purchased half in the first? As per doctor advice im medicated to Himalaya tantex royal for 30 days. I purchased half in the first purchase and second half in the next purchase. By mistake i took 35 days instead of 30 days. At the intial stage the erection seems good. But at the end of 35 days i feel little difficult to gain erection. This is bcoz of medication. Pls advice me. Thanks.