SALT LAKE CITY (AP) — Prosecutors say a Utah woman used eye drops to secretly poison her husband, making him ill for months.

Court documents say 33-year-old Chandra V. Read was charged with a misdemeanor after her husband found a black bag full of empty eye-drop bottles with the tops removed.

Authorities say he discovered them while home from work and searching for a source of the mysterious illness that left him with headaches, nausea, blurred vision, diarrhea, and a 40-pound weight loss.

He found that the side effects of ingesting the active ingredient in eye drops, Tetrahydrozoline, matched his symptoms.

Police say they later found 11 empty boxes, 10 empty bottles and 6 unopened boxes of the eye drops in the house.

No attorney or publicly listed phone number was immediately available for Read.