Buy Relenza from Canadian & International Pharmacies
Relenza (Zanamivir)and/or alternatives
Relenza 5mg/Inh from $2.27 USD/doseRelenza 5mg/Inh
Manufactured by: GlaxoSmithKline UK Ltd
Product of United Kingdom. Shipped from United KingdomRxPrescription Required
General Information on Relenza
Relenza is an antiviral drug indicated for the treatment of influenza symptoms. The generic name of this drug is zanamivir.
Relenza is indicated for treating symptoms in patients who have been suffering from influenza for less than 2 days. This medication may also be given as a preventive measure for people who have not shown any flu symptoms yet.
You may buy Relenza for the treatment of influenza A and B viruses for adults or children of or over 7 years of age. However, this medication is not meant to treat the symptoms of a common cold. Since this medication only treats patients who have been symptomatic for 2 days or less, treatment should begin as soon as flu symptoms are noticed. The symptoms of flu include a stuffy or runny nose, sore throat, muscle pain, chills, and fever.
Side effects of Relenza
Relenza should not be administered through a ventilator or nebulizer. The medication, available as an inhalation powder, should not be mixed with any liquid before administration. This medication must also not be given to children below the age of 7 years.
Relenza may result in serious and even life-threatening bronchospasms or other lung problems. You must inform your doctor well beforehand if you suffer from chronic lung conditions like COPD (chronic obstructive pulmonary disease) and asthma. You must stop taking Relenza and talk to your doctor as soon as you can if you begin to experience severe breathing difficulties or wheezing.
You must keep a inhalable bronchodilator handy at all times if you have been prescribed Relenza after you disclosed to your doctor that you suffer from chronic lung conditions. Examples of suitable fast-action bronchodilators include pirbuterol, metaproterenol, bitolterol, and albuterol. You may ask your doctor about the best medication to be taken in your case.
In very rare cases, Relenza may cause certain severe side effects like self injuring tendencies, delirium, and confusion. Such side effects are more commonly seen in children, even though the exact reason for this side effect is still unknown. If Relenza has been prescribed for your child, you must keep a close watch on the behavior of your child. You must especially be wary of abnormal behavior and signs of confusion shown by the child.
Dosage of Relenza
You may buy Relenza as an inhalable powder in disk-like foils. Each foil pack contains 4 blisters of this medication. If you want to administer Relenza, you must place a disk pack into a ‘Diskhaler’, which is a device that comes pre-packed with the medication.
You must not use any ventilator or nebulizer for administering Relenza. Similarly, you must avoid administering any medication other than Relenza through the ‘Diskhaler’. Once you have applied the medication, you must always place the cover back on the device.
Relenza may interact with nasal flu vaccines like FluMist and reduce the efficacy of the vaccine. Therefore, you must avoid taking any nasal flu vaccines 48 hours after Relenza has been administered. You must not take Relenza within two weeks of the administration of such vaccines.
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What is a "Generic" medication/drug?
Generic drugs are medications that have the comparable medicinal ingredients as the original brand name drug, but which are generally cheaper in price. Nearly 1 in 3 drugs dispensed are "generic". They undergo comparative testing to ensure that they are the same as their "brand" counterparts in:
- Active Ingredient (e.g. "Pravastatin" is the active ingredient in brand name Pravachol)
- Dosage (e.g. 10 mg of the active ingredient)
- Safety (e.g. same or similar side effects, drug interactions)
- Performance (e.g. 10 mg of a "generic" can be substituted for 10 mg of the "brand" and have the same therapeutic result)
- Intended use (e.g. both "generic" and "brand" would be prescribed for the same conditions)
What this means is that "generic" medications can be used as a substitute of their brand equivalents with comparable therapeutic results. There are a few exceptions (examples are outlined at the end of this page) and as always you should consult your physician before switching from a brand name medications to a generic or vice versa.
What differences are there between generic and brand?
While generics and brand equivalent drugs contain comparable active ingredients, they may be different in the following ways:
- Appearance (e.g. the scoring or markings)
The color, shape and size of the medication come from the fillers that are added to the active ingredients to make the drug. These fillers that are added to the drug have no medical use and do not to change the effectiveness of the final product. A generic drug must contain comparable active ingredients and must be comparable in strength and dosage to the original brand name equivalent. Generic drugs can be more cost effective than purchasing the brand name.
Why do generics cost less than the brand name equivalents?
When a new drug is "invented", the company that discovered it has a patent on it that gives them the exclusive production rights for this medication. Once the patent expires in a country, other companies can bring the product to market under their own name. This patent prevents other companies from copying the drug during that time so they can earn back their Research and Development costs through being the exclusive supplier of the product. After the patent expires however, other companies can develop a "generic" version of the product. These versions generally are offered at much lower prices because the companies do not have the same development costs as the original company who developed the medication.
The main thing to realize here though is that the two products are therapeutically comparable. They may look different, and be called something different, but they are required to be have the same active ingredient.
How are Generic drugs tested to ensure quality and efficacy?
The two most generally accepted methods to prove the safety of a generic version of a drug are to either repeat most of the chemistry, animal and human studies originally done, or to show that the drug performs comparably with the original brand name drug. This second option is called a "comparative bioavailability" study. During this type of study, volunteers are given the original drug, and then separately later the generic drug. The rates at which the drug is delivered to the patient (into their blood stream or otherwise absorbed) are measured to ensure they are the same. Because the same active ingredient is used the major concern is just that it delivers the common chemical(s) at the same rate so that they have the same effect. Please note that the methods that the manufacturers use may vary from country to country.