Used for the treatment of gastrointestinal stromal tumors and blood cancer, Veenat 400mg Tablet is supposed to be taken along with both food and water. Dosage of the drug should not be altered or discontinued without consulting a medical practioner. The drug is known to cause blurred vision and dizziness. Under such circumstances, patients must not operate heavy machinery or drive. Other side effects of the drug include rapid weight gain, swelling and water retention. Consulting physicians should be notified about dietary supplements, over the counter medications and health conditions that the patient might have.