Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor. Many of these side effects can be managed, and some may go away on their own over time. Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects. Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not check with your doctor or seek medical attention.
Stop taking the medication and seek immediate medical attention if any of the following occur:. Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication. Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health.
These factors may affect how you should use this medication. Blood tests: If you take this medication for a long period of time, your doctor will likely want you to have blood tests to monitor your levels of red and white blood cells.
What Is Hydroxychloroquine Used For?
People with diabetes may find it necessary to monitor their blood sugar more frequently while using this medication. People without diabetes have also been known to experience low blood sugars while taking hydroxychloroquine. If you experience signs of low blood sugar cold sweat, cool pale skin, headache, or weakness , contact your doctor immediately. Blurred vision: While taking this medication, use caution when driving or operating machinery, since hydroxychloroquine can cause blurring of vision.
If your vision blurs, call your doctor. Eye damage: Irreversible damage to the retina of the eye has occurred for some people who take long-term or high-dosage treatment with hydroxychloroquine. Eye damage is more likely to occur if recommended doses are exceeded.
Your doctor will want you to have regular eye exams if you take this medication for a period of time. If you notice any new problems with sight or symptoms such as light flashes and streaks, stop the medication at once and call your doctor.
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Heart disease: Rarely, weakening of the heart muscle has been reported with the use of hydroxychloroquine. If you have heart disease, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Kidney disease: If you have kidney disease, you may need a lower dose of this medication.
Talk to your doctor about how this medication may affect your medical condition, how the medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Liver disease: If you have liver disease, you may need a lower dose of this medication. Muscle weakness: Call your doctor if you notice any signs of unusual or unexpected muscular weakness. Other medical conditions: If you have stomach, nerve, blood, or skin disorders, talk to your doctor about how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Suicidal behaviour: Rarely, people taking this medication may feel agitated restless, anxious, aggressive, emotional, and feeling not like themselves , or they may want to hurt themselves or others. This website contracts with dispensaries around the world that ship products directly to our customers. The items within your order may be shipped from any one of these jurisdiction depending on the availability and cost of the products at the time you place your order.
The products are sourced from these countries as well as others. Please note that the product appearance may vary from actual product received depending on availability. 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:.
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. While generics and brand equivalent drugs contain comparable active ingredients, they may be different in the following ways:. 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. 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.
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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. 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.
Serious side effects are rare. The most common side effects are nausea and diarrhea, which often improve with time.
Dosage and How to Use
Less common side effects include rash, changes in skin pigment such as darkening or dark spots , hair changes, and muscle weakness. Rarely, hydroxychloroquine can lead to anemia in some individuals. This can happen in individuals with a condition known as G6PD deficiency or porphyria. In rare cases, hydroxychloroquine can cause visual changes or loss of vision.
Such vision problems are more likely to occur in individuals taking high doses for many years, individuals 60 years or older, or those with significant kidney disease.
Hydroxychloroquine | Side-effects, uses, time to work
At the recommended dose, development of visual problems due to the medication is rare. It is recommended that you have an eye exam within the first year of use, then repeat every one to five years based on current guidelines. Although there are few drug interactions with hydroxychloroquine, to be safe be sure to tell your doctor about all of the medications you are taking, including over-the-counter drugs and natural remedies. This information is provided for general education only.