Bret Michaels. Bret Michael Sychak (born March 15, 1963), professionally known as Bret Michaels, is an American singer-songwriter and musician. He gained fame as the lead singer of the glam metal band Poison who have sold over 50 million records worldwide and 15 million records in the United States alone.
Sildenafil Sandoz PHT 20 is used to treat pulmonary arterial hypertension (high blood pressure in the blood vessels in the lungs). Sildenafil Sandoz PHT 20 brings down the blood pressure by relaxing these vessels.
Vardenafil (INN) is a PDE5 inhibitor used for treating erectile dysfunction that is sold under the trade names Levitra (Bayer AG, GSK, and SP), Staxyn in India, and Vivanza in Italy.ardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis).