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Most wellness products we review here are optional. Electrolytes are closer to necessary: the most common serious complication of GLP-1 treatment is acute kidney injury caused by dehydration, and these medications cause vomiting and diarrhoea while blunting the thirst cues that would normally prompt you to drink. Liquid I.V. addresses that properly — 490 to 630mg of sodium per stick at about $1.56 a serving. Just buy the sugar-free version.
Why Hydration Is a Clinical Issue on a GLP-1
Dehydration-driven acute kidney injury is the most common serious adverse event associated with GLP-1 medications in practice. It happens because vomiting and diarrhoea lose fluid and salt, and appetite suppression means you are drinking and eating less to replace them.
Plain water alone is not always the complete answer when you are losing fluid through the gut, because you lose sodium, potassium and chloride with it. Replacing water without electrolytes can leave you with a diluted sodium level, and the symptoms of that — headache, nausea, fatigue, confusion — look uncomfortably like the medication side effects you were already having.
So an oral rehydration product has a real role during the days after a dose increase, when GI symptoms cluster. This is one of the few supplement categories on this site where we think the underlying physiology genuinely supports the purchase. Our side effects guide covers when symptoms warrant a call to your prescriber rather than a drink.
Product Facts
| Active ingredient | Amount per serving |
|---|---|
| Sodium | Approximately 490–630mg per stick depending on variety |
| Potassium | Present; amount varies by variety |
| Carbohydrate (original) | About 11g |
| Sugar (original) | About 10g — the sugar-free version omits this |
| B vitamins | Included; amounts vary by variety |
| Manufacturer | Liquid I.V. |
|---|---|
| Serving size | One stick pack, mixed into water |
| Servings per container | 16 in the commonly sold box |
| Other ingredients | Flavourings and, in the sugar-free line, non-nutritive sweeteners |
| Intended use | Oral rehydration and electrolyte replacement |
| Directions | Mix one stick into water per the label. Do not exceed the labelled daily amount without advice. |
| Warnings | High sodium content. Speak to a clinician before regular use if you have high blood pressure, heart failure, kidney disease, or are on a sodium-restricted diet. Not a treatment for persistent vomiting or diarrhoea — seek medical advice for those. |
| Allergens | Check the current pack; not verified by us |
| Pricing | About $24.99 for 16 packets, roughly $1.56 per serving |
| Subscription options | Subscription options offered; terms not verified by us |
| Refund policy | Not verified by us |
| Shipping | Varies by retailer; widely available in stores |
The Sugar Problem, and the Version to Buy
The original Hydration Multiplier contains roughly 11g of carbohydrate and 10g of sugar per stick. On a weight-loss site that needs saying plainly: two or three sticks a day is 20 to 30g of sugar you did not intend to drink.
There is a legitimate physiological reason for the glucose — the sodium-glucose co-transport mechanism means a little sugar genuinely does help the gut absorb sodium and water, which is why oral rehydration solutions have contained glucose for decades. That is real science, not marketing.
But it matters less for the situation most readers here are in. You are not treating cholera; you are topping up after some nausea. And the trade-off is worse for you than for most people: you are in a deliberate calorie deficit, and many people on GLP-1s find sweet drinks particularly unappealing or nausea-provoking.
Buy the sugar-free version. It keeps the sodium, which is the part that matters, and drops the calories. If you are severely dehydrated from persistent vomiting, that is a call to your prescriber, not a decision about which sachet to buy.
Is 500mg of Sodium Right for You?
Between 490 and 630mg of sodium per stick is a meaningful dose — roughly a fifth to a quarter of a common daily target in a single drink. That is the point of the product, and it is appropriate when you are genuinely losing salt.
It is not appropriate for everyone. Check with a clinician first if you have high blood pressure, heart failure, chronic kidney disease, or have been told to restrict sodium. Several of those conditions are common in the population being prescribed GLP-1s, which makes this more than a boilerplate warning. Habitual daily use when you are not losing fluid is also unnecessary — this is a product for the bad days, not every day.
On “Cellular Transport Technology”
Liquid I.V. markets a branded “Cellular Transport Technology” and a claim of three times the electrolytes of a typical sports drink. The underlying mechanism — glucose and sodium co-transport aiding water absorption — is genuine and well established. What is branded here is a name for it, not a proprietary discovery, and the same principle underlies every oral rehydration solution including ones costing a fraction as much.
Treat the trademark as packaging. Judge the product on the numbers on the back: sodium content, sugar content and price per serving.
