Discontinue medications if there is sudden partial or complete loss of vision, proptosis or diplopia; migraine and embolic disorders; epilepsy, migraine, asthma, cardiac or renal dysfunction. History of depression, glucose tolerance and diabetic patients. My impair ability to drive operate machinery. Sudden withdrawal of allyloestrenol should be avoided as it leads to intermittent breakthrough bleeding; lactation. Pregnancy category: Not classified but clinically it is proven that Allylestrenol is safe during pregnancy & has no teratogenic effect on fetus in any trimester.