Unicity Signal Review: L-Citrulline, Beetroot & 4 Electrolytes — The Fasting-Friendly Hydration Upgrade

By Fadi Yassine — Senior Director Distributor, Unicity International · Published 2026-07-19 · Updated 2026-07-19 · 9 min read

Quick answer: Most electrolyte drinks replace minerals. Unicity Signal goes further — pairing 4 bioavailable electrolytes with 3g L-citrulline and 670mg beetroot extract to boost nitric oxide and actually get water into your cells. Full review inside.

You're drinking enough water. You just don't feel hydrated. That familiar afternoon brain fog, the low-grade fatigue that no amount of coffee quite fixes, the muscle cramps mid-workout — these are not signs you need more water. They are signs that the water you're drinking is not getting into your cells.

This is what Unicity calls a cellular voltage crisis: a breakdown in your body's electrical balance that worsens with age, stress, and modern lifestyles. Electrolytes are the key — not because they add flavour to your water, but because they are the electrical charge carriers that drive water into cells and keep them functioning. Without the right balance, water sits in your digestive tract and gets flushed out before it reaches where it is needed most.

Unicity Signal is the company's answer to this problem — and it goes considerably further than a standard electrolyte packet. This is my honest review as a Senior Director Distributor at Unicity International and Feel Great coach. I'll cover every ingredient, the supplement facts, how it fits intermittent fasting, and how it compares to LMNT, Liquid IV, and Gatorade.

What Is Unicity Signal?

Signal is a single-serve electrolyte stick pack that Unicity describes as the world's first bioelectrical restoration protocol. It comes in natural cherry flavour, delivers 25 calories per serving (9.2g stick pack), and contains 30 servings per box. It's sugar-free, caffeine-free, naturally sweetened with stevia, and uses no artificial colours or flavours.

What separates Signal from most electrolyte drinks is its two-level approach:

Level 1 — Electrolyte restoration: A full spectrum of highly bioavailable electrolytes — magnesium malate, potassium chloride, sodium (chloride + gluconate), calcium citrate malate, and zinc gluconate — restores the mineral balance cells need to pull water in and maintain optimal function.

Level 2 — Nitric oxide support: A precise dose of L-citrulline (3g) and beetroot extract (670mg) boosts nitric oxide production, promoting vasodilation — the relaxation of blood vessels — so oxygen, nutrients, and electrolytes reach your cells more efficiently.

Most electrolyte products stop at Level 1. Signal's differentiation is Level 2: addressing the circulation side of the hydration equation, not just the mineral side.

The Ingredients: A Full Breakdown

1. L-Citrulline — 3g

L-citrulline is an amino acid that converts to L-arginine in the kidneys, which then drives nitric oxide (NO) synthesis. Nitric oxide relaxes blood vessel walls (vasodilation), improving blood flow and the efficient transport of oxygen, nutrients, and electrolytes to working tissues. At 3g per serving, Signal uses a clinically relevant dose — studies on L-citrulline supplementation typically use 3–6g per day.

Beyond circulation, L-citrulline has demonstrated the ability to reduce post-exercise muscle soreness and accelerate recovery. For intermittent fasters doing morning workouts in a fasted state, this matters: your muscles are working without the usual glucose buffer, and efficient oxygen delivery becomes even more critical.

2. Beetroot Extract — 670mg

Beetroot extract is rich in dietary nitrates, which are converted in the body to nitric oxide through a pathway independent of L-citrulline — making the two ingredients complementary rather than redundant. Research demonstrates beetroot extract can lower the oxygen cost of exercise (meaning your body works more efficiently at the same effort level), extend time to exhaustion, and support cardiovascular efficiency. Its antioxidant profile also reduces oxidative stress and supports recovery.

The combination of L-citrulline and beetroot extract hitting nitric oxide production through two independent pathways is Signal's most distinctive feature — and the one that separates it from every other electrolyte product on the market.

3. Magnesium Malate — 200mg (48% DV)

Magnesium malate is one of the most bioavailable forms of magnesium. Magnesium is involved in over 300 enzymatic reactions, including energy metabolism, muscle contraction, and protein synthesis. For hydration specifically, magnesium regulates ion transport at the cellular level — it drives how electrolytes actually get into cells rather than just passing through. The 48% daily value per serving makes a meaningful dent in most people's needs. Estimates suggest 50–80% of adults in developed countries do not meet recommended magnesium intake.

4. Sodium — 395mg (17% DV)

Sodium is the primary extracellular electrolyte and the one most directly lost through sweat. It drives water balance and fluid absorption, and is essential for rapid rehydration, nerve signalling, and maintaining performance during heat or exertion. At 395mg, Signal provides a meaningful sodium dose without tipping into the high-sodium territory of some sports drinks.

5. Potassium — 300mg (6% DV)

Potassium is the primary intracellular electrolyte and works in balance with sodium to regulate fluid distribution between inside and outside cells. It is vital for nerve conduction and muscle contraction, and adequate potassium helps offset sodium's blood pressure effects. Potassium is heavily depleted during exercise and through sweat.

6. Calcium Citrate Malate — 100mg (8% DV)

Calcium citrate malate is a highly absorbable form of calcium — more so than the standard calcium carbonate used in cheaper formulas. Beyond bone health, calcium is critical for muscle contraction, nerve transmission, and vascular tone. Choosing the citrate malate form reflects Unicity's commitment to bioavailability over cost-cutting.

