The NZ Supps Journal

Straight Answers, No Bro-Science

Plain-English guides on what actually works, what does not, and why.

Is Glycerol Safe? (And Why It Fuels Bigger Pumps)

Is Glycerol Safe? (And Why It Fuels Bigger Pumps)

Glycerol is safe for most healthy lifters, and it's one of the few pump ingredients that physically pulls water into the muscle for fuller, longer pumps. Here's how to run...

Aug 13, 2026 Read article

Is Glycerol Safe? (And Why It Fuels Bigger Pumps)

Is Glycerol Safe? (And Why It Fuels Bigger Pumps)

Glycerol is safe for most healthy lifters, and it's one of the few pump ingredients that physically pulls...

Is Citrulline Safe?

Is Citrulline Safe?

Citrulline is about as safe as pre-workout ingredients get: no stim, no crash, and only mild gut upset...

Is Synephrine Safe?

Is Synephrine Safe?

Synephrine (bitter orange) is a mild stimulant that turns risky the moment it's stacked with caffeine. Here's the...

Is Yohimbine Safe? What You Should Know

Is Yohimbine Safe? What You Should Know

Yohimbine promises fast fat loss, but it's one of the most aggressive stimulants going and it isn't for...

Is DMHA Dangerous? An Honest Look

Is DMHA Dangerous? An Honest Look

DMHA (octodrine) was one of the harshest stimulants ever to hit a pre-workout label. Here's an honest look...

How Taurine Supports Endurance and Hydration

How Taurine Supports Endurance and Hydration

Taurine is the quiet endurance-and-hydration ingredient in your pre-workout. Here's how it volumises muscle cells, supports calcium handling...

How Alpha-GPC Sharpens Your Mind-Muscle Connection

How Alpha-GPC Sharpens Your Mind-Muscle Connection

Alpha-GPC is the focus ingredient in a lot of pre-workouts for a reason: more acetylcholine means a sharper...

How L-Theanine Smooths Out Caffeine

How L-Theanine Smooths Out Caffeine

L-theanine is the amino acid that smooths out caffeine. Here's how it turns jittery pre-workout energy into calm,...

How L-Tyrosine Keeps You Locked In

How L-Tyrosine Keeps You Locked In

L-tyrosine is the amino acid that feeds dopamine and noradrenaline, so your focus holds up when a hard...

How Betaine Builds Strength and Power

How Betaine Builds Strength and Power

Betaine anhydrous quietly supports strength and power by hydrating your cells and donating methyl groups. Here is the...

How Caffeine Actually Powers Your Workout

How Caffeine Actually Powers Your Workout

Caffeine doesn't hand you energy. It blocks the fatigue signal so effort feels easier and you get more...

How Citrulline Gives You a Better Pump

How Citrulline Gives You a Better Pump

Citrulline is the ingredient behind that skin-splitting pump. Here's how it works, the dose that actually delivers, and...

How Beta-Alanine Boosts Muscular Endurance

How Beta-Alanine Boosts Muscular Endurance

Beta-alanine is the muscular-endurance ingredient in your pre-workout. Here's the real mechanism — carnosine buffering acid — why...

Is Pre-Workout Dangerous? An Honest Safety Guide

Is Pre-Workout Dangerous? An Honest Safety Guide

For a healthy adult sticking to the label dose, a well-made pre-workout is low-risk. We go ingredient by...

Every Pre-Workout Question, Answered

Every Pre-Workout Question, Answered

Your one-stop pre-workout FAQ. Straight answers on what it does, when to take it, caffeine, sleep, tingles and...

The Pre-Workout Cheat Sheet

The Pre-Workout Cheat Sheet

Bookmark this one. Every common pre-workout ingredient, what it does, the dose that actually works, how to spot...

Will Pre-Workout Ruin Your Sleep?

Will Pre-Workout Ruin Your Sleep?

Caffeine has a five-to-six-hour half-life, so a late scoop can absolutely keep you up. Here's the simple timing...

Pre-Workouts Ranked by Intensity: Find Your Stim Tier

Pre-Workouts Ranked by Intensity: Find Your Stim Tier

Pre-workouts sorted into four intensity tiers — mild, moderate, strong and extreme — so you can pick your...

