Should Anastrozole Be Taken With Food? Timing Guide

Should anastrozole be taken with food or on an empty stomach?

Anastrozole can be taken with or without food. The NHS says so plainly: "You can take anastrozole with or without food." There is no required gap before or after a meal, and no food you must pair it with for the tablet to work.

Some medicines need careful timing. Certain bone-protecting tablets, for instance, must be taken on an empty stomach, as explained in our alendronic acid food timing guide. Anastrozole is not like that. If you take both, keep the two routines separate so you do not mix up the rules.

• With food — fine — a good choice if tablets sometimes leave you queasy, and easy to link to breakfast or dinner
• Without food — fine — works equally well, and may suit you if you take it first thing or last thing at night
• Swallowed whole with water — fine — a glass of water is all you need

Does it matter if I take anastrozole at the same time every day?

Yes, a steady routine matters more than the clock time or whether you have eaten. Anastrozole works by lowering oestrogen levels, and it does this best when you take it every day without gaps. You are usually prescribed it for several years, so a dependable habit is the main thing to build.

If you forget a dose, take it as soon as you remember, unless it is nearly time for the next one. In that case skip the missed tablet and carry on as normal. Never take a double dose to catch up. If you often forget, a phone alarm or a weekly pill organiser helps. Ask your pharmacist or breast care nurse if you are unsure what to do after a missed dose.

• Same time daily — best — keeps your routine reliable and makes missed doses obvious
• Varying by an hour or two — fine — a small shift is not a problem
• Skipping doses because you feel well — avoid — the treatment only works if you keep taking it, so talk to your team before stopping for any reason
• Doubling up after a missed dose — avoid — take the next dose at the usual time instead

How can I manage nausea when taking anastrozole?

Stick to simple meals, avoid rich or spicy food, and take small sips of water if you are being sick. Feeling sick is a common side effect, and the NHS advice is direct: "Stick to simple meals and do not eat rich or spicy food."

If the tablet itself seems to set it off, try taking it with a light snack instead of on an empty stomach. This is allowed, since food makes no difference to how the medicine works. If nausea does not settle, or you cannot keep fluids down, speak to your GP or specialist team rather than putting up with it.

• Plain toast, rice, crackers — fine — gentle on the stomach and easy to keep down
• Rich or fatty food — take care — can make feeling sick worse
• Spicy or acidic food — take care — may worsen nausea, so leave it until you feel better
• Small, frequent sips of water — fine — helps prevent dehydration if you are being sick
• Dried fruit and nuts — fine — nutritious, high-calorie, high-protein snacks if your appetite drops

What foods and drinks make anastrozole side effects worse?

No food or drink stops anastrozole working, but spicy food, caffeine and alcohol can make hot flushes worse. The NHS advice for flushes is to "Try cutting down on spicy food, caffeine, smoking and alcohol." Treat this as comfort management, not a list of banned items.

• Spicy food — take care — may make hot flushes worse, so cut down if you get them
• Caffeine (tea, coffee, cola, energy drinks, chocolate) — take care — can worsen flushes and disturb sleep, so avoid it in the afternoon and evening if you sleep badly
• Alcohol — take care — some people get hot flushes or redness when they drink, and avoiding alcohol may help if this happens to you
• Rich food — take care — may make nausea worse
• Water — fine — cool drinks through the day are a simple way to feel more comfortable
• Dried fruit and nuts — fine — good snacks if you have lost your appetite

What should I eat to protect my bones while taking anastrozole?

Eat plenty of calcium-rich foods every day and keep your vitamin D up. Anastrozole lowers oestrogen, and lower oestrogen can thin the bones over time, so many people on it have their bone health monitored. Your doctor may arrange a bone density scan or suggest a bone-protecting medicine. Food supports this but does not replace medical advice.

The NHS recommends adults aim for 700mg of calcium a day, which most people can reach through diet. If you avoid dairy, plenty of other foods supply it, and our guide to calcium without dairy lists them. Vitamin D helps your body use calcium. In the UK, the NHS advises considering a 10 microgram supplement through autumn and winter, and year-round for some groups. Ask your GP or pharmacist whether this suits you.

• Milk, yoghurt, cheese — fine — reliable calcium sources if you eat dairy
• Fortified plant milks and cereals — fine — useful calcium sources if you avoid dairy, so check the label
• Tinned fish with soft bones (sardines, pilchards) — fine — calcium plus vitamin D
• Tofu set with calcium, kale, broccoli — fine — plant sources of calcium
• Excess alcohol — limit — heavy drinking is linked to weaker bones and may add to flushes
• Weight-bearing exercise (walking, light resistance work) — helpful — supports bone strength alongside diet, with your team's go-ahead

How FreshPlate helps you plan meals around anastrozole

FreshPlate builds recipes around your medicines, so the advice above shows up in your meal plans without you having to remember it. If you tell us you take anastrozole, we favour gentle, simple meals when nausea is a concern, flag spicy and caffeine-heavy options if you get hot flushes, and build in calcium-rich ingredients for bone health.

FreshPlate's free food–medication interaction checker lets you look up anastrozole and any other medicine you take, so you can see which foods are fine and which call for care. It supports your conversations with your pharmacist or care team and does not replace them.

Frequently asked questions