Third-party testing is an unbiased quality check by an authorized independent testing laboratory. Vitalah’s products are independently tested for potency and purity, including comprehensive tests such as heavy metal testing. We require these vigorous tests to ensure our high-quality standards are met. Oxylent has been shown to be exceptionally pure, containing no detectable toxins. Oxylent has also been proven to maintain the potency listed on the label. Vitalah recommends you consume Oxylent shortly after it dissolves in the water.