Certification status
Informed Sport
STYRKR SLT+
SLT+ from UK endurance brand STYRKR — founded in 2018 by cyclist Christian Sanderson, its name Old Norse for 'strength' — is a high-sodium electrolyte drink powder in single-serve sachets. It supplies a large sodium dose plus potassium, magnesium and calcium, is sugar-free and stevia-sweetened, and is vegan. STYRKR sells a separate SLT tablet; this is the powder. Informed Sport certified for tested athletes.
Buy in the UK
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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
- Is SLT+ a powder or a tablet?
- SLT+ is the powder in single-serve sachets you mix into water. STYRKR makes a separate electrolyte tablet product, so check which you want before buying.
- What makes it 'high-sodium'?
- SLT+ carries a notably large sodium dose per serving, aimed at endurance athletes and heavy sweaters who lose a lot of salt on long or hot efforts — more than a standard everyday electrolyte.
- Does it contain sugar?
- No. STYRKR formulates SLT+ sugar-free, sweetened with stevia, and it is suitable for vegans.
- Who is behind STYRKR?
- STYRKR is a UK endurance-nutrition brand founded in 2018 by cyclist Christian Sanderson. The name comes from the Old Norse word for strength.
