When you’re a hardworking touring pop superstar like Taylor Swift, you need all the help you get to keep up with your busy schedule and the job’s energy demands. With the singer-songwriter traveling all the time and performing, not to mention juggling the different news items being written about her, it’s not surprising that her vitamin supplements of choice are those designed to deal with stress and anxiety. Swift admits she has favorites.

In an interview with Refinery29, Swift said she takes L-theanine for stress and magnesium of energy and muscle strength. But before you go popping a pill into your mouth just because the pop star says that’s what she takes, it’s best to consult your physician first to determine if it’s what your body truly needs.

L-theanine is an amino acid that has been observed to have a positive effect on those experiencing physiological and psychological stress. Typically found in green tea leaves, it works by blocking neurotransmitters that stimulate the brain to promote a subdued and relaxed result. L-theanine is also known to help boost the levels of dopamine, GABA and serotonin, all of which have a calming effect.

In addition to being a stress buster, l-theanine has an umami flavor that has been linked to lower one’s risk for obesity. This is why green tea is a popular option for those trying to lose weight. Another appealing benefit of this supplement is enhancing the state of wakeful relaxation without worrying about feeling tired and sleepy the day after.

For magnesium, Taylor Swift said she takes it for muscle health and energy. This nutrient is known to have many benefits, including regulating blood pressure, blood sugar levels, and the nerves. It is usually derived from many types of plant-based foods such as seeds, whole grains, legumes, leafy greens and nuts, so supplementation is often unnecessary. However, if these are not part of your usual diet, then taking supplements can help.

Magnesium deficiency has been observed in people who are diagnosed with depression and anxiety. The nutrient plays an important role in proper brain functioning as it controls the HPA axis, which is the center of the body’s stress response system. Health experts recommend that adult women consume 310 to 320 mg of magnesium per day, while the men should take 400 to 420 mg.

Taylor Swift attends the 2019 InStyle And Warner Bros. Golden Globes After Party. Getty Images/Rich Fury