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Buoy is liquid electrolytes in a squeeze bottle — a short squeeze into whatever you are already drinking, with no sugar, no sweeteners and no calories. For a GLP-1 audience that profile is exactly right, because the usual electrolyte products come loaded with sugar. The catch is dose: 1.5ml of drops is not the same intervention as a full rehydration sachet.
What It Is
Buoy makes an unflavoured liquid concentrate containing electrolytes derived from sea salt — sodium, chloride, potassium, magnesium and calcium — alongside trace minerals, a B-vitamin complex and an antioxidant blend. You add it to water, coffee, tea or a smoothie rather than mixing a dedicated drink. A bottle carries around 120 servings.
Product Facts
| Active ingredient | Amount per serving |
|---|---|
| Electrolytes from sea salt | Sodium, chloride, potassium, magnesium and calcium; per-serving milligrams not published in the sources we could verify |
| Trace minerals | Marketed as 87+ trace minerals |
| Vitamin B1 | 40% DV |
| Vitamin B5 | 30% DV |
| Vitamin B6 | 30% DV |
| Antioxidant blend | Proprietary — amounts not disclosed |
| Manufacturer | Buoy Hydration |
|---|---|
| Serving size | One short squeeze, approximately 1.5ml |
| Servings per container | Approximately 120 |
| Other ingredients | Purified water, citric acid |
| Intended use | Adding electrolytes and trace minerals to any beverage |
| Directions | One short squeeze per drink, per the label |
| Warnings | Contains sodium. Speak to a clinician before regular use if you have high blood pressure, heart failure or kidney disease. Not a treatment for significant dehydration. |
| Allergens | Not stated in the sources we could verify |
| Pricing | About $39.95 for a three-pack; roughly 20% off on subscription, working out at about $1 a day |
| Subscription options | Subscribe & Save offered at around 20–23% off |
| Refund policy | Not verified by us |
| Shipping | Sold direct and through major retailers |
The Dose Question — Drops Are Not Sachets
A 1.5ml squeeze cannot carry the mineral load of a full sachet. Liquid I.V. delivers 490–630mg of sodium per stick; Buoy does not publish a comparable per-serving sodium figure in any source we could verify, and the physical volume makes a similar dose implausible.
This is the central limitation and it is not a criticism of the concept — it is a different product for a different job. Buoy is designed for routine daily topping-up, not for replacing what you lose during a bout of vomiting. If you are genuinely depleted after a rough few days on a new dose, reach for a proper oral rehydration solution.
The undisclosed per-serving amounts are a real mark against it. We criticise supplements throughout this site for proprietary blends and unstated doses, and “87+ trace minerals” is a marketing count rather than a specification — most trace minerals are needed in microgram quantities that any varied diet supplies. Our label reading guide covers why an ingredient count is not a dose.
Where It Fits on a GLP-1
Dehydration is the mechanism behind the most common serious complication of GLP-1 treatment — acute kidney injury following vomiting and diarrhoea, compounded by appetite suppression blunting thirst. Anything that makes you drink more is doing useful work.
Buoy has two specific advantages for this audience. It adds no sugar, which matters when you are in a deliberate deficit and when sweet drinks often provoke nausea. And because it goes into a drink you were already having, it does not require you to face down a whole extra glass of something flavoured — a genuine benefit when nausea has made everything unappealing. See our side effects guide.
Use it as a daily habit, and keep something stronger for the bad days.
Taste and the Mixed Reviews
Buoy is marketed as near-flavourless. Independent reviews are genuinely mixed: many users report it blends invisibly, while a substantial number describe a noticeable mineral taste, and some report adverse reactions. That split matters more than usual here — if you find it unpleasant you will stop using it, and an electrolyte product you do not drink has no benefit at all.
Given the divided feedback, buy a single bottle before committing to a subscription.
Cost
A three-pack runs about $39.95, with roughly 20 percent off on subscription — around $1 a day, or $30 a month. That undercuts Liquid I.V. at roughly $47 a month for daily use, and it is more than salted water, which costs essentially nothing and delivers a known sodium dose you control.
Pros and Cons
Pros
- Zero sugar, zero sweeteners, zero calories
- Goes into a drink you were already having — no extra glass to face
- About $1 a day on subscription, cheaper than sachets
- Roughly 120 servings per bottle
- Includes B vitamins alongside the electrolytes
- Widely available including at major retailers
Cons
- Per-serving electrolyte amounts not published
- A 1.5ml dose cannot match a rehydration sachet
- “87+ trace minerals” is a count, not a meaningful dose
- Antioxidant blend is proprietary
- Taste reviews are genuinely divided
- Not adequate for significant fluid loss
Who Should Use It, and Who Should Look Elsewhere
Buoy suits you if you want a daily electrolyte habit with no sugar and no additional sweet drink to get through — a good fit during GLP-1 treatment. Buy one bottle first given the split on taste.
Look elsewhere if you need a real rehydration dose after vomiting, where Liquid I.V. sugar-free publishes its sodium and delivers more of it — or if you want to know exactly what you are taking, since Buoy does not disclose per-serving amounts.
Limitations of This Review
This review is based on published product information and independent coverage checked on 7 August 2026. We could not establish per-serving milligram amounts for sodium, potassium, magnesium or calcium, the composition of the antioxidant blend, allergen information, or refund terms — the missing electrolyte figures are the central gap. We have not tested the product, so taste is reported rather than assessed.
Frequently Asked Questions
Is Buoy strong enough to treat dehydration from GLP-1 vomiting?
Probably not on its own. A 1.5ml squeeze delivers a much smaller mineral load than a full oral rehydration sachet, which typically carries several hundred milligrams of sodium. Buoy suits everyday topping-up; significant fluid loss needs a proper rehydration product, and persistent vomiting needs your prescriber.
Does it contain sugar or sweeteners?
No. Per serving it is 0 calories, 0g carbohydrate and 0g sugar, with no sweeteners of any kind — which is the main reason to prefer it over flavoured sachets if you are managing weight.
How much does Buoy cost?
Around $39.95 for a three-pack, with roughly 20% off on Subscribe & Save. The subscription works out at about $1 a day.
What does it taste like?
It is marketed as near-flavourless and blends into any drink. Reviews are genuinely mixed — a substantial number of users describe a noticeable mineral taste, so it is less invisible than advertised.
Verdict
3.6 / 5
The right format for a GLP-1 — no sugar, no extra drink to force down, about $1 a day — held back by undisclosed doses and a squeeze that cannot do a sachet’s job.
The design solves a real problem elegantly. Sugar-loaded electrolyte drinks are a poor fit for people trying to lose weight while feeling nauseated, and drops you can add to coffee sidestep that entirely at a lower monthly cost than sachets.
What keeps it in the middle of the range is that we cannot tell you how much sodium you are getting, and the volume suggests not much. Treat Buoy as a daily habit rather than a rescue product, and keep something with a published dose for the days after a dose increase.
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 Buoy Hydration Drops 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
Try One Bottle Before Subscribing
Taste reviews are split, and an electrolyte product you dislike is one you will not use. Keep a sachet product on hand for the harder days.