chemistry

Rosuvastatin

Rosuvastatin is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Rosuvastatin rather than just read about it. In short: Rosuvastatin, sold under the brand name Crestor among others, is a statin medication, used to prevent cardiovascular disease in those at high risk and treat dyslipidemia or hyperlipidemia. It is recommended to be used with dietary changes, exercise, and weight loss.

Key takeaways

Rosuvastatin belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Rosuvastatin to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Rosuvastatin from memory before moving on to harder problems.

Reference excerpt

Rosuvastatin, sold under the brand name Crestor among others, is a statin medication, used to prevent cardiovascular disease in those at high risk and treat dyslipidemia or hyperlipidemia. It is recommended to be used with dietary changes, exercise, and weight loss. It is taken orally (by mouth). Common side effects include abdominal pain, nausea, headaches, and muscle pains. Serious side effects may include rhabdomyolysis, liver problems, and diabetes. Use during pregnancy may harm the baby. Like all statins, rosuvastatin works by inhibiting HMG-CoA reductase, an enzyme found in the liver that plays a role in producing cholesterol. Rosuvastatin was patented in 1991 and approved for medical use in the United States in 2003. It is available as a generic medication. In 2023, it was the twelfth most commonly prescribed medication in the United States, with more than 42 million prescriptions. In Australia, it was the most prescribed medication in 2023.

Medical uses

The primary use of rosuvastatin is to prevent cardiovascular disease in those at high risk and to treat abnormal lipid levels in the blood.

Effects on cholesterol levels The effects of rosuvastatin on low-density lipoprotein (LDL) cholesterol are dose-related. Higher doses are more effective at improving the lipid profile of patients with hypercholesterolemia than milligram-equivalent doses of atorvastatin and milligram-equivalent or higher doses of simvastatin and pravastatin. A meta-analysis showed that rosuvastatin can modestly increase the levels of high-density lipoprotein (HDL) cholesterol in the blood, similar to other statins. A 2014 Cochrane review determined there was good evidence for rosuvastatin lowering non-HDL levels linearly with dose.

Side effects and contraindications Side effects are uncommon:

constipation heartburn dizziness sleeplessness depression joint pain cough memory loss or forgetfulness confusion The following rare side effects are more serious. Like all statins, rosuvastatin can possibly cause myopathy, rhabdomyolysis:

muscle pain, tenderness, or weakness lack of energy fever chest pain jaundice: yellowing of the skin or eyes dark colored, or foamy urine pain in the upper right part of the abdomen nausea extreme tiredness weakness unusual bleeding or bruising loss of appetite flu-like symptoms sore throat, chills, or other signs of infection numbness or tingling in fingers or toes (peripheral neuropathy) Allergic reactions can develop:

rash hives itching difficulty breathing or swallowing swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs hoarseness Rosuvastatin has multiple contraindications, including hypersensitivity to rosuvastatin or any component of the formulation, active liver disease, elevation of serum transaminases, pregnancy, or breastfeeding. Rosuvastatin is not prescribed nor used while pregnant, as it can cause serious harm to the fetus. With breastfeeding, it is unknown whether rosuvastatin is passed through breastmilk. Dose adjustments needs to be considered in individuals with renal failure. In mild to moderate renal failure (CLcr >30 to <60 mL/min/1.73 m2) a higher dose than 20mg daily is generally not recommended. Maximum dose of Rosuvastatin in patients with severe renal failure (CLcr < 30 mL/min/1.73 m2) without hemodialysis is 10mg daily. The risk of myopathy may be increased in Asian Americans: "Because Asians appear to process the drug differently, half the standard dose can have the same cholesterol-lowering benefit in those patients, though a full dose could increase the risk of side effects, a study by the drug's manufacturer, AstraZeneca, indicated." Therefore, the lowest dose is recommended in Asians.

Myopathy As with all statins, there is a concern of rhabdomyolysis, a severe undesired side effect. The U.S. Food and Drug Administration (FDA) has indicated that "it does not appear that the risk [of rhabdomyolysis] is greater with Crestor than with other marketed statins", but has mandated that a warning about this side-effect, as well as a kidney toxicity warning, be added to the product label.

Diabetes mellitus Statins increase the risk of diabetes, consistent with FDA's review, which reported a 27% increase in investigator-reported diabetes mellitus in rosuvastatin-treated people.

Drug interactions The following drugs can have negative interactions with rosuvastatin and should be discussed with the prescribing doctor:

Coumadin anticoagulants ('blood thinners', e.g. warfarin) can affect the removal of rosuvastatin Ciclosporin, colchicine Drugs that may decrease the levels or activity of endogenous steroid hormones, e.g., cimetidine, ketoconazole, and spironolactone Additional medications for high cholesterol such as clofibrate, fenofibrate, gemfibrozil, and niacin (when taken in lipid-modifying doses of 1 g/day and above) Specific protease inhibitors including atazanavir (when taken with ritonavir), lopinavir/ritonavir and simeprevir Alcohol intake should be reduced while on rosuvastatin to decrease the risk of developing liver damage Aluminum and magnesium hydroxide antacids should not be taken within two hours of taking rosuvastatin Coadministration of rosuvastatin with eluxadoline may increase the risk of rhabdomyolysis and myopathy Grapefruit juice negatively interacts with several specific drugs in the statin class, but it has little or no effect on rosuvastatin.

Structure Rosuvastatin has structural similarities with most other statins, e.g., atorvastatin, cerivastatin and pitavastatin, but unlike other statins, rosuvastatin contains sulfur (in sulfonyl functional group). Crestor is a calcium salt of rosuvastatin, i.e., rosuvastatin calcium, in which calcium replaces the hydrogen in the carboxylic acid group on the right of the skeletal formula at the top right of this page.

Mechanism of action

Rosuvastatin is a competitive inhibitor of the enzyme HMG-CoA reductase, having a mechanism of action similar to that of other statins. Putative beneficial effects of rosuvastatin therapy on chronic heart failure may be negated by increases in collagen turnover markers as well as a reduction in plasma coenzyme Q10 levels in patients with chronic heart failure.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Rosuvastatin

Start with the simplest possible case. Write down what Rosuvastatin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Rosuvastatin before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Rosuvastatin ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Rosuvastatin

In research: Rosuvastatin appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Rosuvastatin in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Rosuvastatin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 4-Fluorophenyl compounds, Beta hydroxycarboxylic acids, Carboxylic acids, so understanding it makes those chapters shorter.
In everyday life: Look for Rosuvastatin outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Rosuvastatin in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rosuvastatin means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Rosuvastatin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rosuvastatin in simple terms?

Why does Rosuvastatin matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Rosuvastatin?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Rosuvastatin.