Is it okay to take metamucil on fodmap diet?

Low FOD-MAP diet: The low fod-map diet identifies foods that may contribute to gassiness and bloating. Perhaps your future reduction of fod-map ingestants can be part of your greater effort toward healthier eating & drinking. Note that Metamucil may ferment in your gut to more gas. Be aware however that gassiness may be symptomatic of a bigger problem--see other HealthTap answers on the subject.