Lipitor is a medication used to lower cholesterol levels in the blood, which can help reduce the risk of heart disease and stroke. While there is no evidence to suggest that taking Lipitor would affect the safety of stretching exercises, it is always important to consult with a healthcare provider before starting any new exercise program.

Stretching exercises are generally safe and beneficial for individuals of all ages and fitness levels. A study published in the Journal of Orthopaedic & Sports Physical Therapy found that stretching can help reduce the risk of knee injuries in runners [3]. However, it is important to perform stretching exercises correctly to avoid injury.

Some safe stretching exercises that can be done with Lipitor include:

1. Hamstring stretch: Sit on the floor with your legs straight out in front of you. Reach forward and try to touch your toes, holding the stretch for 10-30 seconds.

2. Quadriceps stretch: Stand with your feet shoulder-width apart. Bend your right knee and bring your heel towards your buttocks. Hold onto your ankle with your right hand and hold the stretch for 10-30 seconds. Repeat on the other side.

3. Shoulder stretch: Stand with your feet shoulder-width apart. Bring your right arm across your chest and hold it with your left hand. Hold the stretch for 10-30 seconds and repeat on the other side.

In conclusion, stretching exercises are generally safe and beneficial for individuals taking Lipitor. However, it is important to consult with a healthcare provider before starting any new exercise program. Some safe stretching exercises include hamstring stretch, quadriceps stretch, and shoulder stretch. Proper technique and form should always be used to avoid injury.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.reuters.com/article/us-knee-fitness/stretching-may-help-ward-off-runners-knee-idUKTRE70G0CG20110117