Easy enough to try a HCL/pepsin or digestive enzyme supplement. As far as an anti-depressent goes, you might consider giving St. John's Wort a try. St. John's Wort is considered to be as effective an SSRI without the side effects.
Here, in the US, a prescription for an anti-depressent can sometimes make it difficult to obtain health insurance. Another reason to go with St. John's Wort and avoid a paper trail.