Experience balanced, optimized and productive caffeine stimulation
Basic stimulant supplements’ caffeine megadoses lead to short-term jitters and long-range exhaustion. They also often include synthetic colors, preservatives and flavors.
Performance Lab® Stim is smarter and cleaner. With Natural Caffeine 50 mg + Suntheanine® 100 mg, it delivers greater dosing precision, fewer side effects and superior performance-tuned stimulation.
Stim’s ultramodern design also helps restore caffeine-depleted brain chemicals with Ajipure® L-Tyrosine + NutriGenesis® B-Complex – supporting healthy recovery from all caffeine-driven activities.
Designed for Performance
Healthy for Daily Use
Experience Ultramodern Performance-Enhanced Caffeine
Caffeine improves alertness, mood, memory, focus and mental energy
Caffeine amplifies intensity, endurance, physical energy and competitive performance
Caffeine raises metabolic performance to help with fat burning and weight management
Performance Lab® Stim improves caffeine’s performance-enhancing effects with an innovative dual-stack formula designed for cleaner, calmer stimulation.
Stack 1: Performance-Tuned Stimulation
L-Theanine + Caffeine is popularly used to reduce caffeine side effects. Human clinical trials also show L-Theanine + Caffeine may produce a superior stimulation state to caffeine alone, as evidenced by:
- Enhanced attention-switching performance and strengthened resistance to distractions;
- Improved vigilance; sustained focus on monotonous tasks over a longer time;
- Increased alertness, reduced tiredness and improved accuracy during multitasking.
L-Theanine’s additional mood, creativity and relaxation benefits also pair well with caffeine stimulation.
Performance Lab® Stim is designed with 2:1 Suntheanine® L-Theanine to natural caffeine, mirroring the ratio and form used in the most successful human research studies.
Stack 2: Caffeine Balance and Recovery
Caffeine stimulation increases demands on the body’s central nervous system (CNS), endocrine system and cardiovascular system. When these systems are stressed, caffeine side effects may manifest.
Performance Lab® Stim counterbalances caffeine demands with Suntheanine® L-Theanine, Ajipure® L-Tyrosine and NutriGenesis® B-Vitamins.
|Caffeine Demands||Performance Lab® Stim Counterbalance|
Increases demand on neurotransmitters:
L-Tyrosine – Supports dopamine, norepinephrine, epinephrine
L-Theanine – Promotes dopamine and serotonin
B-Complex – Supports serotonin and norepinephrine; catalyzes conversion and utilization of serotonin and dopamine
|Decreases Alpha brain waves||L-Theanine – Raises and sustains Alpha brain waves|
|Creates fight-or-flight stress that activates hypothalamic pituitary adrenal (HPA) axis; stimulates adrenal glands to release stress hormone cortisol||
L-Theanine – Regulates cortisol and promotes relaxation
L-Tyrosine – Optimizes mental and physical performance under stress
B-Complex – Helps meet increased demands of stressed adrenals
|Constricts blood vessels, raising blood pressure; accelerates heart rate||L-Theanine – Helps to maintain healthy blood pressure within normal range; helps to reduce resting heart rate|
|Diuretic effects increase excretion of B-Vitamins needed for cell energy and brain chemical synthesis||B-Complex – Highly absorbable NutriGenesis® B-Vitamins to help restore what caffeine takes away|
|Raises homocysteine (HCY) levels; high HCY linked to brain fog and memory issues||B-Complex – Contributes to daily B6, B9 and B12 intake required for healthy homocysteine metabolism|
Performance Lab® Stim’s innovative caffeine stack produces a superior stimulation state:
Natural Caffeine, 50 mg
When taken correctly, caffeine is a leading natural performance enhancer. However, too much caffeine can lead to overstimulation that paradoxically worsens performance:
To get the best performance benefits, individuals must determine their own optimal caffeine dose and manage caffeine intake accordingly.
This can be challenging for those who consume caffeine from many different sources.
Stim’s 50 mg dose improves caffeine intake control – whether taken alone or combined with coffee, energy drinks or other Performance Lab® formulas.
Suntheanine® L-Theanine, 100 mg
L-Theanine is an amino acid found in green tea that raises the brain’s Alpha wave frequency (8-14 Hz). Amplified Alpha brain waves are associated with several cognitive benefits, including:
- Wakeful relaxation: A state of calm clarity without sedation
- Enhanced creativity and free-form cognitive exploration
- Reduced anxiety and improved mood balance
In addition to raising Alpha brain waves, L-Theanine has been suggested to:
- Support dopamine, GABA and serotonin brain chemicals for a calm, motivated state of mind;
- Blunt excitatory brain chemicals to tone down an overstimulated central nervous system (CNS);
- Support blood pressure and heart rate in normal range, reflecting its overall CNS-relaxing effects.
Stim L-Theanine enhances caffeine to promote calmer, cleaner stimulation that is precision-tuned for peak human performance.
Performance Lab® Stim Suntheanine® is 100% pure, nature-identical L-isomer-Theanine clinically shown to raise Alpha brainwaves. Suntheanine® is protected by 40+ nutritional technology patents. Stim’s 100 mg Suntheanine® supplies L-Theanine equivalent to what is found in 10 cups of green tea.
Ajipure® L-Tyrosine, 250 mg
Caffeine works by blocking adenosine, a depressant hormone that signals for fatigue and drowsiness. This initiates a cascade of stimulatory catecholamine neurotransmitters that produce caffeine’s familiar psychostimulant effects:
- Dopamine – Pleasure, attention, motivation, reward
- Norepinephrine – Vigilance, focus, alertness, awareness
- Epinephrine (adrenaline) – Energy rush, heart rate, muscle strength
Concern: Caffeine stimulation increases demand on catecholamines. Low catecholamine levels are linked with attention problems, mood imbalance, short-term crashing and long-range exhaustion.
