Mountain Dew Ingredients: What’s Really in the Can (2026)

Last reviewed: October 2026. Reflects the current U.S. 12 fl oz Mountain Dew formula. PepsiCo has committed to removing synthetic dyes across its portfolio by the end of 2027; Mountain Dew’s Yellow 5 is still on the label as of this review.

Mountain Dew is the soda with the most of everything: more sugar than Coke or Pepsi, more caffeine than any mainstream cola, a synthetic dye, two preservatives, a chelating agent, and — the detail people don’t expect — a small amount of real orange juice. It’s also the soda that dropped brominated vegetable oil in 2020, four years before the FDA banned it. Here’s all the Mountain Dew ingredients in order, what it does, and what the research says.

Quick answer: what’s in Mountain Dew?

The full Mountain Dew ingredients list

Twelve ingredients to Coke’s six. The extra six are there to keep a citrus-flavored, juice-containing drink stable and bright on a shelf: two preservatives, a metal chelator, an emulsifier, and a dye. Notice what’s missing — no phosphoric acid (this is citric-acid soda, not cola) and no caramel color.

Mountain Dew ingredients explained

Carbonated water Fine

Filtered water with dissolved CO₂. The base.

High fructose corn syrup Flagged

46 g per can — the highest of the major sodas, 7 g more than Coke, 5 more than Pepsi. Citrus sodas run sweeter than colas because there’s no bitterness to balance them. Your body treats HFCS and sugar nearly the same; the issue is 46 g of fast-absorbing liquid sugar with nothing to slow it. Daily intake at this level is one of the most consistent dietary predictors of weight gain, type 2 diabetes, and fatty liver disease in the research. A 20 oz bottle is 77 g, three days of the AHA’s limit for a woman. Our high fructose corn syrup breakdown covers the science.

Concentrated orange juice Trace

Yes, really. Mountain Dew contains a small amount of orange juice concentrate for flavor — small enough that the nutrition panel shows 0% vitamin C and the label makes no juice claim. It’s a flavor ingredient, not a reason to count it as fruit. It’s also, notably, more actual fruit than Fanta Orange contains.

Citric acid Fine

The tartness and the acidity. Mountain Dew’s pH is around 3.1 — comparable to cola — and dentists cite it specifically because the combination of high sugar, high acid, and the sipping habit of its heaviest drinkers produces a recognizable pattern of erosion. “Mountain Dew mouth” is a real term in Appalachian dental literature. The acid itself is harmless; the frequency of exposure isn’t.

Natural flavor Undisclosed

The citrus-lime taste. Plant-derived flavor compounds; details proprietary.

Sodium benzoate Flagged

Preservative one. Safe at these levels, with one documented quirk: benzoates can form trace benzene in the presence of ascorbic acid, heat, and light. Mountain Dew doesn’t list ascorbic acid — but it does list erythorbic acid, which is a close chemical relative and can participate in the same reaction. This is exactly the combination the FDA tested in 2006, and several citrus sodas reformulated after. Current levels in tested products have been well below the drinking-water limit. Low concern, but it’s the one ingredient pairing on this label worth knowing about. Our sodium benzoate breakdown explains the chemistry.

Caffeine 54 mg

54 mg per 12 oz — 60% more than Coke (34 mg), more than Diet Coke (46 mg), and the most of any mainstream non-energy soda. A 20 oz bottle is 91 mg, roughly a cup of coffee. For adults, a modest dose against the FDA’s 400 mg guidance; for kids, who are a large share of Mountain Dew’s drinkers, it’s a meaningful one, and it’s the second reason after sugar the AAP says children shouldn’t drink it regularly. The 16 oz Kickstart line adds more; Diet Dew keeps the same 54 mg.

Sodium citrate Fine

An acidity regulator that smooths the citric acid’s sharpness. Contributes to the 60 mg of sodium, which is modest.

Erythorbic acid Low concern

Preservative two — an antioxidant that stops the flavor and color from degrading. It’s a stereoisomer of vitamin C with almost no vitamin activity. On its own, harmless; its only significance is the benzene reaction with sodium benzoate described above.