The Best Pre-Workout for Beginners: 3 Forgiving Picks

The Best Pre-Workout for Beginners: 3 Forgiving Picks

New to pre-workout? These are the three forgiving tubs we'd actually hand a first-timer: sane caffeine, a clean...

The 3 Customer-Favourite Pre-Workouts Kiwis Keep Reordering

The 3 Customer-Favourite Pre-Workouts Kiwis Keep Reordering

There's no voting booth here — just real sales. These are the three pre-workouts NZ lifters keep reordering,...

A cup of coffee and a pre-workout shaker side by side on a kitchen bench

"My experience with pre-workout and why my assumptions were wrong" - a customer story

A customer was sure pre-workout would wreck their sleep. Harder training proved the assumption backwards. Their story, plus...

Cellucor C4 Original Grape pre-workout beside a long black coffee and purple shaker in a home kitchen

Pre-Workout vs Coffee: Which Is Better Before the Gym?

Coffee and pre-workout both work before the gym because they share the same active ingredient. A long black...

Pre-workout tubs compared for beta-alanine content - Per4m, Yeah Buddy, C4 Original, Basic PRE and Nexus

Beta-Alanine in Pre-Workout: How Much Each NZ Tub Packs

Per-scoop beta-alanine doses for every pre-workout we stock, what the ingredient does, and how to dose it if...

High-stim pre-workout tubs available in NZ - Per4m, Ryse Godzilla, Yeah Buddy Xtreme and Per4m Grape Xplosion

Strongest Pre-Workout in NZ: Every High-Stim Tub Ranked by Caffeine

The strongest pre-workouts sold in NZ, ranked by caffeine per scoop from label data. From Gaspari Plasmajet at...

Cellucor C4 Original 50-serve tub with a scoop of purple powder next to Nexus PER4M and C4 Sport pre-workouts

Cheap Pre-Workout NZ: Best Value Per Serve Right Now

The best value cheap pre-workout in NZ right now is Cellucor C4 Original at $1.50 a serve. Here...

Cherry-red pre-workout powder dissolving in a glass with a Ghost Legend All Out tub behind, showing beta-alanine drink mixing

Why Does Pre-Workout Make You Tingle? Beta-Alanine Explained

The tingling from pre-workout is beta-alanine, a harmless temporary skin sensation. Here is what causes it and which...

Open Cellucor C4 Sport tub with a partial scoop of blue raspberry pre-workout, water and a shaker for a first-time user

Your First Pre-Workout: A No-Hype Starter Guide

New to pre-workout? Start with half a scoop of a moderate tub. A no-hype guide to your first...

Ghost Pump, Raw Nutrition Pump and Nexus L-Citrulline stim-free pre-workouts with a shaker of mixed drink

Stim-Free Pre-Workout NZ: What Actually Works Without Caffeine

Stim-free pre-workout skips the caffeine and leans on pump and focus ingredients. Here is what it delivers and...

Tea, coffee, a Ghost Energy can and a pre-workout shaker lined up, comparing caffeine sources

How Much Caffeine Is in Pre-Workout? NZ Tubs Compared

Pre-workout caffeine content in NZ runs from 130mg to 420mg a serve. Here is how the moderate, strong...

Ghost Energy can next to a shaker of pre-workout mix in a gym, comparing energy drink and pre-workout before training

Energy Drink vs Pre-Workout: Which One Before Training?

Canned energy drink or dosed pre-workout powder: the real difference in caffeine, ingredients and convenience, with real NZ...

Tea, coffee, a Ghost Energy can and a shaker side by side, comparing caffeine strength across drinks

Caffeine Bands Explained: How Strong Is Your Energy Drink?

NZ energy drink caffeine bands from light to max, mapped to real cans and mg counts stocked at...

Ghost Pump and Ryse pre-workout tubs

Pump vs stim pre-workout: what's the actual difference?

Stim pre-workout wires you up. Pump pre-workout floods the muscle. Here's when to use each.

CBUM Essential pre-workout with scoop and shaker

How do you know if you should be taking pre-workout?

Pre-workout is a tool, not a requirement. Here's how to tell if it's for you.