Bests & Worsts Reviews from Amazon

Supplements started discoloring about 2-3 months after purchase. Kept at room temps 68-72F with all my other supplements. I've bought other NOW supplements and have never had a problem with them. White capsules started discoloring about 60-90 days after purchase date...long before the expiration date of 12/20/21 Lot# 5053848. Anyone else having this problem? There has been an increasing "rotten egg" smell when opening the bottle that was first undetectable then first purchased. Is anyone else having this problem? I am afraid to continue taking these as the dark spots inside the capsules is worsening. Unfortunately I'm outside the return window. And yes, I have kept the silicon dioxide packet or whatever they use to keep moisture low.