Gum arabic Fine

Acacia tree sap, an emulsifier that keeps the citrus flavor oils dispersed. A soluble fiber at trace levels. No concern.

Calcium disodium EDTA Low concern

A chelating agent: it binds trace metals from water and the can that would otherwise dull the color and flavor and promote the benzene reaction. Widely used, approved at low limits, excreted unchanged. In the amounts in a soda, not a concern.

Yellow 5 (Tartrazine) Flagged

The neon. Yellow 5 is a synthetic azo dye, the second most-used dye in U.S. food, and one of the six in the 2007 Southampton trial that found dye mixtures increased hyperactivity in children. The EU has required a child-behavior warning on it since 2010; it’s part of the FDA’s voluntary phase-out announced in 2025; West Virginia bans it statewide from 2028. It’s also the one dye with a documented sensitivity reaction (hives, asthma in a small number of people), which is why it’s been required to be named on labels since 1980. PepsiCo has said it will remove synthetic dyes across its U.S. portfolio by the end of 2027, and Mountain Dew — whose color is its identity — is the product most people are watching. Our synthetic food dyes breakdown covers Yellow 5 and the timeline.

Mountain Dew nutrition facts

Mountain Dew Zero Sugar has more caffeine than the original (68 mg), and both diet versions use three sweeteners at once — the only mainstream sodas that do.

The BVO story

For decades, Mountain Dew contained brominated vegetable oil — a weighting agent that kept the citrus flavor oils from separating, made from vegetable oil bonded with bromine, the same element as in flame retardants. Studies linked heavy intake to bromine accumulation and, in rare case reports, neurological symptoms. A 2012 petition with 200,000 signatures pushed PepsiCo to announce it would remove BVO; it was fully gone from Mountain Dew by 2020. The FDA finally revoked BVO’s approval in July 2024, with a one-year compliance window. The current label has no weighting agent at all — the gum arabic and EDTA do the stabilizing work. If you see “BVO” in a Mountain Dew ingredient list, it’s an old photo.

Diet Mountain Dew and Zero Sugar

Both drop the 46 g of sugar and keep everything else, including Yellow 5 and both preservatives. They’re unusual in using three sweeteners — aspartame, acesulfame potassium, and sucralose — which covers the taste curve better but means you get every sweetener’s open questions in one can. Zero Sugar is the newer formulation, built to taste closer to the original, with 68 mg caffeine. Diet Dew keeps the original’s 54 mg. Either is a better daily choice than the sugared version, and neither is dye-free.

Is Mountain Dew bad for you?

The concerns, ranked by evidence:

1. Sugar. 46 g per can, 77 g per bottle. The strongest, best-established harm.
2. Teeth. High sugar, pH 3.1, and a sipping culture. The erosion pattern has its own name in dental literature.
3. Caffeine in kids. 54 mg is minor for adults and significant for children, who drink a lot of it.
4. Yellow 5. Modest behavioral effect in some children; rare sensitivity reactions; being removed by 2027.
5. Benzoate plus erythorbic acid. The benzene pairing. Levels tested low; worth knowing, not worth panicking over.
6. Everything else. EDTA, gum arabic, sodium citrate: stability ingredients with no meaningful evidence of harm at these doses.

Mountain Dew for kids, keto, and diabetes

Kids: this is the product the AAP’s guidance was written for — nearly double a child’s daily sugar limit, plus caffeine, plus a dye with child-behavior evidence. Keep it for occasions.

Keto: no, 46 g of carbs. Diet Dew and Zero Sugar are zero-carb.

Diabetes: among the worst common drinks for glucose control — fast liquid sugar, the most of any soda.

Cleaner alternatives

For citrus soda without the dye: Sprite or 7 Up are clear, caffeine-free, and still sugar sodas. Without the sugar: Zevia Lemon Lime (stevia, clear) or Olipop Lemon Lime. For the caffeine, coffee or green tea without the 46 g. If you want Mountain Dew, the honest version of the advice is the same as for any soda: with food, not daily, and not from a 20 oz bottle.

This article is for informational purposes and is not medical advice. Talk to a doctor or registered dietitian about your individual nutrition needs.