“…However, a Cochrane Review of 26 randomised controlled trials comparing the efficacy of various antidepressants, antipsychotics and natural products in treatment of somatoform disorders, concluded that the evidence is of low quality in studies suggesting efficacy of amitriptyline, citalopram, clomipramine, fluoxetine, flupentixol, milnacipran, mirtazapine, paliperidone, paroxetine, reboxetine, sertraline, trazodone, quetiapine, venlafaxine, butterbur root, lemon balm leaf-Ze 185, passionflower herb, St John's wort or valerian root 18. The authors noted that current evidence is limited by small sample sizes, high risk of bias and lack of follow-up assessment 18…”