The physiological changes that occur in the body during the fasting period are well known; fluid levels decrease, electrolyte concentrations increase, and blood cholesterol and glucose levels decline. All of these changes affect the body’s response to medications and how effectively they are absorbed and utilized.

Therefore, there are certain recommendations regarding the use of medications during Ramadan that should be considered if your doctor has determined that you are able to fast.

These include the following:

1. For medications taken on an empty stomach, they should be taken at least two hours after Iftar or at least one hour before dinner.
2. For medications that need to be taken twice a day after meals, they should be taken after Iftar and Suhoor, taking them at the same time every day and delaying Suhoor as much as possible.
3. For medications that require three or more daily doses, a doctor should be consulted to prescribe alternatives with similar efficacy and extended-release formulations.
4. Meals should be taken at regular times as much as possible to coordinate with medication schedules, and drink plenty of fluids.
5. Foods high in salt, such as pickles, should be avoided, particularly in patients with hypertension.
6. For patients using anticoagulants such as warfarin, it is important to maintain a consistent intake of leafy green vegetables with meals.
7. Caffeinated beverages such as tea and coffee reduce iron absorption and increase blood levels of certain medications, including aspirin and some antidepressants.
8. Consumption of grapefruit should be avoided, especially by patients with high cholesterol and those taking blood pressure medications known as calcium channel blockers.

As for diabetic patients who use insulin, they should consult their doctor to adjust the doses and timing according to the following schedule:

- Long-acting insulin: Take it with the Ramadan iftar meal, adjusting the dose according to your doctor’s recommendation. The morning dose should be taken with iftar, and the evening dose with suhoor, with dose adjustments as advised by the doctor.

- Short-acting insulin: The second dose is omitted. The evening dose should be taken with suhoor, with dose adjustments according to the doctor’s recommendation.

Mixed insulin: The morning dose should be taken with iftar, and the evening dose with suhoor, with dose reduction as recommended by the doctor.

Finally, it is always essential to consult your doctor and pharmacist regarding medications while fasting during Ramadan.