Certification status
Informed Sport
science in sport GO Energy + Caffeine Gel
SiS GO Energy + Caffeine is the caffeinated version of SiS's isotonic energy gel — fast carbohydrate plus a caffeine hit during long or hard efforts, and like the standard GO gel it's designed to be taken without water. Informed Sport certified, with every batch tested against the banned-substances list. £10.72 on Amazon UK for a multipack, rated 4.5 from over 330 reviews.
Buy in the UK
- Paid linkView price at Amazon UK
We may earn a commission if you buy through links on this page.
Why this certification matters
- Informed Sport
- Informed Sport certification is especially relevant for athletes in tested sports because products are batch-tested for substances prohibited in sport.
Frequently asked questions
- How is this different from the standard GO gel?
- It adds caffeine to the same isotonic energy gel, for a pick-me-up during long or hard sessions.
- Do you need water with it?
- No — it's isotonic, designed to be taken without washing down, unlike thicker gels.
- How many gels are in the listing?
- The £10.72 Amazon UK listing is a multipack; check the count for the per-gel cost.
- Is it banned-substance tested?
- Yes — Informed Sport certified, every batch.