7. Zinc Gluconate — 3mg (27% DV)

Zinc is an essential trace mineral often missing from hydration products. It supports immune function, protein synthesis, and cellular repair, and regulates membrane proteins that contribute to cellular hydration. Zinc is also lost through sweat, making it relevant for both intermittent fasters (with restricted dietary intake windows) and active individuals. The 27% daily value per serving is a meaningful contribution without risking toxicity from multiple daily servings.

Supplement Facts at a Glance

Per 9.2g stick pack (30 servings per box): 25 calories — 2g carbohydrates — 395mg sodium (17% DV) — 300mg potassium (6% DV) — 200mg magnesium malate (48% DV) — 100mg calcium citrate malate (8% DV) — 3mg zinc gluconate (27% DV) — 3g L-citrulline — 670mg beetroot extract. Other ingredients: citric acid (from cassava root), natural flavours, beetroot powder, xanthan gum, steviol glycosides.

Who Is Signal For?

Signal is ideal for six categories of people. Intermittent fasters: fasting naturally accelerates fluid loss while reducing electrolyte intake — Signal's comprehensive mineral profile directly addresses this gap during the fasting window. People who feel tired or foggy despite drinking plenty of water: this is the classic cellular voltage crisis Signal was designed to fix. Athletes and active individuals: the nitric oxide layer adds oxygen delivery and recovery support that pure electrolyte products cannot. Busy professionals and parents: sustained mental clarity and energy without caffeine or a sugar crash. Feel Great System users: Signal is a natural complement to Unimate and Balance. Anyone wanting to upgrade beyond basic sports drinks: without the sugar, artificial colours, or crash.

Signal and the Feel Great System

Signal is designed as an optional add-on to the Feel Great protocol — not a replacement for Unimate or Balance, but a complementary layer that addresses hydration and circulation at the cellular level. While Balance supports metabolic health and glycaemic control, and Unimate provides sustained fasting-state energy and focus through chlorogenic acids, Signal works on blood flow: ensuring that the nutrients, oxygen, and electrolytes those products support actually reach your cells efficiently.

The practical integration is simple. Take Signal first thing in the morning — one stick pack in 16–18 oz of water — to rehydrate after overnight fasting and prime your circulation for the day. A second serving can be added pre- or post-workout, during travel, or on particularly hot or active days. Signal can be taken any time without disrupting the Feel Great protocol.

Does Signal Break a Fast?

No — and the answer is specific: Signal contains exactly 25 calories per serving, which sits precisely at Unicity's fasting guideline (25 calories or fewer within any 3-hour window). The 2g of carbohydrates come from trace amounts of natural ingredients rather than sugars, and stevia — the sweetener — has a glycaemic index of 0. Signal does not trigger a meaningful insulin response. For the vast majority of intermittent fasters, it is safe and beneficial during the fasting window. If you follow a strict zero-calorie therapeutic fast, consult your healthcare provider.

Signal vs. The Competition

The comparison chart above shows Signal alongside LMNT, Liquid IV, Instant Hydration, and Gatorade Thirst Quencher across 9 criteria. Signal is the only product to check every single row. The two criteria no competitor can match: L-citrulline and beetroot extract. Signal also wins on the combination of clean label, 100% natural ingredients, fasting-friendly formulation, no added sugar, and no artificial colours — simultaneously — which no other brand on the chart achieves.

The structural difference: LMNT and Liquid IV are electrolyte-only formulas. They replace minerals but do nothing for blood flow or nitric oxide production. Gatorade relies on sugar and artificial dyes. Instant Hydration comes closer on ingredients but lacks the L-citrulline and beetroot stack entirely. Signal is the only formula built to both restore electrolyte balance and improve the circulation that delivers those electrolytes to your cells.

Pricing

Signal is currently a Unicity Labs (ULabs) exclusive — a limited-run, innovation-tier product available through Unicity distributors. Contact me directly for current member pricing in your country. At member rates, the per-serving cost is competitive with premium electrolyte brands like LMNT while delivering the additional nitric oxide layer those products do not include.

Bottom Line

Most electrolyte drinks solve half the problem. They replace what you lose through sweat but do not address why electrolyte-loaded water is not getting into your cells efficiently. Signal solves both sides: its full-spectrum bioavailable electrolyte blend restores your cells' electrical balance, and the 3g L-citrulline + 670mg beetroot extract combination improves blood flow so those electrolytes actually arrive where they need to go.

For intermittent fasters, Signal fills a genuine gap: comprehensive electrolyte support during the fasting window at exactly 25 calories, no caffeine, no insulin spike. For athletes, the nitric oxide layer means better oxygen delivery and faster recovery. For anyone dragging through their afternoon despite drinking plenty of water — Signal addresses the root cause rather than masking it with stimulants.

If you are on the Feel Great System, Signal is the logical next layer. If you are comparing it to LMNT or Liquid IV, Signal wins on formulation depth — not just on which electrolytes it contains, but on what your body can actually do with them.

Disclosure: I am an independent Senior Director Distributor at Unicity International and earn commission on purchases made through this site. This content is educational and not medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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