Cholesterol lowering injections
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Overview of Cholesterol Lowering Injections
Cholesterol lowering injections are an important option for patients who cannot reach their cholesterol goals with oral medications like statins, or who are intolerant to them. These injectable therapies include both traditional and newer agents, such as PCSK9 inhibitors, small interfering RNA (siRNA) therapies, and certain traditional Chinese medicine injections.
PCSK9 Inhibitors and siRNA Therapies for LDL Cholesterol Reduction
PCSK9 Inhibitors: Evolocumab, Alirocumab, and Ongericimab
PCSK9 inhibitors, such as evolocumab, alirocumab, and the newer ongericimab, are monoclonal antibodies that target the PCSK9 protein, leading to increased removal of LDL cholesterol from the blood. Clinical studies show that these drugs can reduce LDL cholesterol by 30–70% when added to standard therapy, with a favorable safety profile and mostly mild side effects, such as injection site reactions 28. Ongericimab, in particular, demonstrated a 71–73% reduction in LDL cholesterol over 12 weeks in Chinese patients, with similar safety and tolerability to placebo .
Inclisiran: A Twice-Yearly siRNA Injection
Inclisiran is a first-in-class siRNA therapy that works by blocking the production of PCSK9 in the liver. It is administered as a subcutaneous injection twice a year after two initial doses. Clinical trials in patients with atherosclerotic cardiovascular disease (ASCVD) or familial hypercholesterolemia (HeFH) showed LDL cholesterol reductions of 40–52% compared to placebo, with effects lasting up to 7 years and a good safety profile. The most common side effect is mild, transient injection site reactions 4569+1 MORE. Inclisiran is especially useful for patients who cannot tolerate statins or need additional LDL cholesterol lowering 5910.
Traditional Chinese Medicine Injections: Danhong and Huangqi
Danhong and Huangqi injections, used in traditional Chinese medicine, have also shown cholesterol-lowering effects. Meta-analyses and animal studies indicate that Danhong injection can significantly reduce triglycerides, total cholesterol, and LDL cholesterol, while increasing HDL cholesterol. Huangqi injection also lowers cholesterol, but its effects are less pronounced than Danhong 13. The mechanism may involve improving lipid metabolism and reducing oxidative stress .
Safety and Tolerability of Injectable Lipid-Lowering Drugs
Overall, injectable cholesterol-lowering drugs are well tolerated. The most common side effects are mild and include injection site reactions. Serious adverse events are rare and occur at similar rates as placebo in clinical trials 2456+2 MORE. Long-term safety data for newer agents like inclisiran are still being collected, but results so far are reassuring 510.
Conclusion
Cholesterol lowering injections, including PCSK9 inhibitors, inclisiran, and certain traditional Chinese medicine injections, offer effective and generally safe options for patients who need additional cholesterol reduction beyond oral medications. These therapies can significantly lower LDL cholesterol and may be especially valuable for high-risk patients or those who cannot tolerate statins. Ongoing studies will further clarify their long-term benefits and safety.
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