Viagra is a drug that is used world-wide, not just in Australia, to treat erectile dysfunction. Viagra is used to treat erectile dysfunction as well as impotence in well qualified male patients. Viagra works quickly. Pharmacokinetics helps to explain how this drug works. Viagra comes in a little blue pill form. Male patients ingest the medication within about 30 minutes of sexual intercourse. Once the medication is absorbed in to the blood stream it helps to achieve and sustain an erection. Viagra increase the blood flow to the penis. The increased blood flow enables the male patient to achieve an erection. It is of the utmost importance that the patient be well educated on the proper use, dangers, and side effects to watch for while on this course of medications. If the patient is also on medication for high blood pressure, he needs to be taught to never take the two medications together. The treating physician should educate him on the proper way to take both medications. If both are taken together, this could lead to a very , very unsafe drop in blood pressure.
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Hypertension medication works to lower blood pressure. Viagra works to increase blood flow to the penis and genitals. While this is occurring it is also taking blood flow away from the heart. So, when taking these two medications together, too much blood is being redirected away from the heart. Thus, causing a very unsafe and potentially life threatening low heart rate. The patient should also be told to monitor the length of time that his erection lasts. Anything longer than four hours should send up a red flag to the patient (and his partner if he or she is aware that Viagra has been taken). Anything longer then the four hours needs to be addressed immediately. The medical term associated with an erection that will not end is called “priapism”. If priapism is not addressed this could lead to serious and permanent damage to the penis. This could require a trip to the local emergency room. One suggestion would be to call and speak to the on call physician in order to determine whether or not a trip to the emergency room is required.
Other side effects that should be watched for include the following. Loss (sudden) of vision in either one or both eyes. This is a rare, but very serious condition. This particular condition is called NAION (non-arteritic ischemic optic neuropathy)is a rare yet severe side effect. If sudden vision loss occurs, it is recommended to immediately stop use of Viagra and contact your doctor. Another side effect that is associated with the use if Viagra is a sudden hearing decrease or total hearing loss. Some patients have also reported tinnitus (or a ringing in the ears) or dizziness. If any of these instances occur than the patient needs to immediately cease taking the medication and contact the doctor as soon as possible. Before taking Viagra please be sure to tell your doctor about any and all medical diagnoses and medications. These all have factors on the risk of the medication, possible side effects, and overall side effects the medication has on and for the patient. Results will vary by patient.
I am self employed. General Practitioner in Melbourne, VIC. My special interest: male reproductive system.