LIPID-REGULATING DRUGS AND LOCAL SCLEROSANTS

Cholesterol is a fatty substance known as a lipid and is vital for the normal functioning of the body. It is mainly made by the liver but can also be found in some foods.

Having an excessively high level of lipids in your blood (hyperlipidemia) can have an effect on your health. High cholesterol itself does not cause any symptoms, but it increases your risk of serious health conditions.

Cholesterol is carried in your blood by proteins, and when the two combine they are called lipoproteins. There are harmful and protective lipoproteins known as LDL and HDL, or 'bad' and 'good' cholesterol:

-Low-density lipoprotein (LDL): LDL carries cholesterol from your liver to the cells that need it. If there is too much cholesterol for the cells to use, it can build up in the artery walls, leading to disease of the arteries. For this reason, LDL cholesterol is known as "bad cholesterol".

-High-density lipoprotein (HDL): HDL carries cholesterol away from the cells and back to the liver, where it is either broken down or passed out of the body as a waste product. For this reason, it is referred to as "good cholesterol" and higher levels are better.

LIPID-REGULATING DRUGS

-Statins:

They are more effective than other lipid-regulating drugs at lowering LDL-cholesterol concentration but they are less effective than the fibrates in reducing triglyceride concentration. However, statins reduce cardiovascular disease events and total mortality irrespective of the initial cholesterol concentration.

-Atorvastatin (Lipitor).

-Fluvastatin (Lescol).
-Pravastatin sodium (Lipostat).
-Rosuvastatin (Crestor).
-Simvastatin (Zocor, Inegy).
-Bile acid sequestrants: used in the management of hypercholesterolaemia.
-Colesevelam hydrochloride (Cholestagel).
-Colestyramine (Questran).
-Colestipol hydrochloride (Colestid).
-Ezetimibe: inhibits the intestinal absorption of cholesterol (Ezetrol).

-Fibrates: act mainly by decreasing serum triglycerides, they have variable effects on LDL-cholesterol.

-Bezafibrate (Bezalip).

-Ciprofibrate (Modalim).

-Fenofibrate (Lipantil, Supralip).

-Gemfibrozil (Lopid).

-Nicotinic acid group:

-Acipimox: indicated for hyperlipidaemias of types IIb and IV (Olbetam).

-Nicotinic Acid: adjunt to statin in dyslipidaemia or used alone if statin not tolerated (Niaspan).

-Omega-3- fatty acid compounds:

-Omega-3-Acid Ethyl Esters: indicated for hypertriglyceridaemia (Omacor).

-Omega-3-Marine Triglycerides: adjunt in the reduction of plasma triglycerides in severe hypertriglyceridaemia (Maxepa).

LOCAL SCLEROSANTS

-Ethanolamine oleate: indicated for sclerotherapy of varicose veins.
-Sodium Tetradecyl Sulphate: indicated for sclerotherapy of varicose veins (Fibro-vein).

Source:
-http://www.nlm.nih.gov/medlineplus/cholesterol.html
-BNF 57 March 2009