By keeping a strong hold on the four stages of a product life cycle, a business can maximise returns and realise when the time is right to divest itself of the product. By not doing so may cost the business money and lead to a limited life cycle for the product.

51 In the diet of hypercholesterolaemic patients, should milk and other dairy products be restricted?

52 Should a 20-year-old, either male or female, with a blood cholesterol level of 300 mg/dL and with hypercholesterolaemic parents, be treated?

53 Why are lipid-lowering drugs (statins) administered at bed time?

54 What is the best statin now and what is your opinion about Crestor 10 mg (rosuvastatin) and Lescol XL (fluvastatin sodium)?

55 How long do statins take to achieve their maximum benefit?

56 If, after 4 months of taking simvastatin (20 mg daily), a patient with hyperlipidaemia and hypertension has an increased aspartate transferase (AST) of up to 60 U/L, with a normal alanine transferase (ALT), what action should I take?

57 How long should the statins be continued once the lipid profile returns to normal? Can we stop the statins once normal levels are attained and then continue with diet modification?

58 What is the exact mechanism of corneal arcus? What is its clinical significance? What is its relationship to hyperlipidaemia? Is there any effective treatment in medicine or alternative medicine to remove corneal arcus?

59 What is the best drug to be added to a statin in a case of familial hypercholesterolaemia not responding to lifestyle and diet modification plus a statin?

60 Can diabetes mellitus cause Horner's syndrome? If so, how?