storage

Hi, how long can cds be stored unopened before it loses its potency?

There's not a set time. You need to store it under 51 degrees to keep the CD from off-gassing. I've had some a month or two which did not appreciably off-gas, but when I have it that length of time, I tend to test again before starting a new series of doses. Then I compensate in amount taken if I find it has weakened.