Levitra was invented in 2002 by Bayer Pharmaceuticals, GlaxoSmithKline and Schering-Plough. It is a PDE5 inhibitor and is most commonly used to treat erectile dysfunction. Levitra is classed as an impotence agent, a broad class of drugs used to increase blood flow.
Buy Levitra tablets online in Australia
Levitra active ingredient is vardenafil, a chemical with a biological half-life of four to five hours. Vardenafil molecular formula is C23H32N6O4S and is typically taken as a pill or tablet. Vardenafil molecular structure is very similar to sildenafil, another common erectile dysfunction medication. Vardenafil works by preventing an enzyme known as phosphodiesterase, or PDE5, from remove cGMP. More cGMP results in more blood flow to the penis and so vardenafil both enhances erections and increases their duration. Levitra tablets also include a host of inactive ingredients, including microcrystalline cellulose, crospovidone, colloidal silicon dioxide, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, yellow ferric oxide, and red ferric oxide.
Levitra is a prescription-only drug in Australia, although it is freely available in online stores such as Edonlinestores.net. It comes in 2.5mg, 5mg, 10mg, and 20mg tablets, with the normal dose being one of the 10mg tablets. Levitra should be taken one to two hours before sexual activity and should only be taken once per day. Levitra costs one to three dollars per 10mg tablet, depending on how much is bought at once. Other forms, such as Staxyn and soft Levitra, are designed to dissolve on the tongue rather than being swallowed. Levitra is also occasionally marketed as Vivanza. There is no generic form of Levitra, due to its fairly recent invention, meaning that the drug can be fairly expensive depending on the source.
Like most drugs, Levitra is associated with numerous minor side effects. Warmth, redness, flushing, stuffy nose, headaches, dizziness, nausea, and back pain are all common. These are all nonlethal and not particularly dangerous. Other, less frequent side effects include stomach pain, acidic stomach, belching, heartburn, hoarseness, red eyes, sensitivity to bright light, indigestion, joint pain, loss of strength, nosebleeds, aches, burning in the chest, loss of color vision, congestion, coughing, loss of night vision, dry mouth, cramps, loss of appetite, running nose, shivering, and fever. There is no need to see a doctor if you experience one or more of these symptoms, although it is recommended that you stop taking Levitra.
More serious side effects are also possible. Back pain, jaw pain, arm pain, fast heartbeat, blindness, hives, rash, itchy skin, nervousness, pounding in the ears, puffy eyes, sweating, chills, eye pain, fainting, and crying have all been reported. These symptoms can potentially indicate a deadly problem, if not treated. Therefore, if you have one of these side effects, you should immediately call a doctor and stop taking Levitra.
None of these problems are common, affecting less than one percent of people taking Levitra. In extremely rare cases, Levitra has been known to cause heart attack and impotence. Levitra also interacts poorly with nitrate medications, which can cause life-threatening low blood pressure. Medications that increase the QT interval also combine badly with Levitra, particularly amiodarone. Levitra is not approved for use in women and its effects on pregnancies are unknown.