SULT electrolyte sachets cost £1 a serving, and the soft launch sold out in hours

SULT is a UK electrolyte sachet brand set up by Henry Porpora and Milly Goldsmith, and it is aimed squarely at people who are not marathon runners. On subscription, a pack of 26 sachets costs £26 with free UK delivery, which works out at £1 a serving. When SULT soft launched in April 2025, its sachets sold out within hours, according to Vitafoods Insights.

You can find the range on SULT’s electrolytes page, in three flavours: Watermelon Berry, Peach Citrus and the newer Mango Tropical.

Who is behind SULT?

Henry Porpora previously worked at the sports nutrition brand Puresport, and Milly Goldsmith is a wellness and fitness creator with over one million followers across Instagram and TikTok. In an interview with Vitafoods Insights, Porpora explained that hydration brands felt “aggressively targeted” at performance athletes, which left a gap for people with a desk job, a gym membership and a busy social calendar.

The pair build the brand in public, sharing launches, setbacks and product tests on social media. Speaking to the brand consultancy eatbigfish, Porpora said the aim is to move electrolytes away from gym culture and towards everyday drinkers, with bright packaging you would happily leave on your desk.

What is inside a SULT sachet?

According to SULT and Vitafoods Insights, each 4.5g sachet contains all six key electrolytes:

• Sodium: 500mg (a “medium” level, by design)
• Potassium: 306mg
• Magnesium: 100mg
• Calcium: 120mg
• Phosphorus: 94mg
• Chloride: 1,061mg

The ingredients list starts with pink Himalayan salt, then magnesium citrate, calcium citrate malate from marine algae and potassium. It is sweetened with stevia, contains coconut water powder, and the brand says there is no sugar, no artificial sweeteners and no artificial flavours. SULT also says everything, from the sachets to the boxes, is produced in the UK.

Source: SULT.

How much does SULT cost?

On 23 October 2026, SULT’s product page lists these prices:

• One pack of 26 sachets, bought once: £31, plus £3.99 UK delivery (about £1.19 a sachet before delivery)
• The same pack on subscription: £26 with free UK delivery, so £1 a sachet
• Variety pack: £19.99 for 15 sachets or £35.70 for 30
• Starter pack: £30, with a bottle included
• Deliveries every 3, 4, 6, 8 or 12 weeks, with every 4 weeks marked as the most popular

The subscription can be paused, cancelled or adjusted at any time, and SULT offers a 30-day money-back guarantee. It also promises free gifts with subscription orders.

On its own comparison table, SULT puts its price at £1 a serving against £1.25 for Liquid IV and £1.40 for Humantra. Those are the brand’s own figures, so treat them as its claim.

Our hot take: the branding is the product, and that is fine

Let’s be honest: electrolyte powders are not hard to make. Vitafoods Insights notes that the sachets themselves are not particularly novel, and Porpora told eatbigfish that SULT became a cult product thanks to its positioning and branding rather than the formula alone. What SULT gets right is the positioning. Most hydration brands talk to athletes or to the hungover; SULT talks to people who go to the gym twice a week and still enjoy a Friday pint.

The numbers also stack up. £1 a serving on subscription is cheaper than Liquid IV and most premium rivals, there is no sugar, and the medium sodium level makes sense if you are drinking it at your desk rather than after a half marathon. The flexible plan, with no minimum term and a money-back guarantee, removes most of the risk.

What we would watch: 4 weeks of sachets at one a day is 28 servings, but a pack holds 26, so a daily habit on the 4-week plan will leave you a couple short each cycle. Pick the 3-week plan if you drink one every day. And as with any supplement, an electrolyte sachet is not a cure-all: water still does most of the work.

It will suit you if you want a lighter, tastier daily electrolyte drink at a fair price. If instead you train hard and sweat a lot, a higher sodium formula may be a better fit.

If sparkling is more your thing, our hot take on HYCO hydration cans covers a ready-to-drink alternative from £2.50 a can.

Price and subscription: the essentials

• Product: SULT electrolyte sachets, 26 per pack
• Flavours: Watermelon Berry, Peach Citrus, Mango Tropical
• Price: £31 one-off (plus £3.99 delivery) or £26 on subscription with free UK delivery
• Cost per serving: £1 on subscription
• Frequency: every 3, 4, 6, 8 or 12 weeks
• Commitment: none, pause or cancel at any time, 30-day money-back guarantee

Prices checked on 23 October 2026. You can order on the SULT website, and browse more food and drink boxes in our food and drink subscriptions section.