative Therapeutics500 mg
• Hibernate Peach MangoHuge Nutrition500 mg
• L-Theanine (500 mg)BulkSupplements.com500 mg
• ZmtSwolverine500 mg
• Sleep and Grow Sweet TeaEA500 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2012 list a median of 100 mg; those entered in 2025, 150 mg.

In which products and brands?

Brands listing it most: PS ProSupps (34), Jacked Factory (23), NutraBio (22), Alani Nu (22), OLLY (21), MuscleTech Performance Series (20), Natrol (18), Irwin Naturals (18), LifeSeasons (16), Jacked Factory JF (16).

Every product listing theanine

2,133 products, A to Z by name (page 31 of 43), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Relieve-R PMLifeSeasons · off the market75 mg
• Relieve-R PMLifeSeasons Therapeutics75 mg
• Relora CalmThe Vitamin Shoppe100 mg
• Relora SereneR-Garden100 mg
• REM SleepPhysio Vites · off the marketin a blend
• REM ZoneUltimate Nutrition200 mg
• RenewVali50 mg
• RenewAdonis Lifestyle200 mg
• Renew 180Indiana Botanic Gardens50 mg
• Reset & RelaxMyTrition200 mg
• Resilient Women's Menopause SupportCenegenics Naturals · off the market25 mg
• Respawn BombsicleGorilla Mind150 mg
• Respawn Cherry BlackoutGorilla Mind75 mg
• Respawn Jungle JuiceGorilla Mind75 mg
• Rest & RenewLES Labs100 mg
• Rest EasyPrima100 mg
• Rest GrapeProtekt200 mg
• Rest Well Tasty Minty Flavour SprayHigher Nature1.5 mg as transcribed, likely a slip
• Rest-AssuredCenegenics · off the market25 mg
• Rested-AF Lemon GingerSteel100 mg
• Restful Night Extended ReleaseDr. Whitaker · off the market200 mg
• Restful Night Extended ReleaseWhitaker Nutrition200 mg
• Restful SleepWhole Foods Premier Formula50 mg
• Restful SleepViMulti400 mg
• Restful Sleep Blackberry ZenOLLY200 mg
• Restlex +BioPerineApproved Science200 mg
• RestorKatalyst Nutraceuticals150 mg
• Restorative SleepMyTrition200 mg
• RestoreNatures Plus BrainCeutix · off the market50 mg
• RestoreIso-Sport25 mg
• RestoreNaturesPlus BrainCeutix50 mg
• RestoreRegular Girl200 mg
• Restore Advance XRGNC Pro Performance50 mg
• RestoritHealth Directin a blend
• Revitalizing Sleep FormulaEnzymatic Therapy Fatigued to Fantastic! · off the market50 mg
• Revitalizing Sleep FormulaEnzymatic Therapy · off the market50 mg
• Revitalizing Sleep FormulaNature's Way200 mg
• ReZENTranscendence100 mg
• Rhodiola & Ashwagandha with L-TheanineSwiss BioEnergetics300 mg
• Rhodiola-PlusIrwin Naturals80 mg
• Rise Pre-Workout Blackberry BlastSheer Strength Labs100 mg
• RM-10 UltraGarden of Lifein a blend
• Rockstar Relax Tropical Guava FlavorRockstar25 mg
• Rogue Energy Blue RaspberryRogue Energy200 mg
• Rogue Energy Dragon Fruit LemonadeRogue Energy90 mg
• Rogue Energy Rocket PopRogue Energy90 mg
• Rogue Energy Strawberry KiwiRogue Energy200 mg
• Royal XXI King1st Phormin a blend
• Royal XXI Queen1st Phormin a blend
• RPM Pre-Workout Blue RazEvlution Nutrition50 mg

Where next?

• Check an amount of theanine
• Labels above the upper limit
• All ingredients