If you have a question about an order — including delivery, tracking, or returns — please include the order number and the email address used at checkout so we can find your record quickly.
If you have a question about a subscription — skipping a delivery, swapping a tier, updating a delivery address, or cancelling — the fastest path is your KBX dashboard, but we are happy to help by email if you prefer.
Wholesale, partnership, gym, and team enquiries are welcome. If you coach athletes or run a club and you are interested in supplying X-Fuel to your members, please tell us a little about your team in the first message so we can route the enquiry properly.
Press, podcast, and content collaborations are reviewed by Coach KB personally. We try to reply within one to two working days, but campaign weeks can be slower — please include a deadline if you have one.
Ingredient or formulation questions go straight to our science team. Per-sachet doses are listed in full on the product page and in our Evidence Glossary, but if there is something specific you would like us to clarify, ask.
We do not provide medical advice. If you have a health condition, take prescription medication, are pregnant, nursing, or planning to be — please consult a qualified healthcare professional before adding any supplement to your routine.
All correspondence is handled in line with our Privacy Policy. We do not sell your data. We do not pass your address to third parties unless required to fulfil an order.