Milk (regular cow's milk)
Dairy · Milk
Regular cow’s milk is only low FODMAP in very small amounts. A splash of 2 tablespoons (30 ml), the kind you’d add to tea or coffee, rates green with 0.9 g of lactose. A full cup (250 ml) carries 7.5 g of lactose and rates red. The good news: lactose-free milk is an almost identical swap.
Last updated 3 September 2026Serving sizes for milk (regular cow's milk)
A 2-tablespoon splash (30 ml) rates green. A full cup (250 ml) rates red.
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 2 tablespoons | 30 ml | Lactose 0.9 g | |
| 1 cup | 250 ml | Lactose 7.5 g |
Breakdown for 30 ml
Is milk (regular cow's milk) low FODMAP?
The FODMAP in milk is lactose, and it scales directly with volume. The tested 30 ml splash contains 0.9 g of lactose and rates green, while a 250 ml cup contains 7.5 g, more than seven times the 1 g level at which a portion rates high, so it lands firmly in red. There are no other FODMAP groups recorded in milk, which is why the fix is so clean: remove or pre-digest the lactose and the problem goes with it. Full cream and skim milk carry lactose alike, since it sits in the watery part of milk, not the fat.
Milk (regular cow's milk) and IBS: what to know
How much milk bothers you depends on your lactase, the enzyme that digests lactose, and that varies a lot from person to person. Some people with IBS handle milky tea all day but not a glass of milk; the data reflects exactly that gap between 30 ml and 250 ml. Lactose also hides in milky drinks like lattes, milkshakes and creamy sauces, where the volume creeps well past a splash. If you suspect lactose, testing your response with a measured cup during reintroduction tells you more than guessing.
Gut-friendly ways to eat milk (regular cow's milk)
The easiest swap is lactose-free milk, which is regular milk with the lactase enzyme added, so it tastes and cooks the same in porridge, sauces and coffee. Among plant milks, almond milk and rice milk rate green at their tested serves. And you don’t have to give up dairy broadly: hard cheeses like cheddar are naturally very low in lactose and rate green, and butter is green-rated too.
Frequently asked questions
Can I drink milk with IBS?
In small amounts, yes: 2 tablespoons (30 ml) of regular milk rates green, so milky tea or coffee is usually fine. A full 250 ml cup carries 7.5 g of lactose and rates red. If a proper glass of milk is what you’re after, lactose-free milk gives you that without the lactose load.
Is milk in coffee OK on a low FODMAP diet?
A dash is. The tested 30 ml serve, about 2 tablespoons, rates green, which covers an ordinary splash in tea or filter coffee. A latte or flat white is different: those contain closer to a cup of milk, and 250 ml rates red with 7.5 g of lactose. Order lactose-free or almond milk for milky coffees.
Is lactose-free milk really the same as regular milk?
Nutritionally it’s the same product: lactose-free milk is regular cow’s milk with lactase added, which splits the lactose into simpler sugars your body absorbs easily. That’s also why it tastes slightly sweeter. It behaves identically in cooking and coffee, and it rates green in our guide.
Do I need to avoid all dairy with IBS?
No. Milk’s only recorded FODMAP is lactose, and plenty of dairy is naturally low in it. Hard and aged cheeses like cheddar rate green, butter rates green, and lactose-free versions of milk and yoghurt exist for the rest. It’s a lactose question, not a dairy ban.
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