References: 

Drugs Mentioned in This Article

Agomelatine (Valdoxan, Melitor)
Amantadine (Symmetrel)
Amibegron
Aminoglutethimide (Cytadren)
Aripiprazole (Abilify)
Atomoxetine (Strattera)
Bromocriptine (Parlodel)
Bupropion (Wellbutrin, Zyban)
Bupropion SR (Wellbutrin SR)
Buspirone (BuSpar)
Carbamazepine (Carbatrol, Tegretol, others)
Celecoxib (Celebrex)
Citalopram (Celexa)
Dehydroepiandrosterone
Desipramine (Norpramin; Pertofrane)
Dexamethasone (Decadron, others)
Duloxetine (Cymbalta)
Escitalopram (Lexapro)
Fluoxetine (Prozac, Sarafem)
Folic acid (Folacin, Folate, Pteroylglutamic acid, Vitamin B9)
Gabapentin (Neurontin)
Imipramine (Tofranil)
Inositol
Ketamine
Ketoconazole (Nizoral)
Lamotrigine (Lamictal)
Lithium (Eskalith, Lithane, Lithobid)
L-tryptophan
Melatonin (Bevitamel)
Memantine (Namenda)
Metyrapone (Metopirone)
Mifepristone (Mifeprex)
Mirtazapine (Remeron)
Modafinil (Provigil)
Nefazodone (Serzone)
Olanzapine (Zyprexa)
Omega-3-acid ethyl esters (Lovaza)
Paroxetine (Paxil)
Pergolide (Permax)
Pindolol (Visken)
Pramipexole
Quetiapine (Seroquel)
Riluzole
Risperidone (Risperdal)
Ropinorole (Requip)
S-adenosyl-l-methionine (SAMe)
Selegiline (Emsam, Atrapryl, Carbex, others)
Sertraline (Zoloft)
Sipatrigine
Topiramate (Topamax)
Tranylcypromine (Parnate)
Trazodone (Desyrel)
Valproate/valproic acid (Depakote, others)
Venlafaxine (Effexor)
Yohimbine (Procomil)
Ziprasidone (Geodon)

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Evidence-Based References

Barowsky J, Schwartz TL. Part 1: An evidence-based approach to augmentation and combination strategies for treatment-resistant depression. Psychiatry 2008. 2006;3:42-61.
Rush AJ, Trivedi MH, Wisniewski SR, et al. Acute and longer-term outcomes in depressed outpatients requiring one or several treatment steps: a STAR*D report. Am J Psychiatry. 2006;163:1905-1917.