Cost, and the Cheaper Alternative
| Option | Per serving | Sugar |
|---|---|---|
| Liquid I.V. original | ~$1.56 | ~10g |
| Liquid I.V. sugar-free | ~$1.56 | 0g — the version to buy |
| Buoy drops | ~$1/day | 0g, unflavoured |
| Water plus a pinch of salt | Pennies | 0g |
At around $1.56 a serving, daily use runs roughly $47 a month — comparable to a compounded semaglutide prescription at the cheapest providers. The honest comparison is that salt in water covers the same physiology for a fraction of the cost. What you are paying Liquid I.V. for is that it tastes acceptable and you will therefore actually drink it, which is not a trivial benefit when nausea has made everything unappealing.
Pros and Cons
Pros
- Addresses a genuine clinical risk on GLP-1s, not an invented one
- Meaningful sodium dose of 490–630mg per stick
- Sugar-free version available with the electrolytes intact
- Palatable, which matters when nausea has ruined your appetite
- Widely available in supermarkets and pharmacies
- Nutrition information clearly labelled
Cons
- The original contains about 10g of sugar per stick
- ~$1.56 a serving adds up to roughly $47 a month at daily use
- Sodium load is unsuitable for some heart and kidney conditions
- “Cellular Transport Technology” is branding for established science
- Unnecessary on days you are not losing fluid
- Salt in water achieves most of the same thing for pennies
Who Should Use It, and Who Should Look Elsewhere
This is worth keeping in the cupboard if you are titrating a GLP-1 and get nausea, vomiting or diarrhoea after dose increases. Buy the sugar-free version, use it on the bad days rather than daily, and treat it as a convenience over salted water rather than a breakthrough.
Look elsewhere if you have been told to limit sodium, or if you want zero sweeteners — Buoy makes unflavoured drops you can add to anything. And if vomiting or diarrhoea is persistent rather than occasional, that is a conversation with your prescriber, not a purchase.
Limitations of This Review
This review is based on published nutrition information and independent coverage checked on 7 August 2026. Formulations differ across the product line and reported sodium and potassium figures vary between varieties; check the specific pack you buy. We could not verify allergen information, subscription terms or refund policy. We have not tested the product. Nothing here is individual medical advice — if you have a cardiac or kidney condition, the sodium question is one for your clinician.
Frequently Asked Questions
Should I use Liquid I.V. if I am on a GLP-1?
Electrolyte replacement can be genuinely useful, because vomiting and diarrhoea are common on these medications and dehydration-driven acute kidney injury is their most common serious complication. Choose the sugar-free version, and speak to your prescriber first if you have high blood pressure, heart failure or kidney disease, since the sodium load is substantial.
How much sugar is in Liquid I.V.?
The original Hydration Multiplier contains around 11g of carbohydrate and 10g of sugar per stick. A sugar-free version is available and is the sensible choice for anyone managing weight.
How much does it cost?
Around $24.99 for 16 packets, or about $1.56 per serving. Plain water plus a pinch of salt costs almost nothing and covers the same physiology for most people.
Is Liquid I.V. better than water?
For ordinary daily hydration, no — water is fine. It becomes useful when you are actually losing electrolytes through vomiting, diarrhoea or heavy sweating, which is a realistic scenario during GLP-1 dose escalation.
Verdict
3.7 / 5
One of the few supplements on this site addressing a real clinical risk rather than an invented one — provided you buy the sugar-free version and use it on the days you actually need it.
Dehydration is not a wellness abstraction on a GLP-1; it is the mechanism behind the most common serious complication these drugs cause. Having something palatable on hand that replaces salt as well as water is sensible, and Liquid I.V. does that competently.
Two caveats keep it from rating higher: 10g of sugar in the default version is the wrong product for this audience, and at $1.56 a serving you are paying a large premium over salted water for flavour and convenience. Buy sugar-free, keep it for the days after a dose increase, and clear the sodium with your clinician if you have any heart or kidney history.
Supplement Disclaimer & Review Date
These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Dietary supplements are not FDA-approved medications, are not reviewed by the FDA for safety or effectiveness before they go on sale, and are not a substitute for prescription treatment.
Nothing on this page is medical advice, and nothing here should be read as a promise of weight loss or of any particular result. Supplements can interact with prescription medications and are not appropriate for everyone. Talk to a doctor or pharmacist who knows your medical history before starting any supplement — particularly if you are pregnant or breastfeeding, take prescription medication, manage a chronic condition, or are already taking a GLP-1 medication.
Details about Liquid I.V. come from the manufacturer's own published materials as of the date below. Ingredients, amounts, pricing, and policies change frequently — check the current label and product page before purchasing.
Last reviewed: August 7, 2026
Sugar-Free, and Only on the Bad Days
The electrolytes are the point; the 10g of sugar is not. Use it after dose increases rather than daily, and check the sodium with your clinician if you have heart or kidney issues.