Sleep support. We have a wide range of natural supplements designed to aid sleep and relaxation. Melatonin and GABA based supplements are popular as a natural sleep aid. These nutritional supplements can be helpful for sleep support, sleep disorders, delayed sleep phase and jet lag. Melatonin plays an important role in how we sleep and how well we sleep. The body’s natural melatonin levels are highest during the night when we sleep soundly. The GABA supplement is also a popular sleep support supplement that can also help increase sleep and alleviate the effects. We’ve rounded up the best natural sleep support supplements below. 5-HTP is a fantastic compound that the body produces from the amino acid tryptophan.