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What is a food and drug interaction?

A food and drug interaction is when the foods (and drinks) you consume change the effects of the drug on the body. The timing and amount of food you eat can also affect how well medication works. Food-drug interactions can occur whether you are taking prescription or over-the-counter medications, .

FAQ Frequently asked questions

Why can't I have grapefruit juice if I am taking statins?

Grapefruit juice can increase the chance of side-effects if you are taking statins, such as atorvastatin, simvastatin or lovastatin. This is not the case for all statins so speak to your doctor or pharmacist if you have any …

Why shouldn't I have dairy products such as milk with tetracycline?

Calcium in dairy products binds to tetracycline, preventing its absorption in the body and therefore reducing its effectiveness as an antibiotic.

Should I always take medication with meals?

This is not always advisable. Medicines can work faster or slower, better or worse, depending on whether you take them on a full stomach or not. The information label or sheet that comes with your medication will tell you whether it is best taken …

Is it okay to take medications with a glass of milk?

Some medications can be taken with milk if they upset your stomach, but with others, milk can reduce the therapeutic effect. For example, milk binds to the antibiotic tetracycline, preventing its absorption in the intestine and therefore …

Can food only interact with prescription medications?

Food and drink can interact with both prescription and over-the-counter medications. Always read the label and speak to your doctor for advice on correctly taking new medications.

I take high blood pressure medications, should I be taking a potassium salt substitute?

Some medications used to control blood pressure can make your body lose potassium, so you may be prescribed a potassium supplement by your doctor. However, other blood pressure medications can prevent …

Can I take medications and vitamin supplements at the same time?

Sometimes medications can interact with vitamin supplements. Speak to your doctor or pharmacist before mixing any medications and supplements.

Can I take alcohol and medication at the same time?

As alcohol can interact with a range of medications, causing side-effects such as liver damage or drowsiness, it is best to consult your doctor about consumption of alcohol.

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About this article

Author: Kellie Heywood
First answered: 17 Nov 2014
Last reviewed: 19 May 2018
Rating: 4.5 out of 5
Votes: 616 (Click smiley face below to rate)
Category: Safe handling of medications

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