Why We Love It
Your gut works as hard as you do, so give it some love. The SIS Complex Biotic delivers 42 billion gut friendly cultures in one easy daily capsule, slotting straight into your routine. Vegan friendly and built for people who ask a lot of their bodies, it's a simple supplement worth taking.
Talk Nerdy To Me
Complex Biotic is built on a unique blend of five well researched bacterial strains, delivering 42 billion gut friendly cultures per capsule to support gut health in active lifestyles. A healthy gut microbiome supports digestion, nutrient absorption and immune function, all useful when your body's under regular physical stress. Every batch is Informed Sport certified, tested against the WADA Banned Substances list, so athletes can take it with confidence.
Fast Facts
- 42 billion gut friendly cultures per capsule
- Unique five strain bacterial blend
- Informed Sport certified
- 30 capsules per pack
- Supports gut health, recovery & overall wellbeing
- Suitable for vegans
🇦🇺 Australia
- FREE shipping on orders $129+ AUD (after discount codes are applied)
- Orders under $129: Shipping calculated at checkout
🇳🇿 New Zealand
- FREE shipping on orders $150+ NZD (after discount codes are applied)
- Orders under $150: Shipping calculated at checkout
- Customers are responsible for covering customs charges
🌍 International
- Shipping calculated at checkout
- Customers are responsible for covering customs charges
⚡ Express Shipping
- Available for all destinations
- Calculated at checkout
- Customers are responsible for covering customs charges for international orders
Same Day Dispatch: Orders placed before 12 PM (AEST/AEDT, Melbourne AU time) on weekdays are usually dispatched same day*. Orders placed after this cutoff will head out the next business day.*This is a guideline, not a guarantee. While we do our best to ship orders out on time, dispatch may be delayed during peak periods, sales events, or due to unexpected courier or warehouse issues.
Delivery Times - Australia: Standard shipping takes 3-9 business days. Need it faster? Choose Express at checkout.
Please Note: Delivery times may vary due to public holidays and other factors beyond our control. Check current shipping estimates here.
30-Day Policy
Easy returns and exchanges within 30 days of delivery (excluding items listed below).
Tech Item Exception:
Watches, FORM goggles, headphones, heart rate monitors, recovery boots and similar tech items can only be returned if they are in their original packaging with the seal intact (unopened and unconnected). Unless faulty or covered by warranty.
Personal Care / Hygiene Items:
For hygiene and safety reasons, change of mind returns and exchanges are not accepted for personal care/hygiene items, including socks, underwear and swimwear (even if they are not marked as Final Sale). Unless faulty or covered by warranty.
Final Sale Items
Items marked as FINAL SALE cannot be returned or exchanged unless faulty or covered by warranty.
Gift Purchases
Buying a gift? Contact us at purchase to request an extended return period.
Need Help?
Full return policy details and process here.
Request a return here.
Same day dispatch before 12pm AEDT/AEST*
Aussie owned and operated
Athlete support & in-house dietitian