By Athletes - For Athletes
Fuel your day with our Lean Whey Protein – made from 100% natural ingredients, locally sourced in South Australia. High protein, low sugar, no fillers – just pure, effective nutrition made for athletes, by athletes.
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Plant Protein
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Creatine Monohydrate
Our Unflavored Creatine Monohydrate is clean, effective, and scientifically backed to support strength, performance, and recovery—without any fillers, flavors, or fuss. Just one ingredient. All results.
"Honest take - very impressed. A super smooth mix with a genuine chocolate smoothy taste. Happy to say this is my go-to protein now, and impressed at its simplicity yet effectiveness with natural ingredients."
Luke - Personal Trainer
"Playing as a professional athlete, there is always worry at the back of my mind with doping and hidden ingredients in supplements. Being entirely honest incorporating OneOnly into my diet has been not only a benefit to my body, but also a massive stress relief. All my focus is now into football because there’s no need to worry about additives. Thankyou OneOnly."
Mohammad Hussan - Adelaide United
"I’ve been vegan for four years, and it’s been a challenge finding a protein blend that’s clean, effective, and free from unnecessary additives—until now. I’m genuinely thrilled to have discovered OneOnly. It’s a blend I trust because I know exactly what I’m putting into my body. I’m beyond impressed and have already started recommending it to my clients."
Millie - Pilates Instructor
"In sprinting, recovery is just as important as training—and that’s where protein matters. OneOnly has been a reliable part of my routine, giving me clean, effective fuel without any of the usual junk. It’s a brand I can trust without worrying about doping, so I recommend if your serious about your development and sport. Thankyou OneOnly."
Ian - Sprinter
"Loving the whey protein, great for the gym and even tastes good in water. So happy with it and recommended to many of my friends and family."
Louis – Physiotherapist in Practice
"So so pleased with the taste and texture of this protein! It’s been so versatile for me and has been a huge booster in helping me hit my protein goals. Would highly recommend especially for a plant-based product, definitely lives up to the hype!!"
Frankie – Personal Trainer
"Loving OneOnly big time. I have recommended it to my family and friends they all think the same. I really appreciate how quick they processed orders and got me my protein asap. They even hand delivered the first few orders :"
Luca – Athlete & Model
"I have loved using Oneonly’s protein for the last few weeks. It’s great to know what you’re putting in your body from people you can trust, would recommend highly!"
Shalin – Semi-Professional Soccer Player