| RegenerLife Watermelon | Natural Factors | 1500 mg | — | Powder |
| Acetyl L-Carnitine 1200 mg | Divine Bounty | 1200 mg | — | Capsule |
| Weight Control Caps | Mountain Meadow Herbs | 1000 mg | — | Capsule |
| Acetyl- L-Carnitine 500 mg● OTHER INGREDIENTS (2) | Natural Factors | 1000 mg | — | Capsule |
| ZONE Sour Candy● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| Double Tap● OTHER INGREDIENTS (3) | Redcon1 | 1000 mcg | — | Capsule |
| Acetyl-L-Carnitine with BIOSINT Carnitines 500 mg● OTHER INGREDIENTS (1) | Doctor's Best | 1000 mg | — | Capsule |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (1) | Doctor's Best | 1000 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg | NutraBio | 1000 mg | — | Capsule |
| Thermo● OTHER INGREDIENTS (2) | Arms Race Nutrition | 1000 mg | — | Capsule |
| ZONE Arnold Palmer● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| ZONE Berrylicious● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| Vital Brain Powder | Vital Nutrients | 850 mg | — | Powder |
| Vital Brain Powder Lemon Flavored | Vital Nutrients | 850 mg | — | Powder |
| BrainSustain Vanilla Delight⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | XYMOGEN | 800 mg | — | Powder |
| Energy Formula● OTHER INGREDIENTS (3) | Juvenon | 800 mg | — | Capsule |
| L-Carnitine Formula | SuperSmart | 760 mg | — | Powder |
| Ciltep● OTHER INGREDIENTS (2) | NS Natural Stacks | 750 mg | — | Capsule |
| Neuro Fuel● OTHER INGREDIENTS (1) | NS Natural Stacks | 750 mg | — | Capsule |
| Neuro Fuel Lemonade● OTHER INGREDIENTS (1) | NS Natural Stacks | 750 mg | — | Powder |
| Acetyl-L-Carnitine 750 mg● OTHER INGREDIENTS (2) | The Vitamin Shoppe | 750 mg | — | Capsule |
| Memory Pro | Pure Encapsulations | 750 mg | — | Capsule |
| Brain Charge⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Source Naturals | 750 mg | — | Tablet or Pill |
| EnerVital● OTHER INGREDIENTS (2) | Source Naturals | 700 mg | — | Tablet or Pill |
| Ultimate Neuro Complex● OTHER INGREDIENTS (2) | Natural Factors 3 Brains | 666 mg | — | Capsule |
| NovaLean Grape Headz● OTHER INGREDIENTS (1) | InnovaPharm | 500 mg | — | Powder |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (1) | Seeking Health | 500 mg | — | Capsule |
| Acetyl-L-Carnitine Alpha-Lipoic Acid 500 mg/200 mg● OTHER INGREDIENTS (4) | GNC | 500 mg | — | Other (e.g. tea bag) |
| Focus XD Mind Fuel● OTHER INGREDIENTS (3) | Axis Labs | 500 mg | — | Capsule |
| Acetyl L-Carnitine with CoQ-10● OTHER INGREDIENTS (2) | Bronson | 500 mg | — | Capsule |
| Advanced Brain Sharp● OTHER INGREDIENTS (2) | The Vitamin Shoppe | 500 mg | — | Capsule |
| Mitochondrial Formula | SuperSmart | 500 mg | — | Capsule |
| CogniPhos | Pure Encapsulations | 500 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg | Health Thru Nutrition | 500 mg | — | Capsule |
| ActivNutrients Performance● OTHER INGREDIENTS (1) | XYMOGEN | 500 mg | — | Capsule |
| Uncle BAM● OTHER INGREDIENTS (4) | 'Merica Labz | 500 mg | — | Capsule |
| Liposomal Acetyl L-Carnitine+ | Codeage | 500 mg | — | Capsule |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (2) | California Gold Nutrition | 500 mg | — | Capsule |
| MotilPro | Pure Encapsulations | 500 mg | — | Capsule |
| Remember Me | HoltraCeuticals | 500 mg | — | Capsule |
| Top 10 Healers⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Source Naturals | 500 mg | — | Tablet or Pill |
| Acetyl-L Carnitine 500 mg● OTHER INGREDIENTS (1) | Klaire Labs | 500 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg● OTHER INGREDIENTS (2) | Jarrow Formulas | 500 mg | — | Capsule |
| Optimal Prenatal Vanilla | Seeking Health | 500 mg | — | Powder |
| Acetyl L-Carnitine 500 mg | Carlson | 500 mg | — | Capsule |
| Pre Sweat Watermelon Yuzu● OTHER INGREDIENTS (2) | SR Sports Research | 500 mg | — | Powder |
| Nerve Comfort | SuperSmart | 500 mg | — | Tablet or Pill |
| Acetyl L-Carnitine & Alpha-Lipoic Acid● OTHER INGREDIENTS (2) | Source Naturals | 500 mg | — | Tablet or Pill |
| Acetyl L-Carnitine 500 mg● OTHER INGREDIENTS (2) | Vitamer Laboratories | 500 mg | — | Capsule |
| Neuro Optimizer● OTHER INGREDIENTS (3) | Jarrow Formulas | 500 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg● OTHER INGREDIENTS (2) | Puritan's Pride | 500 mg | — | Capsule |
