Periodic check-ups are recommended. Risk factors for VTE. History of thromboembolic disorders, otosclerosis, multiple sclerosis, SLE, porphyria, melanoma, epilepsy, migraine, asthma, liver disease, endometriosis, uterine fibroids, HTN, cardiac or renal dysfunction & haemoglobinopathies. Diabetic patients. Pregnancy & lactation.