This may not be the case though in other parts of the country, especially inland where English is not so widely spoken. Can you buy Calpol in Spain? So Pfizer pivoted and found a new use for their drug. Based on this plan, safety information has been included in the summary of product characteristics and the package leaflet for Viagra, including the appropriate precautions to be followed by healthcare professionals and patients. The most common side effects with Viagra are headache, flushing, dyspepsia indigestion , visual disorders, including visual colour distortion and blurred vision, nasal congestion blocked nose , dizziness, nausea and hot flushes. For the full list of restrictions, see the package leaflet.22 hours ago · Viagra started life as a drug to treat hypertension, or high blood pressure. But it was also shown to produce vasodilation (or the widening of blood vessels), and an . Quite possibly. Many drugs that are prescription only in UK are available over the counter in Spain. I forgot to take my prescription indigestion tablets with me a couple of weeks . Viagra is used to treat adult men with erectile dysfunction (sometimes called impotence), when they cannot get or keep a sufficiently hard penis (erection) for .