Most electrolyte powders are built for one job. Replace what you sweat out. Cadence has done something more interesting. They asked what an electrolyte formula should look like if the job is sleep, not sport.
The answer is on the ORUS shelf. Cadence is one of the few brands taking electrolytes seriously beyond the gym, and the result is a small but deliberate range that earns its place in the evening routine as much as in the training bag.
Cadence's philosophy
Cadence is a UK electrolyte brand built on the idea that hydration is not a one-size formula. The needs of a marathon runner mid-race are different from the needs of an office worker at 9pm. Both are losing fluid and minerals. Both benefit from replenishment. But the ratios, the supporting ingredients, and the timing should not be identical.
The brand keeps its range short. Two products, both built around the same evidence base, formulated for two distinct use cases. No flavoured sugar bombs, no proprietary blends. Every active is on the label at its dose, and every dose is set with a specific outcome in mind.
Sleep Hydration Electrolyte
The Sleep Hydration Electrolyte is the formula that put Cadence on our radar. The standard sodium-potassium-magnesium triangle is there, but the ratios are tuned for evening use. Sodium is lower than a sport formula. Magnesium glycinate is higher, and that is the key swap. The same form that sleep supplements use, at a meaningful dose, in a delivery vehicle people will actually drink.
Glycine is in the formula too, which is the second deliberate choice. Glycine has a small but consistent body of research on sleep latency and overnight body temperature regulation. At three grams it works on its own. In a hydration drink it does double duty, supporting both rehydration and the wind-down.
The flavour profile is light and not aggressively sweet. The idea is that people will actually drink it as the last beverage of the evening, swap it in for the glass of water on the bedside table, and get the magnesium and glycine in without it feeling like a supplement protocol.
Electrolyte Variety Stack
The Electrolyte Variety Stack is the daytime range. Standard sport-style ratios, multiple flavour options in a single pack, designed for training, travel, hot weather, or any session where sweat losses are real. The minerals are the same evidence-based forms as the Sleep Hydration formula, but the ratios are tuned for performance and recovery rather than for sleep.
The variety stack also solves the most common electrolyte purchase regret. Buying a tub of one flavour, getting bored after a week, and letting it sit unused for six months. A sampler pack means you find the flavour you actually want to drink before you commit to a full size.
Why electrolytes matter beyond the gym
The narrative on electrolytes has been training and endurance for decades, which has trained shoppers to think of them as something you only need when you are dripping with sweat. That is half the picture.
Electrolytes regulate fluid balance across every cell. They affect blood pressure, nerve transmission, muscle function (including the diaphragm and heart), and the autonomic nervous system that runs the parasympathetic wind-down at night. Chronic mild dehydration, which is common in adults who drink mostly coffee and tea, raises baseline cortisol and disrupts sleep architecture. It also lowers cognitive performance the next day in a way most people misattribute to bad sleep.
A small dose of electrolytes in the evening, particularly magnesium and a balanced sodium-potassium base, can help with overnight wakings, cramps, and the dry-mouth wakefulness that comes from being mildly under-hydrated overnight. It is not a sleep supplement on its own. But for people who lie in bed thirsty at 2am, or who wake with a headache they blame on stress, it is a cheap, low-friction fix.
How to use Cadence
Sleep Hydration goes in a glass of water 30 to 60 minutes before bed. Most people use it as the last drink of the evening, which sidesteps the bathroom-trip issue and gets the magnesium absorbed in the wind-down window. If you train in the evening, take it after the post-workout meal rather than instead of it.
The Variety Stack is for training days, hot weather, long flights, and the morning after a heavy night. Standard mix-with-water approach.
If you are new to electrolytes outside the gym, the Sleep Hydration formula is the unique angle and the easiest swap into an existing wind-down. If you train and want a daily electrolyte option, the Variety Stack is the more flexible buy.
The full Cadence brand page covers the formulation rationale for both products and lists every active ingredient.