| Optimal Prenatal Chocolate | Seeking Health | 500 mg | — | Powder |
| Acetyl L-Carnitine | MRM Nutrition | 500 mg | — | Capsule |
| Carnitine Complex 1,000 mg | Dr. Mercola | 500 mg | — | Capsule |
| Brain Sharp | The Vitamin Shoppe | 500 mg | — | Capsule |
| Vital Fuel● OTHER INGREDIENTS (1) | Akasha Naturals | 500 mg | — | Powder |
| LEANMODE● OTHER INGREDIENTS (2) | Evlution Nutrition | 500 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg● OTHER INGREDIENTS (1) | Solaray | 500 mg | — | Capsule |
| MemoRegen● OTHER INGREDIENTS (2) | Karuna | 500 mg | — | Capsule |
| CoQ-10 Plus L-Carnitine● OTHER INGREDIENTS (2) | Botanic Choice | 500 mg | — | Capsule |
| Acetyl-L-Carnitine 250 mg | Allergy Research Group | 500 mg | — | Capsule |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (1) | Life Extension | 500 mg | — | Capsule |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (2) | The Vitamin Shoppe | 500 mg | — | Capsule |
| Acetyl-L-Carnitine● OTHER INGREDIENTS (1) | Seeking Health | 500 mg | — | Capsule |
| LeanMode● OTHER INGREDIENTS (2) | Evlution Nutrition | 500 mg | — | Capsule |
| Burn● OTHER INGREDIENTS (2) | Core Nutritionals | 500 mg | — | Capsule |
| Acetyl L-Carnitine● OTHER INGREDIENTS (3) | Core Nutritionals | 500 mg | — | Capsule |
| Acetyl L-Carnitine 500 mg● OTHER INGREDIENTS (2) | Bronson | 500 mg | — | Capsule |
| Acetyl-L-Carnitine 500 mg● OTHER INGREDIENTS (1) | Thorne | 500 mg | — | Capsule |
| Brain Select⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Moss Nutrition | 425 mg | — | Capsule |
| Vital Brain● OTHER INGREDIENTS (1) | Village Vitality | 400 mg | — | Capsule |
| Neuroprotector | VitaMonk | 400 mg | — | Capsule |
| NeuroActives BrainSustain● OTHER INGREDIENTS (2) | XYMOGEN | 400 mg | — | Capsule |
| Tri-Metabolic Control● OTHER INGREDIENTS (1) | Douglas Laboratories | 300 mg | — | Capsule |
| NeuroOne● OTHER INGREDIENTS (1) | Patient One 1 MediNutritionals | 300 mg | — | Capsule |
| KETO Go BHB Peach Mango Powder● OTHER INGREDIENTS (1) | Vimerson Health | 300 mg | — | Powder |
| Acetyl L-Carnitine 250 mg● OTHER INGREDIENTS (1) | Klaire Labs | 250 mg | — | Capsule |
| Mitochondria-ATP | Pure Encapsulations | 250 mg | — | Capsule |
| Keto +Plus Raspberry Lemonade● OTHER INGREDIENTS (1) | SR Sports Research | 250 mg | — | Powder |
| Cognitive Aminos | Pure Encapsulations | 250 mg | — | Capsule |
| Mito-Charger● OTHER INGREDIENTS (1) | AOR Advanced Orthomolecular Research Ultra | 250 mg | — | Capsule |
| Acetyl L-Carnitine 250 mg● OTHER INGREDIENTS (2) | Source Naturals | 250 mg | — | Tablet or Pill |
| MemorAll● OTHER INGREDIENTS (2) | XYMOGEN | 250 mg | — | Capsule |
| Active-Male Brain Awake MAX3 + Nitric Oxide Booster● OTHER INGREDIENTS (4) | Irwin Naturals | 225 mg | — | Softgel Capsule |
| Acetyl L-Carnitine Alpha Lipoic Acid● OTHER INGREDIENTS (3) | Solaray | 200 mg | — | Capsule |
| PQQ Complex● OTHER INGREDIENTS (1) | Protocol For Life Balance | 200 mg | — | Capsule |
| Fireball L-Carnitine Igniter Apple● OTHER INGREDIENTS (1) | Top Secret Nutrition | 200 mg | — | Liquid |
| Hear Loss Formula | SuperSmart | 200 mg | — | Capsule |
| 1-Db Goddess● OTHER INGREDIENTS (3) | 1st Phorm | 200 mg | — | Capsule |
| Fireball L-Carnitine Igniter Cherry● OTHER INGREDIENTS (1) | TS Top Secret Nutrition Sport | 200 mg | — | Liquid |
| Focus Max Two● OTHER INGREDIENTS (2) | Maxi Health | 200 mg | — | Capsule |
| PQQ Energy● OTHER INGREDIENTS (1) | NOW | 200 mg | — | Capsule |
| Neuro-DMG● OTHER INGREDIENTS (4) | DaVinci Laboratories Of Vermont | 175 mg | — | Tablet or Pill |
| Corti-B Plex● OTHER INGREDIENTS (1) | NuMedica | 150 mg | — | Capsule |
| Brain C-13● OTHER INGREDIENTS (1) | Zenith Labs | 150 mg | — | Capsule |
| Neuherin With Standardized Ginkgo, ALC, And Thiamine● OTHER INGREDIENTS (2) | Ecological Formulas | 120 mg | — | Capsule |
| Heart Vitality⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | HerbaMe | 100 mg | — | Capsule |
| Brain Wellness● OTHER INGREDIENTS (2) | Bio Nutrition | 100 mg | — | Capsule |
| Carnitine Synergy● OTHER INGREDIENTS (2) | Designs for Health | 100 mg | — | Capsule |
| A.M. Activator | ProCaps Laboratories | 100 mg | — | Capsule |