Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. There is no specific waiting period before taking Lipitor and supplements, but it is important to consult with a healthcare provider before taking any supplements while on Lipitor.

According to the Mayo Clinic, hypothyroidism is a condition where the thyroid gland does not produce enough hormones [2]. While there is no direct link between hypothyroidism and Lipitor, it is important to note that hypothyroidism can cause high cholesterol levels. Therefore, if someone has hypothyroidism and is taking Lipitor, it is important to monitor their cholesterol levels regularly.

Niacin is a type of B vitamin that is sometimes used to lower cholesterol levels [3]. However, it is important to note that taking niacin supplements while on Lipitor can increase the risk of side effects such as muscle pain and liver damage. Therefore, it is important to consult with a healthcare provider before taking niacin supplements while on Lipitor.

In conclusion, there is no specific waiting period before taking Lipitor and supplements. However, it is important to consult with a healthcare provider before taking any supplements while on Lipitor, especially if someone has hypothyroidism or is considering taking niacin supplements.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/hypothyroidism/expert-answers/hypothyroidism/faq-20058536
[3] https://ods.od.nih.gov/factsheets/Niacin-HealthProfessional/