L-Tyrosine helps by supporting the synthesis and recycling of catecholamine neurotransmitters that are most impacted by caffeine.
L-Tyrosine also enhances caffeine stimulation with research-backed cognitive benefits for:
- Working memory
- Thinking under fatigue
- Multitasking performance
- Stress resistance
These benefits appear to be more pronounced in challenging scenarios like sleep deprivation and overwork – matching well with many caffeine users’ needs.
Stim L-Tyrosine restores caffeine-depleted neurotransmitters, regulates caffeine triggered stress hormones, and supports clarity during chaos, distraction and fatigue.
Performance Lab® Stim Ajipure® L-Tyrosine uses patented, eco-friendly Ferment-A-Pure technology to turn non-GMO and gluten free vegetable-derived carbohydrates into clean, bioavailable amino acids.
NutriGenesis® Caffeine Balance B-Complex
Caffeine’s diuretic effect may accelerate excretion of some vitamins and minerals. In one study, researchers linked coffee consumption with mild reductions in B-Vitamins Riboflavin, B6, Folate and B12:
Concern: Caffeine may deplete essential B-Vitamins that support the healthy nervous system function, energy metabolism, and brain chemicals that drive a peak-performing stimulated state:
- Folate – Supports serotonin, norepinephrine and dopamine
- Vitamin B6 – Supports serotonin and norepinephrine; dopamine conversion
- Riboflavin – Supports cell energy production and Vitamin B6 conversion
- Vitamin B12 – Supports dopamine and serotonin
Stim counterbalances caffeine depletion with Vitamins B9, B6, B2 and B12 as high-absorption NutriGenesis®.
Performance Lab® NutriGenesis® B-Vitamins are complexed with cofactors that enhance absorption. NutriGenesis® bioavailability advantages are ideal for reversing caffeine-induced nutrient depletion.
Stim can help anyone seeking to enhance their overall performance and life vitality in a healthier way than traditional stimulants.
Take 1 capsule for stimulation. Taken as directed, Stim’s 50 mg caffeine serving size is effective for most. Those with greater tolerance or a higher optimal caffeine dose may take additional Stim NutriCaps® in 50 mg caffeine increments up to 250 mg (5 NutriCaps®) per day, due to the formula’s scalable design.
Like all Performance Lab® supplements, Stim is designed to be safe for long-term daily use. Stim achieves this with advanced formulation and stacking strategies that actually enhance caffeine, for safer, better-tolerated stimulant activity along with superior performance-enhancing stimulant benefits. Stim’s clean design – free of GMOs, gluten, soy, colorants, preservatives and other additives – is also well-tolerated by the body; safe and beneficial for long-term use.
Yes. Stim is a safe, natural and 100% legal way to stimulate both body and mind.
More is not always better. High doses of caffeine can be counterproductive for human performance, triggering side effects that can make you shaky, irritable and unbalanced. Performance Lab® Stim’s 50 mg of caffeine per serving is conservative by design, supplying equivalent caffeine between a cup of green tea and a cup of coffee. With this approach, Stim helps you identify and manage your own optimal caffeine dose for superior performance benefits, whether you are taking it on its own or stacked with other caffeine sources.
30-Day Performance Promise
Your first order of any Performance Lab® product is covered by our 30-day performance promise.
Put Performance Lab® Stim to the test for a full 30 days and if you don’t see results, we’ll refund your money. No questions asked.
Simply get in touch with a member of our Customer Care team to arrange the return of the empty bottle, and any unused bottles.
The Performance Lab® Performance Promise covers one box of any of our products, up to a maximum of three products per order.
Stim stacks well with…
Stim + Energy
Stim is a stimulant-driven vitality formula with performance-enhanced caffeine. Energy is a stimulant-free vitality formula that works on a cellular level.
Combining Stim + Energy gives you the best of both worlds.
Take Stim + Energy together for a clean, balanced mind-body power surge that enhances performance across all athletic, cognitive and productive endeavors.
Stim + Mind
Mind is a caffeine-free nootropic for performance-driven cognition.
If you prefer caffeine with your nootropic, Stim supplies it in ultramodern form for clean, balanced and productive stimulation.
Take Mind + Stim to promote energized alertness that is clean, clear and calibrated for sharp cognitive function.
Stim + Vision
Stim performance-enhanced caffeine promotes vigilance and energy.
Vision adds on novel support for visual reaction time, motion detection and dark adaptation.
Take Vision + Stim together as an effective stack for all activities that benefit from calm alertness, sharp eyesight and quick reaction time.
Stim + Pre
SPORT Pre is a stim-free pre-workout formula. If you prefer caffeinated exercise, SPORT Pre may be augmented with Stim.
Delivering performance-enhanced caffeine plus brain chemistry support, Stim stacks seamlessly with SPORT Pre to power you through training and competition with greater intensity and fewer caffeine-related side effects.
Stim + Burn
SPORT Burn is a stim-free fat loss supplement. For those who prefer stimulation, SPORT Burn stacks perfectly with Performance Lab® Stim.
Stim’s performance-enhanced caffeine can be added to SPORT Burn in 50 mg increments, giving you more precise control over your intake.
Add Stim to SPORT Burn to get caffeine’s thermogenic and energizing weight loss benefits in a highly effective form.
The research and studies behind Performance Lab® Stim.