How much caffeine is in OxyShred? (and every other fat burner we stock)

Standard OxyShred lists roughly 150mg of stimulants per serve on recent labels, about the same hit as a large coffee or a moderate pre-workout scoop, and the Hardcore version runs materially higher. Formulas get revised, so treat the tub in your hand as the authority. The more useful question is the one people are really asking: how much stimulant is in my fat burner, and does it stack safely with my coffee and pre-workout? That maths matters more than the brand name on the tub.

OxyShred is the best-known thermogenic in this part of the world, which is why its caffeine content is one of the most-searched supplement questions in NZ. Whether you take OxyShred or any other burner, the framework below is how to place it in your day without accidentally doubling your stimulant load.

Caffeine per scoop, flavour by flavour

The question we get most often is whether one flavour hits harder than another. It does not. Flavours inside a thermogenic line share one base formula, so the stimulant load is the same whether you drink Cosmic Blast or Mango, and the flavour name only changes the taste.

Here is the current OxyShred range, tub by tub. Every tub in the range lists 150 mg of caffeine per scoop on its product page, so the flavour you pick changes the taste, not the dose. Check the panel on the tub you order if a new batch changes the formula.

Two things worth noticing in that table. The serve count is 60 across the range, which is why a tub lasts a long time compared with a pre-workout, and the tub weight moves slightly between flavours because the flavour system weighs a little more or less. Neither changes the stimulant per scoop.

The other thing it should tell you is that flavour hunting is a taste exercise, not a strength exercise. If you want a stronger or milder hit, you change the product or the serve size, not the flavour. For the taste side, see OxyShred flavours, ranked.

Fat burner caffeine in context

The commonly cited healthy-adult guideline is about 400mg of caffeine a day from all sources. One thermogenic serve, one coffee and one pre-workout scoop can clear that before lunch, which is exactly how people end up wired, anxious and wondering why they cannot sleep on a diet.

The honest bit: caffeine is most of what a burner does

Strip the proprietary blends out of most thermogenics and the ingredient doing measurable work is caffeine: it nudges energy expenditure slightly, blunts appetite a little and makes training on low calories feel less grim. The exotic supporting cast, green tea extract, carnitine and friends, contributes marginally at best in controlled research.

That is not a reason to feel scammed; it is a reason to buy stimulants deliberately. A fat burner cannot out-argue a food budget. The deficit does the fat loss, protein protects the muscle as the weight-loss protein guide covers, and the burner mostly makes the process feel more energetic. If a product promises more than that, the label is writing cheques the ingredients cannot cash.

Stacking rules for a cut

• Count the thermogenic serve in the same daily ledger as coffee, cans and scoops.
• Do not take a burner and a full pre-workout for the same session; pick one and halve if unsure. The pre-workout caffeine table shows what each tub already delivers.
• Keep all stimulants out of the six hours before bed. Bad sleep raises hunger hormones and sinks diets faster than any burner lifts them.
• Start at half serves. Cutting on low calories lowers stimulant tolerance for many people.
• Anxiety, heart conditions, blood pressure issues or pregnancy: skip the category and talk to a clinician. Our guide to OxyShred side effects and limits covers this in more detail.

A tub of 60 serves also gives you room to run half scoops for a fortnight and see how you sleep before you commit to full ones. That is a cheaper experiment than buying three different burners. Our guide on how to take OxyShred covers timing and serves in more detail.

The stim-free route that gets ignored

Half the fat-burner category is not caffeinated, and on a cut where sleep is precious those options deserve a look. The current weight management range stocks stim-free staples like EHPlabs Acetyl L-Carnitine, CLA options from GAT and Ronnie Coleman, and caffeinated burners like CBUM Essential Fat Burner and Pharmafreak Ripped Freak for people who want the kick included. If carnitine is on your list, see our guide to L-carnitine timing and dose.

A workable split: run your caffeine through products where the dose is printed and predictable, coffee or a measured pre-workout, and keep any burner you add stim-free so the two never fight. Evening trainers can borrow the same trick from the stim-free pre-workout guide.

Cutting and want the stimulant maths done properly? Check every label in your stack against the caffeine bands guide, browse the weight management range for the stim-free supports, and let the stack finder sanity-check the whole routine. Shipping is free on New Zealand orders over $70. The deficit does the losing; the stack just has to stay out of your sleep's way.

FAQ

How much caffeine is in OxyShred Cosmic Blast?

Flavours within a thermogenic line share the same base formula, so Cosmic Blast carries the same stimulant load as the other standard OxyShred flavours, roughly 150mg per serve on recent labels. Always confirm on the current tub, because brands revise formulas without fanfare.

Do OxyShred flavours have different caffeine amounts?

No. The flavours in the standard line share one base formula, so the stimulant content does not change between Mango, Gummy Snake and the rest. What does change is the version you buy, since a Hardcore style formula runs materially higher than the standard one.

Is OxyShred stronger than coffee?

A standard serve sits in the same band as a large coffee, though it can feel stronger because thermogenics combine caffeine with other stimulatory ingredients on an empty stomach. Hardcore versions are meaningfully stronger than any normal coffee.

Can you take OxyShred and pre-workout together?

Not recommended for the same session: the combined stimulants of a burner plus a 300mg-plus scoop can pass the daily 400mg guideline in one hit. Choose one caffeinated product per session and keep the other stim-free.

Do fat burners work without exercise?

No product meaningfully burns fat on its own. A calorie deficit drives fat loss; burners mainly add caffeine-driven energy and mild appetite blunting to make the deficit easier to hold. Training and protein decide what the lost weight is made of.

Sources and health note

• FDA guidance on daily caffeine amounts
• Australian Institute of Sport supplement framework

This is general information, not medical advice, and label figures for third-party products reflect recent published formulations rather than a live guarantee; always read the tub you buy. Anyone pregnant, under 18, or managing heart, blood pressure or anxiety conditions should avoid stimulant fat burners and seek clinical guidance. Range details checked 7 September 2026.

If you are comparing caffeine labels across training products, browse pre workout NZ. Check the serving size attached to each caffeine entry and read the directions before choosing a formula for your routine.