Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. According to the sources provided, there is no direct evidence that Lipitor increases the risk of dehydration during hot yoga. However, dehydration can occur as a side effect of Lipitor use, and hot yoga can exacerbate this risk.

Everyday Health [2] lists unusual signs of dehydration, including headache, muscle cramps, and dry mouth, which can occur during hot yoga sessions. This is because hot yoga can cause excessive sweating, leading to dehydration. Additionally, the California Courts [3] note that dehydration is a common problem among elderly individuals who take statins, such as Lipitor, due to decreased kidney function and decreased thirst sensation.

Therefore, it is important for individuals taking Lipitor to be aware of the potential risk of dehydration during hot yoga and to take precautions to prevent it. This may include drinking plenty of water before, during, and after hot yoga sessions, taking frequent breaks, and avoiding hot yoga altogether if dehydration is a concern.

Sources:
[1] DrugPatentWatch. Lipitor. https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Everyday Health. Unusual Signs of Dehydration. https://www.everydayhealth.com/news/unusual-signs-of-dehydration/
[3] California Courts. Elder Abuse Prevention. https://www.courts.ca.gov/documents/ElderAbusePDoc.pdf