The Sports Drink Built for Youth Tennis.
No clock, no subs, and nowhere to hide from the sun. GRINTA helps young tennis players replace the electrolytes they sweat out over long matches, with a third of the sugar of a traditional sports drink.

- Only 10g sugar
- 3 electrolytes
- No artificial colours
- Made for kids
What tennis asks of young players
Tennis matches have no set length and are often played on hot outdoor courts. Tournament players can face more than one match in a day.
- ✓Replaces electrolytes over long matches on hot courts
- ✓One sachet per match, ready at every changeover
- ✓10g of sugar, a third of a traditional sports drink
- ✓No artificial colours
How to use it for tennis.
Mix one sachet into a water bottle before warm-up.
Sip at every changeover.
On tournament and all-day events, have a fresh sachet ready for the next match.
A third of the sugar of a traditional sports drink.
GRINTA mixed in 600ml of water vs a 591ml bottle of a traditional sports drink. Pediatric groups recommend kids keep added sugar under 25g a day (AAPD).
See the full comparison →



coach a tennis team?
Get samples for your team, or raise money for your club with the GRINTA Fundraising Program.
For Teams and Leagues →Questions parents ask.
When should my child drink GRINTA during a tennis match?
Sip at every changeover. For tournaments, pack a sachet for each match.
How much sugar is in GRINTA?
One sachet, mixed in 600ml of water, has 10g of cane sugar. A typical 591ml bottle of a traditional sports drink has 34g.
What electrolytes are in GRINTA?
Each sachet has 200mg of sodium, 125mg of potassium and 20mg of magnesium from magnesium bisglycinate.
Can our team fundraise with GRINTA?
Yes. Teams, clubs and schools get a custom code and earn funds on qualifying purchases. Apply on our Teams and Leagues page.