Top 5 Aspartame-Free Alternatives to Diet Coke for 2025

About one in five hipsters drink diet soda every day. Diet soda uses artificial or natural sweeteners to provide drinkers with less than 5 calories and 0 grams of sugar. A can of regular soda, on the other hand, contains 140 calories and 39 grams of sugar.

Top 5 Aspartame-Free Alternatives to Diet Coke

Most of the daily popular low-calorie colas contain aspartame, such as my favorite Zero Sugar Pepsi, Zero Sugar Coca-Cola, Zero Sugar Mountain Dew, Zero Sugar Ginger Ale, etc.

If you want to avoid aspartame, here are 5 selected sodas to try:

#1. Zevia Zero Calorie Soda, Cola

($4.98 FROM Walmart - Get Up To 4% Cash Back)

• Calories: 0

• Sugars: 0g

• Caffeine: 45mg

• Ingredients：Carbonated water, natural flavors, stevia leaf extract, tartaric acid, caffeine, citric acid.

Why we love it:

We all love the boost we get from caffeine, but current sodas on the market are loaded with either sugar or artificial sweeteners, as well as a bunch of exotic supplements. Zevia has created a line of zero-calorie sodas with 45 milligrams of caffeine.

Stevia leaf extract is the primary sweetener here, so Zevia earns praise for not using aspartame like most zero sugar sodas.

Zevia has a bold and unique flavor with a hint of spice, a hint of citrus.

All flavors of Zevia Soda are sugar-free, 0 calories, caramel-free, and naturally sweetened with stevia, so you can enjoy your favorite beverage guilt-free without any compromises.

Zevia is the first beverage brand exclusively focused on offering naturally sweetened, zero-calorie beverages. In addition to being a better-for-you option, Zevia is delicious and affordable, less expensive than 64% of all non-alcoholic beverages and increasingly at arm’s reach for consumers across channels.

With formulas that are Non-GMO Project Verified, and certified Vegan, Kosher and Gluten Free, Zevia is sold in more than 32,000 stores across the U.S. and Canada, including Walmart, Sam's Club, Whole Foods Market, Sprouts Farmers Markets, Safeway, Kroger and Target. If you buy online at some of these retailers, you'll also get some cash back offers.

Zevia Soda is a healthier alternative to traditional soda and diet soda.

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#2. Green Cola

($34.07 FROM Walmart - Get Up To 4% Cash Back)

• Calories: 0

• Sugars: 0g

• Caffeine: 37mg

• Ingredients: Carbonated Water, Caramel Color, Tartaric acid and malic acid, Stevia leaf extract sweetener, natural flavourings, natural caffeine from green coffee beans. 

Why we love it:

Our favorite non-aspartame soda comes from Green Cola because it tastes closest to Diet Coke and also contains wake-boosting caffeine.

In 2012, Green Cola was launched as the first carbonated soft drink to be sweetened by stevia, combining a great taste with zero calories, no aspartame, no sugar, no artificial sugar substitutes or other health-compromising ingredients.

Green Cola is naturally caffeinated with green coffee beans. It contains the unique benefits of unroasted coffee beans that are a natural caffeine source filled with antioxidants. 

Green Cola has managed to win over people with its authentic taste. We can buy it in more than 40 countries, also on Walmart, Amazon, etc., and we may also get cashback offers for online purchases.

Green Cola’s original cola flavor is available in an eight-pack of 12 oz cans, a 20 ounce single serve PET and a 2 Liter family size PET. The brand also sells sparkling sodas in four fruit flavors: lemonade, lemon lime, sour cherry and orangeade. 

#3. OLIPOP Vintage Cola

($35.88 FROM Walmart - Get Up To 4% Cash Back)

• Calories: 35

• Sugars: 2g

• Caffeine: 0mg

• Dietary Fiber: 9g
  

• Ingredients: Carbonated Water, OLISMART (Cassava Root Fiber, Chicory Root Inulin, Jerusalem Artichoke Inulin, Nopal Cactus*, Marshmallow Root*, Calendula Flower*, Kudzu Root*), Cassava Root Syrup, Apple Juice Concentrate, Lime Juice, Natural Cola Flavor, Alpinia Galanga Root*, Stevia Leaf*, Himalayan Pink Salt, Green Tea Caffeine*, Natural Vanilla Flavor, Natural Caramel Flavor, Cinnamon*

Why we love it:

OLIPOP isn't a zero-calorie soda, but it contains only 5 grams of sugar and 9 grams of fiber per can to support gut health - more nutrients than regular Diet Coke.

