Thought to vs thought to be

Jignesh77

Senior Member
India- hindi
How Gabapentin AN works
This medicine is thought to work by controlling brain chemicals which send signals to nerves to help control seizures or neuropathic pain.
Gabapentin AN Tablets
Would "thought to be working" equally coorrect or more appropriate in the context?
Please explain to me the use of "to be plus ing" here
 
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