amino acid

Ornithine supplements

Half of the 258 ornithine supplements in the NIH label database that print an amount list 400 mg or less per serving; the middle half list 100 mg to 900 mg (DSLD version 9.4.0, January 2026). The 24 products whose only supplement ingredient is ornithine list a median of 900 mg.

How much ornithine do supplements contain?

The median product lists 400 mg per serving. One in ten lists 32.1 mg or less, one in ten 1,000 mg or more. The amount printed most often is 1,000 mg (36 products).

Which products list the most ornithine?

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).

• GH Stack Grape FlavorUniversal3,000 mg
• GH MaxUniversal2,500 mg
• NO2 Black Muscle+Pump Black Razzy RippedMRI Performance2,250 mg
• NO2 Black Muscle+Pump Jacked JuiceMRI Performance2,250 mg
• NO2 Black Muscle+Pump SwoleberryMRI Performance2,250 mg
• Pre-Workout Complex Blue RaspberryNutricost2,200 mg
• L-Ornithine 667 mgBIOVEA2,001 mg
• Pure L-Ornithine Powder UnflavoredDoctor's Best2,000 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2020 list a median of 400 mg; those entered in 2025, 775 mg.

In which products and brands?

Brands listing it most: NutraBio (22), NOW Sports (9), Metagenics (6), Core Nutritionals (5), Swanson (4), Nutri-West (4), Xtendlife (4), NOW (4), Precision Engineered (4), Source Naturals (4).

Every product listing ornithine

441 products, A to Z by name (page 5 of 9), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• InsomniaMD PremiumPremium Certified400 mg
• InsomniarApproved Science400 mg
• Intestinal Detox Raspberry LemonadeGNC Earth Genius · off the marketin a blend
• Intra Blast Blueberry LemonadeNutraBio1,000 mg
• Intra Blast Dragonfruit CandyNutraBio1,000 mg
• Intra Blast Grape Berry CrushNutraBio1,000 mg
• Intra Blast New York PunchNutraBio1,000 mg
• Intra Blast Orange MangoNutraBio · off the market1,000 mg
• Intra Blast Orange MangoNutraBio Performance1,000 mg
• Intra Blast Strawberry Lemon BombNutraBio Performance1,000 mg
• Intra Blast Sweet TeaNutraBio Performance1,000 mg
• Intra Blast Tropical Fruit PunchNutraBio1,000 mg
• intraKID All-In-One All Natural Fresh Raspberry TasteDrucker Labs · off the marketin a blend
• intraKID All-In-One All Natural Raspberry FlavorDrucker Labsin a blend
• intraMAX 2.0 Peach Mango FlavorDrucker Labsin a blend
• ISB-FormulaNutri-Westin a blend
• Keto Burn Diet DropsJustified Laboratoriesin a blend
• Keto DropsToplux Nutritionin a blend
• Kidney Detox Touch of CitrusGNC Earth Genius · off the marketin a blend
• L-Arginine & L-OrnithineSwanson250 mg
• L-Arginine & L-Ornithine ComplexVSN Vital Strength Nutrition · off the market250 mg
• L-Arginine & L-Ornithine ComplexVitaCeutical Labs250 mg
• L-Arginine & L-Ornithine Complex With Alpha-Lipoic AcidVitamer Laboratories · off the market250 mg
• L-Arginine + L-Ornithine 750 mgNutricost250 mg
• L-Arginine 500 mg L-Ornithine 250 mgBluebonnet250 mg
• L-Arginine 500 mg L-Ornithine 500 mgKAL500 mg
• L-Arginine L-OrnithineGNC Pro Performance · off the market1,000 mg
• L-Arginine L-OrnithineBest Naturals250 mg
• L-Arginine L-Ornithine 1,500 mgAN Amazing Nutrition Amazing Formulas500 mg
• L-Arginine L-Ornithine 2500GNC Pro Performance1,000 mg
• L-Arginine L-Ornithine 500 mg/250 mgSolgar · off the market250 mg
• L-Arginine L-Ornithine 500/250Solgar · off the market250 mg
• L-Arginine L-Ornithine 750 mgBIOVEA250 mg
• L-Arginine L-Ornithine CapsCountry Life · off the market293 mg
• L-Arginine L-Ornithine Hydrochloride CapsCountry Life293 mg
• L-Arginine L-Ornithine Hydrochloride Caps 1000 mgCountry Life · off the market293 mg
• L-Arginine L-Ornithine L-LysineGood 'N Natural · off the market900 mg
• L-Arginine L-Ornithine L-Lysine ComplexPuritan's Pride900 mg
• L-Arginine-HCL L-Ornithine-HCLPureBulk.com500 mg
• L-Carnitine LS3 + Energy Peach MangoiSatoriin a blend
• L-OrnithineNOW Sports · off the market800 mg
• L-OrnithineTwinlab500 mg
• L-OrnithineHerbadiet1,500 mg
• L-OrnithineEarthborn Elements425 mg
• L-Ornithine 500 mgSolgar500 mg
• L-Ornithine 500 mgDouglas Laboratories500 mg
• L-Ornithine 500 mgNutricost500 mg
• L-Ornithine 500 mgSwanson500 mg
• L-Ornithine 500 mgNOW1,500 mg
• L-Ornithine 500 mgBluebonnet500 mg

Where next?

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