Sweet'N Low Zero Calorie Sweetener, Sugar Substitute 1

The Verdict

Let’s be clear about something upfront: Sweet’N Low isn’t new, isn’t trendy, and doesn’t pretend to be. It’s the pink packet that’s been sitting in diners since your grandmother’s era, and it’s still selling because it works. With 240 ratings averaging 4.8 stars on Amazon, this box of 100 packets has a loyal following — and after digging into what buyers actually say, I understand why.

What you’re actually getting

This is the classic Sweet’N Low formula: saccharin (the original zero-calorie sweetener, discovered in 1879) blended with dextrose and cream of tartar as bulking agents. Each packet delivers the sweetness equivalent of about 2 teaspoons of sugar for exactly zero calories. The box contains 100 individually wrapped packets — no scooping, no sticky measuring spoons, just tear and pour. As shown in the product image, it’s the unmistakable pink packaging that’s been a coffee shop staple for decades.

Performance and real-world use

The standout feature here is heat stability. Unlike aspartame (the blue packets) which breaks down under high temperatures, saccharin holds up fine in hot coffee, baked goods, and even cooked sauces. That’s a genuine advantage if you’re someone who wants a sweetener that doesn’t just work in cold drinks.

Buyers consistently praise its reliability. One reviewer noted, “I’ve used this in my coffee every morning for years. It dissolves instantly and gives me the sweetness I need without any weird texture.” Another mentioned, “Perfect for my iced tea — no clumping, no residue at the bottom of the glass.” That instant dissolution matters more than you’d think; some alternative sweeteners need aggressive stirring to fully incorporate.

What buyers consistently praise

The value proposition is hard to beat. A box of 100 packets typically costs less than a bag of sugar and lasts a month or more for daily users. Multiple reviewers specifically mentioned the longevity — “I go through one box every two months with two cups of coffee daily” — which makes the per-use cost almost negligible.

The zero-calorie aspect also gets consistent mention from people managing diabetes or watching their weight. The glycemic index of saccharin is effectively zero, so it won’t spike blood sugar. That’s a concrete benefit that many reviewers with type 2 diabetes highlighted as their primary reason for the purchase.

Where it falls short

Here’s the honest part: saccharin has a distinct character that isn’t for everyone. There’s a subtle metallic aftertaste that some people detect more strongly than others. If you’re used to the cleaner sweetness of stevia or monk fruit, Sweet’N Low will taste noticeably different. It’s not bad — it’s just old school.

Also, if you’re strictly keto, be aware that each packet contains about 0.9 grams of carbs from the dextrose bulking agent. It’s not enough to kick most people out of ketosis, but it’s not zero-carb like pure liquid sweeteners. For most coffee drinkers this is irrelevant, but strict macro-counters should know.

Who should buy this

This is ideal for three specific buyer types: daily coffee drinkers who want no-calorie sweetness without a premium price tag; people managing diabetes who need reliable, heat-stable sweetening; and anyone who genuinely prefers the classic saccharin taste they grew up with. If you’re a foodie exploring artisanal sweeteners or someone who hates any hint of aftertaste, look elsewhere.

FAQ

Does it dissolve in cold drinks? Yes, it dissolves reasonably well in iced coffee and tea, though you may need a few extra stirs compared to hot beverages.

Can I use it for baking? Yes, it’s heat-stable. One packet replaces two teaspoons of sugar, but note that sugar provides bulk and browning in recipes — you’ll need to adjust liquids and expect slightly different texture.

Is it safe? Saccharin was removed from the US carcinogen list in 2000 after extensive research. The FDA considers it safe for human consumption.

The Verdict

Buy it if: You want the most cost-effective, heat-stable, zero-calorie sweetener on the market and don’t mind a classic saccharin profile. This is a proven workhorse that delivers exactly what it promises, box after box.

Skip it if: You’re sensitive to aftertastes, prefer modern sweeteners like monk fruit, or need a strictly zero-carb option for keto.

Rating: 4.6/5 — It’s not glamorous, but it’s dependable, affordable, and does the job flawlessly for its intended use.

Where to Buy

👉 Check Price on Amazon →

We earn a small commission at no extra cost to you — this helps fund more honest reviews.

Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.