Question: Thank you for much useful information! I made my own olive leaf tincture with fresh olive leaves and vodka and I know it needs to be stored in a dark glass bottle. I would like to know if refrigerating it will prolong its shelf life and is there an "expiration date" on its efficacy. Thank you.
Answer: An olive leaf tincture, made correctly, should last about 5 years in a cool dark place. No need to refrigerate unless the ambient temperature is high. (30 deg C+)