Dark Labs Barbarian vs Kj Labs Doomsday Comparison
See a side-by-side comparison of ingredients, stats, and community sentiment.
Dark Labs Barbarian is a highly popular extreme pre-workout with 475mg of caffeine and a potent DMHA/DMBA blend, while Kj Labs Doomsday offers a similar exotic stimulant profile with slightly less caffeine and lower community visibility.
Go with Dark Labs Barbarian if...
- •You want a higher caffeine content of 475mg for maximum energy
- •You prefer a product with significantly higher community popularity and mentions
- •You are looking for a proven DMHA and DMBA combination from a well-known brand
Go with Kj Labs Doomsday if...
- •You prefer a slightly lower caffeine dose of 400mg while still maintaining extreme intensity
- •You are interested in trying a niche, powerful stimulant blend from Kj Labs
- •You prioritize a specific 'fire' stimulant feeling over brand popularity

Dark Labs Barbarian
dark labs

Kj Labs Doomsday
kj labs
Dark Labs Barbarian
Kj Labs Doomsday
Where to Buy Dark Labs Barbarian
NutriCartel
Get 15% off your order
Cross The Limits
Ruesco
Where to Buy Kj Labs Doomsday
NutriCartel
Get 15% off your order
Ruesco
Where to Buy Dark Labs Barbarian
NutriCartel
Get 15% off your order
Cross The Limits
Ruesco
Where to Buy Kj Labs Doomsday
NutriCartel
Get 15% off your order
Ruesco
Ingredient Label
Ingredient Label
Pros
- Barbarian delivers strong, effective results, often described as a 'hitter' that 'slaps' and helps power through intense workouts like leg day.
- Users appreciate its stimulant profile, particularly the 'immaculate DMBA bubble' and the combination of DMHA and DMBA.
- It is often preferred over other Dark Labs products and is considered one of their best offerings, especially the original batches.
- The product can be effectively stacked with other supplements for enhanced effects.
Cons
- A drawback of Barbarian is the perceived inconsistency in quality and formulation across different batches, with newer versions often being less potent than the original runs.
- Some users report that newer batches can have short-lived effects, 'fizzling out' quickly, leading to an uneasy feeling and crash without significant positive effects.
- There is user dissatisfaction with Dark Labs' 'copy and paste labels,' suggesting a lack of transparency or innovation in product development.
Pros
- Doomsday delivers a powerful and effective stimulant experience, with some users describing it as "fucking fire."
- It is recognized for its potent blend of stimulants, including DMHA and DMBA, appealing to those seeking strong effects.
- Users report good training sessions and a unique, specific feeling from the original formula.
- It is considered effective and "hits" well by experienced users.
Cons
- A drawback of Doomsday is that its formula has reportedly changed over time, leading to a perceived decrease in quality and effectiveness in newer versions.
- Some users have experienced a milder effect than anticipated, followed by post-workout crash and anxiety.
- Flavor is described as only "Ok," and the overall experience may not always live up to the bold claims or user expectations, with some effects like euphoria/focus being mild.
Comparison Summary
Dark Labs Barbarian features a higher caffeine content and greater market popularity compared to Kj Labs Doomsday, though both utilize exotic stimulants like DMHA and DMBA. Dark Labs Barbarian is aimed at users seeking a widely-vetted extreme stimulant experience, whereas Kj Labs Doomsday targets experienced users looking for a potent, niche alternative.
Key Differences:
- Caffeine Content: Dark Labs Barbarian (475 mg) vs Kj Labs Doomsday (400 mg)
- Popularity: Dark Labs Barbarian (High community presence with 94 mentions) vs Kj Labs Doomsday (Lower community presence with 34 mentions)
- User Feedback: Dark Labs Barbarian (Noted for being a 'hitter' for leg days but faces batch inconsistency) vs Kj Labs Doomsday (Noted for a 'fire' experience but can lead to post-workout anxiety)
Key Similarities:
- Product Level: Both products are classified as 'Extreme' intensity supplements.
- Stimulant Profile: Both products contain exotic stimulants, specifically including the combination of DMHA and DMBA.
- Formula Concerns: Both products have faced user criticism regarding formula changes or batch inconsistency over time.
- User Sentiment: Both products have high user sentiment.