Fibre Boost
Fibre Boost Information
Most protein bars get one thing right and several things wrong. They deliver the protein, then load the bar with sugar alcohols, synthetic crisps and heat-extruded ingredients that leave the gut bloated and the energy crashing within the hour. Fibre Boost was built to fix the trade-off. Each 60g bar provides 21g of whey protein isolate and milk protein isolate alongside 25g of soluble prebiotic fibre, with sugar typically under 2g and the whole bar landing under 150 calories. That ratio of protein to fibre to calories is genuinely unusual in the category and is the reason the brand has become a staple for people tracking macros, managing weight or trying to eat a cleaner snack between meals.
The cold-pressed manufacturing process is what makes the formula work. Whey protein is sensitive to heat, and the high temperatures used in conventional extruded bars denature the protein structure, which reduces digestibility and is one of the main reasons traditional protein bars have a chalky, dry texture. Cold-pressing combines the ingredients under pressure rather than heat, preserving the native protein structure and keeping the natural moisture in the bar. The result is a bar with a cleaner amino acid profile, better digestibility and a soft, chewy texture that does not need filler ingredients to mask poor processing.
The fibre content is the second technical point worth understanding. The 25g of soluble prebiotic fibre in each bar comes primarily from corn-derived prebiotic fibre, which is fermented in the large intestine by your gut microbiome into short chain fatty acids, particularly butyrate. Butyrate feeds the cells lining the gut wall and supports the integrity of the intestinal barrier. Most Australian adults are eating roughly half the recommended 25 to 30g of fibre per day, so a single bar can close that gap in one snack. The prebiotic action also supports satiety, which is part of why these bars sit so well in a weight management plan despite being a sweet snack.
The bars are not plant-based, they contain whey and milk protein isolate, so they suit anyone tolerating dairy but are not appropriate for vegans or those with a confirmed dairy allergy. They are sweetened with steviol glycosides rather than sugar alcohols like maltitol or sorbitol, which is the main reason most people who react badly to other protein bars tolerate these comfortably. Mr Vitamins stocks the full Fibre Boost range across more than 30 flavours, from Apple Crumble, Brownie and Choc Hazelnut through to Cappuccino, Banana Bread, Caramel Honey Macadamia and Rocky Road.
If you are using Fibre Boost as part of a broader gut, weight management or training nutrition strategy, our naturopaths can help you fit it into the picture properly. Book a free in-store naturopath consultation to talk through fibre intake, gut health and how snack choices sit alongside protein powders, pre and probiotics and the rest of your daily nutrition.
Key Benefits
- Cold-pressed manufacturing to preserve raw protein structure and avoid the dry, chalky texture of heat-extruded bars
- 21g of whey protein isolate and milk protein isolate per bar, sourced for high biological value and rapid absorption
- 25g of soluble prebiotic fibre per bar to feed the gut microbiome and support short chain fatty acid production
- Under 150 calories per bar, very low in sugar and carbohydrate, suiting macro tracking and keto-style eating
- Sweetened with steviol glycosides rather than sugar alcohols, reducing the bloating and gut upset other bars cause
- Australian-made across 30-plus dessert-inspired flavours, including Apple Crumble, Brownie, Choc Hazelnut, Caramel Honey Macadamia, Banana Bread and Rocky Road
- Suitable as a post-training recovery snack, a fibre top-up between meals or a sweet craving swap that supports rather than undermines daily nutrition goals