Quick answer: Ultima wins for mineral completeness and price. Liquid I.V. wins for taste and dissolvability. If you want an everyday electrolyte powder, Ultima is the stronger value. If you care most about flavor and a higher-sodium formula, Liquid I.V. is the better fit.

Here’s the comparison, point by point.

Mineral Completeness: Ultima Wins

Winner: Ultima

The biggest difference between these two powders is the range of minerals they provide.

Ultima Replenisher contains sodium, potassium, magnesium, calcium, and chloride, plus zinc. The sugar-free Liquid I.V. formula provides sodium and potassium but does not provide the same calcium, magnesium, and chloride coverage.

That makes Ultima the better choice if you want several different electrolytes in one serving.

However, there is an important trade-off: Liquid I.V. provides much more sodium. So if your priority is specifically replacing sodium after heavy sweating, the higher-sodium formula may be more relevant than having a wider range of minerals.

Best for mineral variety: Ultima.

Taste: Liquid I.V. Wins

Winner: Liquid I.V.

Liquid I.V. has the advantage if flavor is your first priority.

Its sugar-free formula combines a pronounced fruit flavor with allulose and stevia. The result is a sweeter, more beverage-like taste.

Ultima is also easy to drink, but some flavors can taste noticeably sweet. Individual preferences vary considerably, so the flavor you choose matters.

Best for flavor: Liquid I.V.

If you prefer something lighter and less intense, Ultima may actually be the better choice for you.

Price: Ultima Wins

Winner: Ultima

For frequent use, Ultima is considerably easier on the wallet.

A 90-serving Ultima container works out to approximately $0.47 per serving, while Liquid I.V. is around $1.56 per serving at retail, although prices can be lower through retailers such as Costco.

That difference becomes significant when you’re using electrolytes every day.

For example, at one serving per day, the difference between roughly $0.47 and $1.56 per serving can add up to hundreds of dollars over a year.

Best value: Ultima.

Sweetener & Aftertaste: Liquid I.V. Wins

Winner: Liquid I.V. Sugar-Free

Ultima uses organic stevia leaf.

Stevia works well for many people, but some people notice the characteristic lingering sweetness or aftertaste.

The sugar-free Liquid I.V. formula uses allulose and stevia. Its combination was particularly clean-tasting, without a noticeable aftertaste during testing.

This is one of those categories where personal taste matters more than the ingredient list.

If you already enjoy stevia-sweetened drinks, Ultima shouldn’t be a problem.

If you’ve tried electrolyte powders before and disliked their stevia finish, Liquid I.V. Sugar-Free is worth considering.

Best for a clean finish: Liquid I.V.

Packaging: Ultima Wins

Winner: Ultima for regular home use

Both products are available in individual packets, making either option convenient for travel, hiking, workouts, or keeping in your bag.

Ultima has one additional advantage: it is available in larger 30- and 90-serving canisters.

That makes more sense if you drink electrolytes at home regularly.

Instead of opening a packet every time, you can simply scoop the powder into your bottle.

Best for travel: Tie.

Best for everyday home use: Ultima.

Dissolvability: Liquid I.V. Has the Edge

Winner: Liquid I.V.

Both powders mix reasonably well, but Liquid I.V. has the slight advantage.

In testing, Liquid I.V. Sugar-Free was rated “Great” for dissolvability, while Ultima was rated “Good.”

That’s not a huge difference, but it matters when you’re mixing a drink quickly.

If you don’t want powder collecting at the bottom of your bottle, Liquid I.V. has the advantage.

Best for mixing: Liquid I.V.

Actual Testing Experience: Both Have Different Strengths

Winner: Depends on what you value

This is where the comparison becomes more useful than simply looking at the nutrition labels.

Ultima’s strengths are its broad mineral profile, low cost, and everyday usability.

Liquid I.V.’s strengths are its taste, higher sodium content, and easy mixing.

So the better product depends on what happens after you actually start drinking it.

If you want something you can use regularly without spending much, Ultima makes more sense.

If you find yourself avoiding electrolyte drinks because they taste unpleasant, Liquid I.V. may be worth the extra cost.

And if sodium replacement is your main concern, the two formulas are quite different, so choosing based only on “which has more electrolytes” can be misleading.

Ultima vs. Liquid I.V.: Final Verdict

Category	Winner	Why
Mineral completeness	Ultima	More types of electrolytes
Taste	Liquid I.V.	Stronger flavor and good overall taste
Price	Ultima	Much lower cost per serving
Sweetener/aftertaste	Liquid I.V.	Allulose + stevia gives a cleaner finish
Packaging	Ultima	Larger canisters available
Dissolvability	Liquid I.V.	Slightly better mixing performance
Actual testing experience	Tie	Each has different strengths

So, Which One Should You Choose?

Choose Ultima if you want:

• More types of electrolytes
• Better value
• A lower-cost daily option
• Larger containers
• A lighter everyday hydration drink

Choose Liquid I.V. if you want:

• More sodium
• Stronger flavor
• Excellent taste
• Less noticeable sweetener aftertaste
• Slightly better dissolvability

The Bottom Line

Ultima is the better all-around value.

Liquid I.V. is the better choice for taste and higher sodium.

Neither is automatically better for everyone. The right choice comes down to what matters most to you: mineral variety, taste, price, sweetener, convenience, or how well it mixes.