87% of customers also add...
Loading...
I Am Immortal
Immortal High Stim Pre-Workout (Berserker) | High-Stim Energy + Focus + Pumps
⭐
600mg+ Total Caffeine
🏆
10g L-Citrulline
✨
10g L-Tyrosine
$59.95
Save $8.99 in Cart
Free Creatine Eligible
10g L-Citrulline for Maximum Nitric Oxide Production and Workout Pumps
Triple-Source Caffeine (Anhydrous + ZumXR + Infinergy) for Layered, Crash-Free Energy
10g L-Tyrosine + 1g Choline Bitartrate for Sustained Mental Focus Under Fatigue
6g Beta-Alanine (Double Standard Dose) for Extended Muscular Endurance
Choose your quantity
Couldn't load pickup availability
Quality Guaranteed
Same-Day Pickup Available
Most loved
See it in action
Marcus T.
Best pre-workout I've ever used. Clean energy, no crash, and the pumps are insane. Won't use anything else.
You'll Love This Pre-Workout
You'll Love This Pre-Workout
Relentless Energy
Triple-source caffeine system (Anhydrous + ZumXR + Infinergy) layers fast, sustained, and extended energy across your session.
Laser Focus
10g L-Tyrosine plus 1g Choline Bitartrate fuels dopamine and acetylcholine for dialed-in mind-muscle connection.
Maximum Pumps
10g pure L-Citrulline (not malate) drives peak nitric oxide for skin-splitting vascularity and fullness.
Double-Dosed Endurance
6g Beta-Alanine, nearly 2x the standard dose, buffers fatigue so you outlast every set.
Transparency by the numbers
Transparency by the numbers
0mg+
Total Caffeine
Triple-source caffeine from Anhydrous, ZumXR extended-release, and Infinergy dicaffeine malate.
0g
Pure L-Citrulline
Massive dose of free-form citrulline (not citrulline malate) for maximum nitric oxide output.
0g
L-Tyrosine
One of the highest tyrosine doses on the market for sustained focus and cognitive drive.
* Based on post-purchase surveys and manufacturer data.
Immortal High Stim Vs. Generic Pre-Workout
Immortal High Stim Vs. Generic Pre-Workout
We only carry brands that meet our strict quality standards. No fillers, no proprietary blends, no shortcuts.
|
Immortal High Stim
CHN Approved
|
Generic Pre-Workout
Budget
|
|
|---|---|---|
|
Total Caffeine
| 600mg+ Triple-Source | 200-300mg Single Source |
|
L-Citrulline Dose
| 10g Pure L-Citrulline | 3-6g Citrulline Malate |
|
L-Tyrosine Dose
| 10g Mega-Dose | 500mg-1g If Any |
|
Extended-Release Caffeine
| ||
|
AstraGin Absorption
| ||
|
6g Beta-Alanine
|
Complete Your Pre-Workout Stack
These products pair perfectly with your pre-workout
OUR CHAMPIONS
Keep Coming Back
/5
based on
1,649
verified reviews
Pre-Workout FAQs
Got questions? We've got answers — plus free consultations at both Fort Wayne locations.
How much caffeine is in this pre-workout?
+
Caffeine content varies by product — check the supplement facts panel for the exact amount. Most of our pre-workouts range from 150mg to 350mg per serving. If you're caffeine-sensitive, we also carry stim-free options.
When should I take my pre-workout?
+
Take 20-30 minutes before your workout for optimal absorption and performance. Avoid taking within 6 hours of bedtime to prevent sleep disruption. For evening athletes, a stim-free pump formula is a great option.
Can I stack pre-workout with creatine?
+
Absolutely — pre-workout and creatine is one of the most popular and effective stacks in the industry. Just check if your pre-workout already contains creatine so you don't accidentally double your dose. Our staff can help you build the perfect stack.
Why do I feel tingling or itching after taking pre-workout?
+
That's beta-alanine doing its job! The tingling sensation (paresthesia) is harmless and a sign the beta-alanine is working to buffer lactic acid in your muscles. It typically fades after a few weeks of consistent use.
Is this pre-workout safe to take every day?
+
Most pre-workouts are safe for daily use, but we recommend cycling — 5 days on, 2 days off — to maintain stimulant sensitivity. Taking breaks also helps prevent tolerance buildup. Our staff can advise on the right cycling protocol for your specific product.
Do you carry stim-free pre-workout options?
+
Yes! We carry several stimulant-free pump formulas that deliver incredible vascularity and endurance without any caffeine. Great for evening training or stacking on top of your regular pre-workout. Ask our staff for recommendations.
