The benefits of Omnic Ocas tablets in treating urinary retention. Omnic Ocas tablets help relax the prostate muscles, which reduces the symptoms of benign prostatic hyperplasia in men. It also reduces difficulty in urinating, lack of good flow, and the feeling of an urgent need to urinate all the time, especially at night. It may cause a sudden drop in blood pressure, causing a feeling of dizziness or fainting, and for those who have it disappears after continuing with the medication. Ingredients of omnic ocas tablets omnic ocas tablets contain tamsulosin, which is one of the alpha receptor blockers that stimulates the blood vessels to relax, allowing blood to pass through them more easily. Alpha blockers are also used to treat high blood pressure, but this does not apply to tamsulosin, as it is not used for high blood pressure.