What Are Low Sodium Drinks? A Complete Guide to Low Sodium Beverages

Low sodium drinks are beverages with reduced sodium content, generally labeled “low sodium” or below roughly 140 mg per serving.

Water, coffee, tea, and many juices are naturally low, but “low sodium” is a regulated US label term — and a drink can carry it while still delivering a meaningful sodium hit per container. The FDA sets the Daily Value at less than 2,300 mg per day, and some drinks marketed as low sodium stack up fast once you account for serving size.

What Are Low Sodium Drinks?

These are beverages meeting a per-serving sodium threshold or naturally below it, with exact numbers varying by brand, formulation, and serving size. The category spans plain water, tea, coffee, many juices, some diet sodas, and products specifically labeled low sodium.

The FDA defines claims per serving: “low sodium” is 140 mg or less; “very low sodium” is 35 mg or less. That per-serving framing matters most and is where readers get tripped up — a can or bottle drunk in one sitting may count as multiple servings, so actual sodium can far exceed the label front.

Medical guidance is stricter: Allina Health’s low-sodium diet sheet recommends under 70 mg per serving for people actively restricting sodium — tighter than the FDA threshold. You’ll find tested options in our roundup of the best low sodium drinks to buy if you’d rather skip the label math.

How Much Sodium Is Actually In Common Drinks?

Sodium varies widely by brand and type; the per-serving versus per-container gap is the biggest source of confusion.

Sports drinks, electrolyte beverages, and flavored waters — the wellness-positioned ones — tend to carry the most sodium, along with vegetable juices. A low-sodium vegetable juice at 140 mg per 8 fl oz looks fine per serving, but a 64 oz bottle holds 8 servings, and a can option at 200 mg shifts the math.

Where Does Hidden Sodium Hide?

The drinks most likely to surprise you don’t market themselves as salty: diet cola, zero-sugar flavored water, and sports drinks still contain sodium even when “diet” or “zero sugar” is on the front.

“Diet” and “zero sugar” describe sugar and calories, not salt — a drink can be zero-sugar while carrying sodium well above the low-sodium threshold per container. The lower-sugar electrolyte beverage above lands at 380 mg per bottle, a real contribution against a 2,300 mg daily value.

Carbonated options deserve caution: a Stanford Lifestyle Medicine guide groups lower-sodium fluid choices alongside a note to limit sodium-containing carbonated drinks, and one low-sodium sheet caps them at 24 ounces per day — a practical guardrail for heart or blood pressure management.

One caveat: low sodium does not override a fluid restriction. A drink can be low in sodium and still count against a prescribed daily fluid allowance; the two questions are answered separately.

What’s The Safest Low-Sodium Choice?

Plain water is the only zero-sodium default and the safest base. Medical sheets list coffee, tea, fruit juices and drinks, cocoa made with water, lemonade, and soda among low-sodium fluids — with the caveat that intake may still be limited under free-water restriction plans. But “low-sodium category” isn’t “low-sodium brand”: sodium shifts with formulation, so the same drink type can land on either side of the line.

Two habits do most of the work: read the Nutrition Facts panel, not the front, since the per-serving number is what the claim is based on; then multiply by servings per container. A drink clearing 140 mg per serving can still push past 300 mg for the full container — where most sodium budgets quietly blow out.