== typo, however im not sure quite how to fix it == 

 "The findings also reported that antidepressant drugs reduced suicide risk than increase it." 

 you have the past tense (reduced) conflicting with present tense (increase), meaning both should be present or both should be past.  

 also, "than" could have been a misspelled "then", meaning the sentence should have read "antidepressant drugs reduce(d) suicide risk more, then increase(d) it" 
 or the than was correct, in which case the sentence would read "antidepressant drugs reduce(d) suicide risk more than they increase(d) it" or "antidepressant drugs reduce(d) suicide risk less than they increase(d) it"  

 im not going to follow the cite and find out what the findings also reported, im just pointing this out to the people more involved with the upkeep of this article. not trying to be a grammar nazi, just friendly proof reading.