OLIPOP is ‘a new kind of soda’ that offers the experience of enjoying cola without the guilt. It has grown into a nationwide brand and a favorite among Gen Z and millennial consumers, who gravitate to the brand’s eye-catching packaging and nostalgia-inducing flavors like root beer and vintage cola.

OLIPOP is available in a variety of flavors including Vintage Cola, Orange Squeeze, Strawberry Vanilla, Cherry Vanilla, Lemon Ginger, Root Beer, Orange Cream and Classic Grape. 

OLIPOP is definitely one of the healthiest sodas out there, with an amazing sweet taste but no artificial sweeteners or high fructose corn syrup. Instead, it contains natural stevia leaf extract and tapioca root syrup, giving it its amazing flavor without artificial ingredients.

OLIPOP is non-GMO, paleo, vegan-friendly and gluten free and is available online as well as more than 8,000 grocers and convenience stores nationwide including Walmart, Sam's Club, Costco, Target, Kroger, Safeway and Wegmans.

Yes, some retailers also offer cash back offers of up to 15% on online shopping, which can allow us to save some money.

If you are looking for a soda alternative, I would recommend the low calorie OLIPOP. It also combines the classic soda taste with the benefits of plant-based fibers, prebiotics and other botanical ingredients proven to balance the body's microbiome and promote overall health.

#4. Virgil’s Zero Sugar Cola

($31.99 FROM Walmart - Get Up To 4% Cash Back)

• Calories: 35

• Sugars: 2g

• Caffeine: mg

• Dietary Fiber: 9g

• Ingredients: Sparkling filtered water, sweetener blend (erythritol, stevia leaf extract), natural flavors, caramel color, citric acid.

Why we love it:

Virgil's is America's #1 selling independent, full line of natural craft sodas. Virgil's Zero Sugar range of sodas offers drinkers a feel-good, guilt-free, satisfying take on a classic treat.

They come in a variety of flavors such as Root Beer, Vanilla Cream, Black Cherry, Lemon Lime, Cola, and Orange Cream.

All of Virgil’s zero sugar beverages are made with a proprietary blend of natural flavors, natural sweeteners and contain no artificial preservatives, artificial colors or GMO-sourced ingredients.

Virgil's contains natural sweeteners derived from monk fruit and stevia and contains no aspartame.

As for tasting Virgil's, most people consider it a good alternative to Diet Coke and when you open a cold can of Virgil's you get an indescribable feeling that nothing else can compare to. But some people think that the vanilla flavor of Virgil's is a bit stronger than its cola flavor.

I think this cola tastes pretty good, crafted from high-quality natural ingredients. If you are a sugar-free cola lover, give this a try!

#5. Diet Rite Pure Zero Diet Cola Soda

($25.95 FROM Walmart - Get Up To 4% Cash Back)

• Calories: 0

• Sugars: 0g

• Caffeine: 0mg

• Ingredients: Carbonated Water, Caramel Color, Phosphoric Acid, Sucralose, Citric Acid, Potassium Benzoate (Preservative), Acesulfame Potassium, Natural Flavors, Acacia Gum, Potassium Citrate.

Why we love it:

Diet Rite was launched in 1955, initially as a weight loss product and later as a health drink. Today, it is owned and distributed by Keurig Dr Pepper.

In 2000, Diet Rite was reformulated to replace aspartame with Splenda brand sucralose and Sunnet brand acesulfame potassium. It became the first major diet soda in the United States to use neither aspartame nor saccharin as sweeteners.

It says "Pure Zero" right on the packaging, so we're well aware of Diet Rite's unparalleled "Zero" benefits. With zero calories, zero carbs, zero caffeine and zero sodium, this is a delicious soda option for the health-conscious.

Diet Rite sodas deliver the satisfying taste of carbonated beverages without the guilt, making them a great choice for those watching their sugar intake.

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