A "nitrate" headache may occur at the beginning of the treatment. When continuing therapy, it usually decreases after a few days.
After the first dose or after increasing the dose, blood pressure may decrease and / or develop orthostatic hypotension, which may be accompanied by tachycardia, dizziness, and weakness.
Very rarely there may be nausea, vomiting, reddening of the face and skin allergic reactions.
In rare cases, a marked decrease in blood pressure is accompanied by a heavier symptom of angina (paradoxical reactionon nitrates).
Occasionally, there were cases of collapoid states, sometimes with bradyarrhythmia and syncope.
Notes:
The development of tolerance, as well as cross-tolerance with other nitrocompounds in long-term continuous treatment with high doses of isosorbide mononitrate, is described. To prevent a decrease or loss of effectiveness, you should avoid continuous intake of high doses of the drug, as well as prescribing the drug more than 2 times a day.
The use of Monolong can lead to transient hypoxemia due to the relative redistribution of blood flow to the hypoventilation alveolar segments. This may be the trigger mechanism of ischemia in patients with coronary heart disease.