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Another treatment regimen is injection therapy. One of the following drugs is injected into the penis: papaverine, phentolamine, and prostaglandin E1. Other blood tests: Evaluation for hemochromatosis, lupus, scleroderma, zinc deficiency, sickle cell anemia, cancers (leukemia, colon cancer) are some of the other potential tests that may be performed based on each individual's history and symptoms. buy levitra generic buy levitra generic In a study of mice, researchers "found a complex positive feedback loop in the penile nerves that triggers waves of nitric oxide to keep the penis erect," a release stated. After the initial release of nitric oxide, the nerve impulses that begin in the brain or from physical stimulation are sustained, thanks to a biochemical process called phosphorylation. This process ensures that nitric oxide continues to be released, maintaining the erections of both mice and men. Penile injections: The injection of drugs such as alprostadil directly into the tissues of the penis to trigger an erection was more common before the advent of new drugs such as sildenafil. The drugs relax muscles and increase blood flow to create an erection. They are also available as pellets to insert in to the urethra (the opening at the tip of the penis). Medication (tablets taken by mouth) In 1998, the first tablet to treat ED was launched. This made a huge impact on the treatment of ED. There are now four different tablets licensed in the UK to treat ED: Apomorphine (trade name Uprima®) works by increasing the level of certain chemicals in the brain which are involved in sending messages down nerves to the penis when you are sexually aroused. You take a tablet, which dissolves under the tongue, 20 minutes before you plan to have sex. Sildenafil should be used cautiously in men on alpha blockers such as doxazosin (Cardura), terazosin (Hytrin), and tamsulosin (Flomax). There have been occasional reports of low blood pressure in men who have taken the two classes of drugs simultaneously and therefore it is recommended that there be at least a span of four to six hours between the ingestion of sildenafil and alpha blockers. buy levitra generic buy propecia in canada buy propecia
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Blood glucose levels: Abnormally high blood glucose levels may be a sign of diabetes mellitus.