I was recently relistening to Mark Dever's 9 Marks interview with Ed Welch. I highly recommend Ed Welch's materials, having found great benefit in them.
In this interview, Dever was questioning Welch on the use of anti-depressants and other psychotropic drugs. He had some interesting comments.
Welch observed that in previous days when the use of drugs was first coming on the scene it was common for believers to question the propriety of such drugs. These days, by the time believers come to pastors for help, they are already on these drugs. Welch says he does not address the use of drugs, but rather focuses on the issues of heart.
Here is a transcribed quote from around the forty-minute mark (transcribed fairly closely, though if you have listened to Dever's interviews [which I greatly enjoy] you know of his penchant to participate in both sides of the interview). At this point, Dever has just questioned whether drugs can mask the real issues. Welch says,
If there are issues of the heart, the person won’t be able to mask them. Physical treatment will affect physical symptoms. So medication can’t give you hope. It can’t give you more love for God for your neighbor but it may have you feel a little bit different. You might feel perhaps cognitively a bit more clearer if you take medication, at its best.
As Welch says, we have something more important to talk about than the use of drugs because the drugs will not remove the heart issues. At the end of the day, a sinner on drugs is still a sinner, and that sin must be dealt with.