Lipitor, also known as Atorvastatin, is a medication that is used to lower cholesterol levels in the blood [1]. Homeopathy, on the other hand, is a form of alternative medicine that uses highly diluted substances to stimulate the body's natural healing process [2]. There is no evidence to suggest that Lipitor can negate the effects of homeopathy.

However, it is important to note that taking Lipitor with certain herbal supplements may have an impact on its effectiveness. For example, St John's Wort, a herbal supplement commonly used to treat depression, can reduce the effectiveness of Lipitor [3]. It is recommended that patients taking Lipitor should consult with their healthcare provider before taking any herbal supplements to avoid any potential interactions.

In terms of cholesterol-lowering alternatives, the British Heart Foundation suggests that a healthy diet and regular exercise can help to lower cholesterol levels [2]. They also mention that some natural remedies, such as garlic, psyllium, and artichoke extract, may have a modest effect on cholesterol levels, but more research is needed to confirm their effectiveness.

In conclusion, there is no evidence to suggest that Lipitor can negate the effects of homeopathy. However, patients taking Lipitor should be cautious when taking herbal supplements, as some may interact with the medication. A healthy diet and regular exercise are recommended as alternatives to cholesterol-lowering medication, and some natural remedies may have a modest effect on cholesterol levels, but more research is needed to confirm their effectiveness.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/cholesterol-lowering-alternatives
[3] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/