Question:
Can orange flavored Metamucil in capsules be used for IBS on Pesach?
Answer:
I don’t have information regarding the Capsules that you are referring to, however according to the CRC, Metamucil 4-in-1 Fiber Sugar Free Orange (Powder) can contain possible Chametz.
The Star-K however, does recommend a Metamucil 4-in-1- Original Coarse Powder - unflavored with real sugar (no kitniyos), Orange Smooth Powder (Sugar-Free), Premium Blend (Sugar-Free Orange, Berry).
Best wishes