How long does statin therapy take to work for high cholesterol?

High cholesterol often causes no symptoms, so you may not feel the medicine working. A statin reduces cholesterol production in the liver, and a blood test is the practical way to assess its effect. The result can be influenced by the dose, missed doses, other medicines, health conditions and inherited cholesterol patterns.

Treatment is often long term because cholesterol can rise again when the medicine is stopped. A result that is not at the intended level does not mean treatment has failed; your clinician may review adherence, dose, interactions or another cause.

Take the prescribed dose regularly and arrange the follow-up test suggested by your clinician. Do not double a missed dose or stop treatment without advice. Mention unexplained muscle pain or weakness, dark urine, yellowing of the skin or eyes, or other new symptoms promptly.

Continue heart-healthy habits such as choosing fibre-rich foods, staying active within your abilities and avoiding tobacco. Learn more in [Statin Therapy](/treatments/medical-management/statin-therapy/).

Seek urgent help for severe weakness, difficulty breathing, facial swelling or signs of a serious allergic reaction. Contact your prescriber promptly for persistent muscle pain, marked weakness or yellow skin or eyes, particularly after starting or changing treatment.

Ask when to repeat your cholesterol test, what result is the target for you, what to do after a missed dose, and which medicines or supplements could interact with the statin.