I Am Immortal High Stim Pre-Workout
Couldn't load pickup availability
See it in action
Best pre-workout I've ever used. Clean energy, no crash, and the pumps are insane. Won't use anything else.
California Proposition 65 WARNING
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.
A Proposition 65 warning does not mean this product is unsafe or out of compliance. California requires these notices at exposure thresholds far stricter than federal FDA and USP limits.
Pairs Well With
You'll Love This Pre-Workout
You'll Love This Pre-Workout
Layered Energy
Caffeine from three sources: caffeine anhydrous, zümXR and Infinergy. For experienced users only.
Focus
10g L-tyrosine per scoop, to help support focus. Also 1g choline bitartrate.
Pumps
10g L-citrulline, to help support nitric oxide and blood flow.
Endurance
6.4g beta-alanine, which may help support muscular endurance with daily use.
Transparency by the numbers
Transparency by the numbers
Beta-Alanine
Per scoop, for high-intensity sets.
L-Citrulline
Free-form L-citrulline in every scoop.
L-Tyrosine
Per scoop, alongside 1g choline bitartrate.
* Based on post-purchase surveys and manufacturer data.
Berserker vs Generic Pre-Workouts
Berserker vs Generic Pre-Workouts
We only carry brands that meet our strict quality standards. No fillers, no proprietary blends, no shortcuts.
|
Berserker
Complete Health pick
|
Generic Pre-Workout
Budget
|
|
|---|---|---|
|
Caffeine Sources
| Anhydrous + zümXR + Infinergy | Varies by brand |
|
L-Citrulline Dose
| 10g L-citrulline | Varies by brand |
|
L-Tyrosine Dose
| 10g L-tyrosine | Varies by brand |
|
Extended-Release Caffeine
| ||
|
AstraGin
| ||
|
6.4g Beta-Alanine
|
OUR CHAMPIONS
Keep Coming Back
Pre-Workout FAQs
Got questions? We've got answers — plus free consultations at both Fort Wayne locations.
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.
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.
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.
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.
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.
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.
