Natural Proteins
Explore Bulk Nutrients’ range of natural whey protein powders, expertly crafted for taste, purity, and performance.
Free from artificial sweeteners, flavours, and additives, our Natural Whey Protein Isolate (WPI) and Natural Whey Protein Concentrate (WPC) offer a clean and effective protein source that’s now naturally whey better than ever.
Available in four delicious, naturally sweetened flavours, these high-protein supplements are ideal for supporting muscle recovery, lean muscle growth, and everyday wellness.
Promo: Free Shaker with Every Natural WPI or WPC Order in July
For a limited time only – every order of Natural WPI or Natural WPC in July comes with a free Bulk Nutrients shaker. It's the perfect way to enjoy your naturally sweetened shake on the go. Simply add your favourite flavour to cart and we’ll include your free shaker – no code needed!

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Why Choose Our Natural Whey Protein Range?
Whether you’re looking for a clean protein powder for post-workout recovery or a natural whey supplement to support your daily nutrition, our Natural WPI and Natural WPC deliver premium quality without compromise.
- 100% naturally sweetened – no artificial sweeteners, flavours, or additives
- Smooth, clean taste with no bitterness or chemical aftertaste
- High protein, low carb and low fat – ideal for lean muscle support
- Fast-digesting whey protein – perfect post-workout or anytime during the day
- Sourced from grass-fed, hormone-free dairy
Choose a protein that works as hard as you do - naturally.
What’s the Difference Between WPI and WPC?
Natural WPC is a great-value natural whey protein powder with excellent protein content per serve. It contains slightly higher levels of carbohydrates and fats compared to WPI, making it a more balanced option for those with higher energy needs. It’s ideal for everyday use, meal replacement, or as a versatile protein source to support an active lifestyle.
Natural WPI is a more refined, ultra-lean option. It offers a higher percentage of protein per serve, with very low levels of carbs, fats, and lactose. This makes it perfect for those who are lactose-sensitive, aiming to reduce calorie intake, or looking to maximise lean muscle recovery.
Both Natural WPI and WPC are naturally sweetened with stevia and thaumatin, delivering a clean, smooth flavour without artificial sweeteners or additives.
Available in Four Natural Flavours
Our natural whey protein powders are sweetened with a premium blend of stevia and thaumatin for a smooth, clean taste - no bitterness, no artificial aftertaste.
Choose from four delicious, naturally flavoured options:
- Chocolate
- Vanilla
- New Salted Caramel
- New Strawberry
Plus Natural WPC is also available in Raw (Unflavoured).
Each flavour delivers a great-tasting, high-protein shake you'll actually look forward to.
How to Use Natural Whey Protein Powder
To use, mix one scoop (around 30g) with 300–400ml of water, milk, or your preferred liquid. It’s best taken post-workout for muscle recovery, but it’s also great as a high-protein snack throughout the day.
Use it in shakes, smoothies, oats or even baking for a clean, natural protein boost whenever you need it.
Natural Supplements You Can Trust
At Bulk Nutrients, we believe natural protein powders should taste great and perform even better. That’s why we’ve formulated our Natural Whey range using premium grass-fed dairy and natural sweeteners.
Ready to upgrade your shake routine? Shop the Natural WPI and Natural WPC range and experience what makes it naturally whey better.