Renew 180 By Indiana Botanic Gardens Overview & Drug Interactions

Glycine is an amino acid found naturally in the body and is also available as a dietary supplement. It is considered a non-essential amino acid, meaning that the body can produce it on its own. Glycine supplementation has been studied for its potential to help improve sleep quality as it is purported to help to promote relaxation and reduce muscle tension. Some studies have also suggested that it may help to improve symptoms of sleep disorders such as insomnia. Glycine has also been studied for its potential to help with the management of some types of chronic pain, such as osteoarthritis, and for improving cognitive function.

N-acetyl cysteine (NAC) is derived from the amino acid cysteine. It is used as a prescription medication to treat acetaminophen overdose and to help thin mucus in people with certain respiratory conditions. It is also used as a dietary supplement. NAC has a number of potential health benefits. It is a source of the antioxidant enzyme glutathione, which is important for protecting cells from oxidative stress and supporting immune function. It also may have anti-inflammatory effects and studies show it may support healthy brain function. It is generally considered safe to take NAC supplements in recommended doses.

L-glutamine is the most abundant free amino acid in the body, produced primarily in skeletal muscle and then released into circulation. It serves vital roles in various tissues, including the immune system, gastrointestinal tract, kidneys, and liver, where it supports essential functions such as maintaining intestinal integrity, immune response, and amino acid balance. Although traditionally classified as a non-essential amino acid, during periods of severe stress, glutamine becomes conditionally essential due to the body's increased demand. It acts as a critical nitrogen and carbon transporter between organs, and while the intestinal mucosa can synthesize glutamine, this production is insufficient during times of significant physiological stress. Dietary supplements generally contain L-glutamine as it is the biologically active form of the amino acid.

Theanine, often referred to as L-theanine as that is the predominant isomer of theanine, is an amino acid commonly found in tea leaves, particularly in green tea. It is purported to increase levels of GABA, serotonin, and dopamine in the brain, which can help to reduce stress and anxiety. L-theanine may also promote a sense of calm and improve overall well-being. Some studies have also suggested that it may improve cognitive function, although more research is needed. Most reported drug interactions with theanine are due to its sedative effects.

L-tyrosine is a non-essential amino acid produced within the body through the conversion of the essential amino acid, phenylalanine. It is often used as a dietary supplement to support cognitive function, enhance focus, and mitigate stress by serving as a precursor for neurotransmitters like dopamine and norepinephrine.

Dehydroepiandrosterone (DHEA) is a natural (i.e., endogenous) hormone produced by the adrenal gland and is among the most abundant steroid hormones in the human body. It is a precursor to the hormones testosterone and estrogen, and it is thought to have various effects on the body. DHEA levels naturally decline with age. It is a popular over the counter supplement that is purported to have a variety of health benefits, including increasing muscle mass, improving cognitive function, improving mood and reducing the risk of heart disease and diabetes. The scientific evidence supporting the use of DHEA for these purposes is limited and mixed. Additionally, it could potentially interact with several different medications so if you are considering taking DHEA supplements, it is important to speak with a healthcare professional. DHEA should not be confused with other supplements containing the letters 'DHEA'. 7-alpha-hydroxy-DHEA, 7-beta-hydroxy-DHEA, and 7-keto-DHEA, all contain DHEA as the parent compound with additional structures attached.

5-HTP, or 5-hydroxytryptophan, is a naturally-occurring amino acid and a precursor to the neurotransmitter serotonin. It is used as a dietary supplement to improve mood and help with anxiety, sleep disorders, and other conditions. It is also sometimes used in combination with other medications to treat migraines and fibromyalgia. The 5-HTP found in supplements is most often obtained from the seeds of the tropical shrub Griffonia simplicifolia