The product should be used by the expiration or best-by date printed on the bottle, provided it has been stored properly and kept sealed between uses
There are also other delivery routes (intravenous, inhalation), but oral is the most accessible

Affiliation: 1 Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA 2 Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH 44195, USA 3 Center for Microbiome & Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA Email: [email protected] ORCID: Affiliation: 4 Department of Neurology, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA ORCID: Affiliation: 1 Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA 2 Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH 44195, USA 3 Center for Microbiome & Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA 5 Department of Cardiovascular Medicine, Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH 44195, USA Explor Med

Some researchers report barely feeling hungry at all