Talk to the doctor or pharmacist before taking Glyceryl Trinitrate tablets if the patient has: severe liver or kidney problems; an under active thyroid gland; had a recent heart attack; low body temperature (hypothermia); poor nutrition due to an unbalanced diet or digestion problems (malnutrition); abnormally low levels of oxygen in the blood (hypoxaemia); very low blood pressure, low blood volume or conditions that lower blood volume in the heart; any of the following heart conditions: narrowing of heart valves, inflammation of the heart, build up of fluid around the heart or heart failure; disease of the blood vessels supplying the brain (cerebrovascular disease).
Glyceryl Trinitrate tablets with alcohol: The patient is advised not to drink alcohol with Glyceryl Trinitrate tablets, as some of the effects of this medicine are increased.
Glyceryl Trinitrate Tablets contains lactose: If the patient has been told he/she has an intolerance to some sugars, contact the doctor before taking this medicine, as it contains lactose.
Driving and using machines: As glyceryl trinitrate can cause dizziness the patient should make sure he/she is not affected before driving or operating machinery, especially if taken with alcohol.