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Comp prep is a grind. You are eating less, training hard, and trying to walk on stage or step on the platform looking lean while still holding your muscle and strength. The right supplements will not do the work for you, but they make the deficit easier to survive and help protect what you have built. Here is an honest stack for cutting, with no magic promises.
The short answer
- Protein: the number one priority for holding muscle and staying full.
- Creatine: keep it in to protect strength while calories are low.
- EAAs or intra: to protect muscle when you train in a deficit.
- Electrolytes: because low-carb eating and hard training flush sodium.
- A thermogenic or L-carnitine: an optional minor support, not a fat-loss shortcut.
One thing to be clear about: fat loss comes from the calorie deficit and your training. Nothing on this list burns fat for you. These just help you keep muscle and feel more human while you do the hard part.
Protein: the piece that matters most
When you cut, protein does two big jobs. It helps protect the muscle you are trying to keep, and it keeps you fuller on fewer calories. Protein needs actually go up in a deficit, so this is the last thing you should skimp on.
A lean, mixable whey makes hitting a higher target realistic. Ghost Whey tastes good enough to look forward to when the diet is bland. If you want a very light, low-calorie option to break up the day, Nexus Super Protein is a clear, sparkling collagen protein water. Compare more in the protein collection and the whey protein range.
Creatine: hold your strength
Cutting is exactly when people worry about losing strength. Keeping creatine in your routine helps you maintain training quality and power while calories are low, which protects muscle indirectly. You may see a little water weight, but that is not fat and it evens out.
EHPlabs Crea-8 is a simple unflavoured monohydrate at 5g a day. See the creatine collection for other formats.
EAAs: protect muscle in the deficit
Training hard on low fuel is when muscle is most at risk. Sipping EAAs around or during training gives your body the building blocks to hold onto muscle, which matters more the leaner you get. Many people also find EAAs make fasted or early sessions feel less rough.
Raw Nutrition EAA is a clean full-spectrum option. EHPlabs Beyond BCAA and EAA packs a lot of serves per tub. Both sit in the EAA and intra-workout collection.
Electrolytes: stay hydrated and functional
Cutting carbs and training more often means you lose extra sodium and fluid. That is why prep can leave you flat, tired and prone to cramp. An electrolyte mix helps you stay hydrated and keeps your energy steadier through the day.
Pillar Electrolyte Hydration Sticks are easy single serves. Ghost Hydration is a good-value tub. More in the electrolytes collection.
The optional extra: a thermogenic or L-carnitine
This one comes last on purpose. A thermogenic or L-carnitine can offer a small amount of support alongside a proper deficit and training, but it is not a fat burner in the sense of doing the work for you. If you want to add one, treat it as a minor tool, not the plan.
EHPlabs Acetyl L-Carnitine is a straightforward unflavoured option. You can see the wider get lean range if you want to browse, but keep your expectations grounded: the deficit is what moves the needle.
A sample cutting day
| Time | What to take |
|---|---|
| Morning | Creatine 5g, electrolytes if training fasted |
| Around training | EAAs during, protein after |
| Through the day | Protein spread across meals |
| Optional | L-carnitine or thermogenic as a minor support |
Consistency beats intensity here. Protein and creatine every day, EAAs and electrolytes to protect training, and honesty about what actually drives the cut.
Where NZ Supps fits
We carry every part of this stack and ship fast across New Zealand, with free shipping over $99. Not sure what fits your prep? The Find Your Stack quiz gives you a tailored shortlist in minutes.
For more detail, read why protein powder works so well when you are cutting and our pick of the best protein for cutting in NZ. If you are weighing amino options, EAA versus BCAA clears it up.
FAQ
What supplements help when cutting for a comp? Protein is the priority, then creatine to hold strength, EAAs to protect muscle when you train in a deficit, and electrolytes because low-carb eating flushes sodium. None of these burn fat on their own. Fat loss comes from the calorie deficit and training, and these supplements just help you keep muscle and feel better while you do it.
Do I need a fat burner to cut? No. A calorie deficit is what drives fat loss, not a fat burner. A thermogenic or L-carnitine can offer a little support alongside a good diet and training, but treat it as a minor extra, never a shortcut or a guarantee.
Should I keep taking creatine while cutting? Yes, this is a good time to keep it in. Creatine helps you hold onto strength and training quality while calories are low. You might notice a small amount of water weight, but that is not fat and it settles.
How much protein should I eat in a deficit? Protein needs go up when you cut because it helps protect muscle and keeps you full. Most people aim for the higher end of their usual range and spread it across the day. A shake or two makes hitting that target far easier when calories are tight.
Why do I need electrolytes when cutting? Lower carbs and higher training often mean you lose more sodium and fluid, which can leave you flat, tired and crampy. An electrolyte mix helps you stay hydrated and feel more normal through prep. It is a small thing that makes a big difference to daily energy.
