By the middle of August in Austin, golf stops being a game of shot-making and becomes a game of thermal management. A 2pm tee time at Hancock in triple-digit heat is a four-hour walk with no shade and no mercy, and the difference between finishing well and falling apart on the back nine usually has nothing to do with your swing.
Here is the thing almost nobody checks: most electrolyte drinks are dosed for ordinary daily hydration, not for standing in a Texas field losing a litre of sweat an hour. The sodium content across the fourteen products below ranges from 260mg to 1,500mg. That is a spread of more than five to one, sold in packaging that looks broadly identical on a shelf.
We pulled the numbers off each brand’s own product page rather than trusting the marketing. Seven of them publish a clear per-serving sodium figure. Seven don’t, which is itself informative. The table below is sorted by what’s actually in the packet.
Sodium is the number that matters when it’s 102° and you’re walking Lions. These are the seven brands here that publish a clear per-serving figure on their own product page. The spread is more than five to one.
| Product | Sodium | Basis | Price |
|---|---|---|---|
| Precision Fuel & Hydration PH 1500 | 1,500 mg | per litre | $13.99 |
| LMNT Recharge | 1,000 mg | per stick | $45 |
| Sodii Everyday Hydration Salts | 1,000 mg | per stick | AU$68.90 |
| SALTT Powder Drink Mix | 969 mg | per stick | $6.50 |
| Skratch Labs Hydration Sport Drink Mix | 400 mg | per serving | $23.95 |
| Nuun Sport | 300 mg | per tablet | $7.49 |
| Hydrant Hydrate | 260 mg | per stick | $44.99 |
Figures taken from each brand’s own product page, August 2026. The seven not listed here don’t publish a per-serving sodium figure on-page — check the label.
There is no single number, but sweat sodium loss ranges roughly from 200mg to over 2,000mg per litre of sweat depending on the person, and you can lose one to two litres of sweat during a hot walking round. Most mainstream electrolyte drinks are dosed between 250mg and 500mg per serving, which is built for ordinary daily hydration rather than heat stress. Precision Fuel & Hydration offers sweat testing if you want your actual number rather than a guess.
For a walking round in triple-digit heat, the higher-sodium options make the most sense: LMNT at 1,000mg per stick, Precision PH 1500 at 1,500mg per litre, Sodii at 1,000mg, or SALTT at 969mg. For a cart round or a cooler morning tee time, lighter options like Nuun Sport at 300mg or Skratch at 400mg are plenty.
It works, and the glucose in the formula genuinely does help move fluid across the gut faster, which is the principle behind oral rehydration therapy. The trade-offs are the sugar content and the fact that Liquid I.V. does not publish a clear per-serving sodium figure on its product page. It is a reasonable default rather than the sharpest option for extreme heat.
Both, and before matters more than most golfers realise. Starting a round already down on fluid and sodium is very hard to correct once you are out there. A common approach is one serving in the 60 to 90 minutes before the tee time and a second bottle mixed for the round itself.
For a cool nine holes, water is fine. For a hot walking round of four hours or more, replacing sodium matters, because drinking large volumes of plain water while losing salt through sweat can leave you worse off rather than better. The cramping, headache and heavy-legged feeling on the back nine is often sodium rather than fluid.
