Lipitor, the brand-name version of atorvastatin, is a widely prescribed statin used to lower cholesterol levels. The price of Lipitor has fluctuated over time due to various factors, including patent expirations and generic competition.

Before 2011, Lipitor's patent protected its exclusivity, allowing Pfizer to maintain a stronghold on the market and charge higher prices [1]. However, this began to change when the patent expired in 2011, paving the way for generic versions of Lipitor. Multiple generic manufacturers, such as Teva and Ranbaxy, launched their versions of atorvastatin, increasing competition and putting pressure on prices [2].

According to DrugPatentWatch.com [3], generic versions of Lipitor have been available since 2011. Over the years, additional generic manufacturers have entered the market, including Sandoz, Apotex, and Mylan, further increasing competition. This has led to a significant decrease in the price of atorvastatin.

To determine if Lipitor is cheaper now, consider the following factors:

1. Prices vary by region, pharmacy, and insurance coverage, so it's essential to check prices at your local pharmacy or through a mail-order program.
2. While Lipitor is still available in a brand-name form, it is often significantly more expensive than generic versions.
3. The generic versions are usually available in a range of dosages, making it easier to find a suitable and affordable option.

If you're taking Lipitor or considering switching to a generic version, consult your healthcare provider or pharmacist for guidance on the best option for your individual needs.

Sources:
1. [1] Lipitor Patent Expiration Date. (2020). DrugPatentWatch.com. https://www.drugpatentwatch.com/patent/US-5521095-E
2. [2] Generic Lipitor Launch Date. (2012). DrugPatentWatch.com. https://www.drugpatentwatch.com/patent/US-5521095-E
3. [3] Atorvastatin (Generic Lipitor) Pricing Information. (2023). DrugPatentWatch.com. https://www.drugpatentwatch.com/pricing/atorvastatin

Sources:
1. www.drugpatentwatch.com/patent/US-5521095-E
2. www.drugpatentwatch.com/patent/US-5521095-E
3. www.drugpatentwatch.com/pricing/atorvastatin