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| Photo by Volodymyr Hryshchenko |
Reasons :
1. Food and some drinks can affect the way these medicines work.
For example, taking some medicines while eating may prevent your stomach and intestines from absorbing the medicine, making it less effective.
2. Some foods can interact with your medicine by increasing or decreasing the amount of medicine in your blood to potentially dangerous levels or levels that are too low to be effective.
3. Some foods can neutralize the effect of certain medicines. Some examples of foods or drinks that can interact with medicines include:
- grapefruit juice
- cranberry juice
- foods high in vitamin K, such as leafy green vegetables
- salt substitutes or food supplements high in potassium, such as bananas.
You should follow the instructions you receive with your medicine. If you're unsure how to take your specific medicine or whether you can have anything to eat or drink before taking it, speak to your GP (general physician) or pharmacist (chemist).
A general rule for empty stomach medicines :
a. 1 hour before a meal.
b. 2 hours after a meal.
Forgetting these instructions on rare occasions is unlikely to do any harm, but taking these medicines with food regularly may mean they don't work.
"WITH" OR "AFTER FOOD"
Reasons :
1. To reduce side effects of nausea or vomiting- the medicines that can cause nausea and vomiting, it's better to take them after a meal.
Ex. - Allopurinol and Bromocriptine.
2. To reduce side effects of stomach irritation, including indigestion, stomach inflammation, or ulcers- Some medicines can irritate the stomach, and taking them with food will reduce this effect.
Biscuits
Sandwiches
Glass of milk
(are enough)
Ex. - Aspirin
NSAIDs (non-steroidal anti-inflammatory drugs)- ibuprofen and diclofenac.
Steroids such as prednisolone and dexamethasone.
3. Medicines to treat problems such as heartburn, reflux, or indigestion - Medicines called antacids are taken to prevent heartburn and acid reflux, and indigestion, which usually occur when acid is produced as food enters your stomach. Therefore, these medicines are most effective if taken immediately after, or during, a meal.
4. To ensure the medicine is not washed away - Preparations such as mouthwashes, liquid nystatin(antifungal mouthwash to avoid mouth thrush), and miconazole gel for oral thrush or mouth ulcers must be used after meals. This is because eating food washes the medicine away too quickly.
5. To ensure the medicine is absorbed into the bloodstream properly - Some medicines require food in the stomach and gut for the body to absorb them properly, such as the HIV medicine ritonavir.

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