Kj Labs Doomsday vs Herolean Fat Burner Comparison
See a side-by-side comparison of ingredients, stats, and community sentiment.

Kj Labs Doomsday
kj labs

Herolean Fat Burner
dark labs
Kj Labs Doomsday
Herolean Fat Burner
Where to Buy Kj Labs Doomsday
NutriCartel
Get 15% off your order
Ruesco
Where to Buy Herolean Fat Burner
NutriCartel
Get 15% off your order
Ruesco
Muscle Factory SC
Where to Buy Kj Labs Doomsday
NutriCartel
Get 15% off your order
Ruesco
Where to Buy Herolean Fat Burner
NutriCartel
Get 15% off your order
Ruesco
Muscle Factory SC
Ingredient Label
Ingredient Label
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.
Pros
- Herolean Fat Burner delivers strong, clean, non-jittery energy that intensifies with training, leading to a high-rated workout experience.
- Users report a smooth initial hit and a clean come-down with no crashes or interference with sleep.
- It is considered a hard-hitting product, effective for intense workouts and cardio sessions.
- Contains Alpha Yohimbine, an ingredient favored by some users for its stimulant and thermogenic properties.
- May induce a significant thermogenic effect, helping to 'heat you up' during workouts.
Cons
- A drawback of Herolean Fat Burner is its extreme potency, which can lead to uncomfortable or 'hellish' experiences for some users, even at very low doses.
- Some users report significant negative side effects, such as an elevated heart rate while stationary and feeling unwell or 'like a corpse'.
- It may not be effective or 'nothing special' for all users, with some disliking it enough to sell it.
- There are concerns among users about potential downgrades or inconsistencies in newer versions compared to the original formula.
Comparison Summary
Kj Labs Doomsday provides a powerful stimulant experience with 400mg of caffeine, while Dark Labs Herolean Fat Burner offers 425mg of caffeine and focuses on strong, clean energy with significant thermogenic effects. Both products contain exotic stimulants and have faced user concerns regarding formula consistency. Kj Labs Doomsday targets users seeking a potent, specific stimulant blend, whereas Dark Labs Herolean Fat Burner is for those who desire intense, clean energy and thermogenic properties but must be prepared for its extreme potency.
Key Differences:
- Caffeine Content: Kj Labs Doomsday (400 mg) vs Herolean Fat Burner (425 mg)
- Primary User Experience / Focus: Kj Labs Doomsday (Delivers a powerful stimulant experience with a unique feeling, including DMHA and DMBA, appealing to those seeking strong effects.) vs Herolean Fat Burner (Provides strong, clean, non-jittery energy that intensifies with training, significant thermogenic effects, and contains Alpha Yohimbine.)
- Common User Complaints / Side Effects: Kj Labs Doomsday (Formula changes leading to perceived decrease in quality, post-workout crash and anxiety, and mild euphoria/focus.) vs Herolean Fat Burner (Extreme potency leading to uncomfortable or 'hellish' experiences, elevated heart rate, and feeling unwell.)
Key Similarities:
- Exotic Stimulants: Both products contain exotic stimulants.
- Overall Potency: Both are considered hard-hitting and effective by many users.
- Formula Consistency Concerns: Both products have user concerns about potential downgrades or inconsistencies in newer versions compared to original formulas.
- User Sentiment: Both products have fair to high user sentiment.