HEALTH
I Put First or Nothing's OneFit® to the Test,
Here's What Happened
Clean Tested Editor David Hall | Last Updated on October 1, 2025
SUPPLEMENT SPOTLIGHT
OneFit® Vs AG1
If There's One Skill I've Mastered Through Trial and Error, It's My Supplement Stack
Call it obsession or just the pursuit of feeling my best, but I’ve gone through every wellness phase. I had my AG1 streak, swearing by it every morning because it seemed like the smartest health move. And yes, I once had a supplement stash big enough to stock a small health shop.
The problem is there are endless powders on the market, all claiming to be the answer to total health. AG1 stood out as the benchmark in the space, with huge backing from people like Andrew Huberman and professional athletes. It works well as a daily safety net for vitamins, minerals, probiotics and adaptogens. But when it comes to training recovery, it leaves a gap.
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That’s what drew me to OneFit® from First or Nothing. At first I was skeptical, another scoop that claims to do it all? But the difference was clear. Instead of just greens, OneFit delivers 25 grams of collagen protein, 5 grams of creatine, electrolytes and recovery support. It’s built for performance, as well as wellness.
I stopped using AG1 completely because OneFit® covers everything I need in one mix. A world's first 31-in-1, for me, it’s no longer about chasing every new supplement trend, it’s about sticking with something simple that actually works and does it all.
A Little Background on OneFit®, Why It's More Than Just a Supplement
While First or Nothing may be the brand behind OneFit®, this product is driven by a commitment to science, transparency, and performance rarely seen in the wellness industry. OneFit® isn’t just another trendy protein or greens powder. It’s designed to replace a shelf full of individual supplements with a single, comprehensive formula. The team behind First or Nothing emphasises clinically relevant doses, high manufacturing standards, and rigorous third-party testing, including lab verification for banned substances through HASTA and NATA. It’s uncommon to see a supplement brand this thorough in ensuring both quality and safety, and it speaks to the integrity of the product.
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What sets OneFit® apart is its “31-in-1” approach. Each serve provides 25 grams of hydrolysed bovine collagen peptides as the protein source, 5 grams of creatine, electrolytes, essential vitamins and minerals, and additional ingredients to support hydration, recovery, joints, skin, hair, and overall performance. Unlike many other supplements that focus on just one or two benefits, OneFit® is formulated to cover virtually every aspect of post-workout nutrition and recovery.
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Manufactured in Australia to high standards and independently tested for purity, OneFit® ensures that each batch meets strict quality criteria. This level of transparency is rare in an industry often dominated by proprietary blends and in-house testing. For anyone looking to simplify their supplement routine without compromising effectiveness, OneFit® offers a single, reliable solution that truly delivers.
The Testing Process
I wanted to make sure each supplement got a fair shake, so I followed the same testing routine for both AG1 and OneFit®.
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Each morning, I prepared one of the powders in water. I was looking to see how easy it was to mix, how long it took to dissolve, and what it looked like after mixing.​
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I tracked my energy levels five times throughout the day: at 9am before taking the supplement, then at noon, 3pm, 6pm, and 9pm before bed.
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I reviewed the ingredients, scientific claims, certifications, and supporting research for both powders.
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And because taste matters, I enlisted my brutally honest wife as a second opinion. If she wrinkled her nose, I took note. Spoiler alert: she actually gave a rare thumbs-up to one of these powders. Keep reading to find out which one.
Spoiler Alert: OneFit® Was The Clear Winner
Here's why...
The Price: A Smart Investment in Your Health
At first glance, OneFit®'s price might feel like a premium choice. But when you break down what it would cost to buy all the supplements it replaces, the value becomes obvious. Between protein powders, creatine, BCAAs, collagen, electrolytes, and essential vitamins and minerals, I easily spent $250 to $300 a month just to cover post-workout recovery, energy, and overall wellness.
OneFit® combines all of these into a single, streamlined formula, giving me everything I need in one convenient product and only for $130. Not only does it save money in the long run, it also simplifies my routine, removing the clutter of multiple bottles and powders while delivering maximum results.
The Final Verdict
After 60 days, OneFit® has completely transformed my recovery, performance, and overall health. It’s helped me lose fat, build lean muscle and strength, and feel healthier all around. My muscle repair feels faster, my endurance in workouts has improved, and I notice a big difference in my hydration and energy. By the second month, I also saw improvements in my skin, nails, and overall vitality, all thanks to having protein, creatine, collagen, BCAAs, and vitamins combined in one formula.
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AG1 offers broad nutritional coverage, but it lacks the protein, creatine, and collagen that make OneFit® a true post-workout powerhouse.
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If you want real recovery, stronger performance, and streamlined nutrition, OneFit® is the clear choice.
