KJ Labs Doomsday Pre Workout
Kj Labs

Kj Labs Doomsday Pre Workout Reviews

Shop at NutriCartel$49.95

Get 15% off your order

15

Total Mentions

93%

Community Approval

11

Positive Mentions

Community Sentiment

11 Positive3 Neutral1 Negative
Full product information and reviews

Product Summary

Doomsday is a hard-hitting, high-stim pre for experienced stim users, best suited to long, hard sessions where you want both energy and a big pump. Energy comes from 372 mg of caffeine. It also contains 50 mg of DMHA and 300 mg of DMBA. It also carries a full pump dose: 6 g L-citrulline, which meets the at-least-6 g benchmark.

Pros

  • Five users consider it a hard hitter: “Doomsday regular for me is a hitter”.

Cons

  • Two users feel newer batches or US versions are weaker and disappointing.

NutriCartel

Ships from:🇺🇸 US
$49.95
In Stock
Updated 384d ago

Get 15% off your order

Shop at NutriCartel

Ruesco

Listed as: KJ Labs Doomsday

Ships from:🇺🇸 US
$3.00
In Stock
Updated 9h ago
Shop at Ruesco
Prices and availability updated automatically from retailer websites.

Video Reviews (3)

KJ Labs Doomsday: another super hitter from KJ Labs??

HammerstoneFeb 10, 2026

DOOMSDAY - BY KJ LABS - CAN THE MAKERS OF SMASH AMF, OXY MELT, AND PYRE GO 4/4 ON THE HITTERS??

Gym Dad FitnessApr 9, 2025

GUESS WHO'S BACK WITH A BRAND-NEW ILLICIT?! KJ Labs Doomsday Review ft. @Gymdadfitnessreviews

High Stim AceApr 5, 2025
Intensity Level
Extreme
Total Caffeine
372mg
Stimulant Profile
Loading stimulant data...

What does this level mean?

Maximum intensity warning! Contains exotic stimulants (DMHA, DMBA, DMAA) for experienced users only. Not for daily use – cycle with milder options throughout your week. Handle with respect.

Community Mentions (15)

Doomsday was awesome for me. I never tried hardcore. Doomsday was slight euphoria,it made me chill but gave me enough urge to go to gym, and lifting weights was easy. Loved it.

by u/100xtrade

positive
Aug 28, 2026

Doomsday was awesome for me. I never tried hardcore. Doomsday was slight euphoria,it made me chill but gave me enough urge to go to gym, and lifting weights was easy. Loved it.

by u/100xtrade

positive
Aug 28, 2026

What's fascinating to me: even today, after all this heavy abuse and such, a single scoop of Doomsday or a similar Pre. is usually more than enough to help me get the wanted amount of additional focus (as a nootropic) or energy (at the gym) or whatever it is i desire.

by u/kaze_san

positive
Aug 8, 2026

I finally tried it, I went 1 pill & half scoop doomsday and it felt good.

by u/morbidbidrom

positive
Jul 22, 2026

Now that Excelsior and its family (Doomsday Hardcore, Hydrazine, etc.) are basically dead I am scouring the internet for anything remotely similar without beta or Y.

by u/Senior_Low_9071

negative
Jul 6, 2026

I’ve recently got Mr white , Doomsday & had a sample of Goddamn fury sample I’d opt for Goddamn Fury if you want the biggest hitter.

by u/Kaizoku230

neutral
Jun 3, 2026

have you tried Dexter, Doomsday, or slice? Lavafuel?

by u/FukRehab

neutral
Jun 3, 2026

"Actually GOOD. Not “I’ll tolerate it” good."

by u/555nakmuay

positive
Feb 18, 2026

KJ Doomsday I have to do another run because I suspect my tolerance was fucked up when I ran it the first time.

by u/9six9

positive
Feb 11, 2026

"It came with no real drawbacks but the overall feeling felt more so like a decent energy experience with a side of something special."

by u/Hammerstone44

positive
Feb 10, 2026
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Ingredient Analysis

Label Score: 100/100

Ingredients

Serving Size1 Scoop (12.86g)
Servings Per Container25
IngredientDosage
L-Citrulline6,000 mg
Beta Alanine3,200 mg
Caffeine Anhydrous350 mg
Theobromine100 mg
Guarana Extract (22% Caffeine)100 mg
DMHA50 mg
DMBA300 mg
Phenyl Piracetam20 mg
GBB20 mg

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KJ Labs Doomsday Pre Workout FAQs

What are the effects of KJ Labs Doomsday Pre Workout?

Doomsday is a hard-hitting, high-stim pre for experienced stim users, best suited to long, hard sessions where you want both energy and a big pump. Energy comes from 372 mg of caffeine. It also contains 50 mg of DMHA and 300 mg of DMBA. It also carries a full pump dose: 6 g L-citrulline, which meets the at-least-6 g benchmark.

How much caffeine is in KJ Labs Doomsday Pre Workout?

KJ Labs Doomsday Pre Workout contains 372mg of total caffeine per serving.

What intensity level is KJ Labs Doomsday Pre Workout?

KJ Labs Doomsday Pre Workout is classified as Extreme intensity. This is a maximum intensity pre-workout containing exotic stimulants. It is designed for experienced users only and should not be used daily.

What do users say about KJ Labs Doomsday Pre Workout?

Based on 15 community mentions, KJ Labs Doomsday Pre Workout has an 93% community approval rating with 11 positive, 3 neutral, and 1 negative mentions.

Where can I buy KJ Labs Doomsday Pre Workout and how much does it cost?

KJ Labs Doomsday Pre Workout is available from retailers including NutriCartel, Ruesco. Prices range from $3.00 to $49.95 USD.

What are the pros of KJ Labs Doomsday Pre Workout?

Five users consider it a hard hitter: “Doomsday regular for me is a hitter”.

What are the cons or things to watch out for with KJ Labs Doomsday Pre Workout?

Two users feel newer batches or US versions are weaker and disappointing.