Genuinely useful in heat and long endurance efforts; unnecessary at a desk.
TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
Evidence strength
72/100Strong
WEAKLIMITEDMODERATESTRONGVERY STRONG
What the evidence supports: preventing hyponatraemia and dehydration in prolonged exertion.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
How long to take it
Situational — during and after prolonged sweating.
Who it's actually for
Endurance athletes, heavy sweaters, hot climates, and illness with fluid loss.
Safe upper limit
Unverified
Watch total sodium if you have high blood pressure
Over-drinking plain water in endurance events causes hyponatraemia, which is the actual risk these products address.