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The Copyright Advisory Network (CAN) exists to help librarians understand copyright law and appreciate the important role that they can play in serving the public “to advance the progress of science and the useful arts.” We use the Network to respond to copyright questions posed by librarians, but perhaps—more importantly, help librarians learn about copyright from a broader perspective, primarily its impact on information policy issues fundamental to our profession, including free expression, equitable access to information, censorship, and intellectual freedom.
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We are librarians that participate in or are a member of the OITP Copyright Education Committee of ALA. (We have a keen interest in copyright and some of us are designated copyright specialists or scholarly communication librarians at our home institutions. We volunteer our time to maintain the Network by responding to queries, creating copyright resources and sharing copyright news. Our goal is to provide a response from a CAN user within a 24-hour period, Monday through Friday. We are out of commission weekends and holidays.
IMPORTANT NOTE: We do not give legal advice. We provide informed opinions. Responses will likely be imprecise because with copyright, there are no definitive answers. We believe that discussion will help identify community norms while recognizing individual choice. As information professionals, we serve the public and support our respective institutional missions; responses from the CAN’s scholars should be viewed through that lens.
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Marketed as Seretide Accuhaler in United Kingdom
Manufactured by: Allen & Hanburys
This product is offered for sale by UK Medicine Ltd. of United Kingdom
Product of United Kingdom
Manufactured by: Various Generic Manufacturers
This product is offered for sale by UK Medicine Ltd. of United Kingdom
The drug Sildenafil citrate is sold under the brand name Viagra by the pharmaceutical company Pfizer. Other brand names for the drug are Revatio and both serve the same function. The drug is prescribed in cases of erectile dysfunction and pulmonary arterial hypertension. It is known to be effective in increasing exercise related stamina in both men and women. It has been available in the markets since then. In a clinical trial on 3000 patients, Viagra was found effective for sustaining erection in 60 to 80% of the patients. Viagra has received approval from the Food and Drug Administration of USA in March 1998.
Viagra is mainly used to treat erectile dysfunction. It is a drug that is administered orally. The pill is a small one and can be easily taken. It needs to be between one and half to four hours before sexual intercourse. Taking the pill one hour before is the ideal time. Viagra is also effective in keeping high blood pressure under control. The drug is effective in both cases because of the mechanism of action. Sildenfil citrate helps to relax muscles and increases blood supply to certain organ. This is why the drug is effective for the above mentioned problems and has also been used by sportsmen for enhancing their performance.
Viagra is available in the form of an oral pill. This tiny, blue pill comes in a diamond shape usually in a packet of four. There are a range of doses available from 25mg to 100mg. In case of erectile dysfunction Viagra needs to be taken a minimum of half an hour to four hours before sexual intercourse. The dose of Viagra for erectile dysfunction is usually 25 mg to 100 mg taken not more than once per day between 30 minutes and 4 hours prior to sexual intercourse.
Viagra is not a medicine that is prescribed in a fixed dose format. Since it is linked to sexual performance it needs to be taken only before intercourse. So there are health problems in case of missing a dose.
Excessive consumption of Viagra can pose health problems. If there is overdose, it is important to seek medical help immediately. Usually in such cases the individual will experience dizziness, pain in the chest and uneasiness. There could be nausea and some irregularities in heartbeats.
Viagra can sometimes cause vision related problems. Therefore people who have a history of eye-related problems must exercise caution while taking the drug. Usually patients above 50 years of age are required to take a detailed medical examination before the doctor can prescribe the drug. As is always prescribed, patients must provide their compete medical history before the doctors prescribes the drug. Any pre-existing complications with erection should be reported. Also since Viagra can result in irregular heartbeats, patient need to inform the doctor if they have any history of hart related problems, or problems associated with the kidney or liver.
Remember that there are some precautions that the patient who takes Viagra must follow. For instance alcohol should not be taken with the drug, as it is more likely to have side effects. Usually Viagra can cause some amount of dizziness. There can also be some problems with urination. In a small minority, there have been vision related problems or even rashes on the skin. It is particularly important that these three problems should be reported as an emergency. There could be other side effects also such as swollen feet, especially around the ankles. At times there could be a change in the sense of hearing or even loss of hearing. These are uncommon though, and if observed, they should be reported soon. Some patients also experience a kind of pain or uneasiness in the chest. Often this pain could extend as far as the arm or one side of the body also. It could often begin as a slight tingling in the chest region, at the time of sexual intercourse. Although it might seem too minor, a doctor must be consulted immediately. Painful erection or one that lasts for too long is also something that needs to be reported to the doctor. Apart from these side effects there are also minor ones. There could be a headache or pain in the back and lumbar region. Some people might also experience a blocked nose or some kind of redness on their face. This could be accompanied by a warm sensation on the neck, chest or face. Some people also face problems related to their memory. None of these side effects should ever be overlooked. It is best to consult a doctor at the right time rather than attempting self-medication or any home remedies. If the patient experiences any of the above suddenly such as losing vision during sexual intercourse of feeling giddy then it must be treated as an emergency.
Viagra works not only in erectile dysfunction cases but also those, which are related to blood pressure or hypertension. Therefore the drug interactions are likely to be several. It is necessary for patients to inform the doctor about all other medications that they might be taking. This is in order to avoid any interactions between two drugs and the ensuing complications.
Patients who are already taking some nitrate medicines are especially told to avoid taking Viagra. Many of the drugs used for the treatment of tuberculosis such as:
Similarly some drugs prescribed to people with HIV/AIDS can also cause complications. Most of the drugs used for heart disease and blood pressure such as:
This is also why patients with existing hypertension are not prescribed Viagra. Some drugs used in psychiatric conditions such as depression can also interact with Viagra. This includes the drug Nefazodone. Some kinds of antibiotic drugs or drugs used in fungal infections are also known to interact adversely with Viagra.
If you have any questions about buying discount Viagra online or any other prescription products you can contact our team of professional Patient Service Representatives or one of our pharmacists 24-7 by calling 1-800-226-3784.
Notice: The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.
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