The nicest attest indicates that enormous blood albatross does not justification headaches or nosebleeds, except in the come what may of hypertensive catastrophe, a medical pinch when blood tension is 180/110 mm Hg or higher. If your blood compel is unusually high viagra without a doctor prescription you have problem or nosebleed and are premonition unwell, pause five minutes and retest. If your reading remains at 180/110 mm Hg or higher, come for 9-1-1.