How does anti-depressants affect intelligence?

That depends on what you mean by "intelligence". Antidepressants cause dysfunction in your brain and body, and that dysfunction can lead to comparative gains or losses in the measurements of activities or behaviors that are considered representative of "intelligence". read more

So, antidepressants do not have an inherent beneficial or detrimental effect on intelligence insofar as we can categorize and measure it, but the general trend is that people do not think as well when taking them. read more

Given that I couldn't find anything about it in any paper - and the one paper I found about antidepressants and IQ was about pregnant women, and no statistical differences in IQ were found between the children of women on antidepressants and the children of women who didn't use any - feel free to assume that there is no such link. read more

Expectant mothers may wonder if taking antidepressants will affect their unborn child. The results of research are mixed. Some studies say exposure to antidepressants can harm children. A 2016 study found exposed children are more likely to be depressed at 15 years old. read more