Bibliografia (badania nie sponsorowane) : 

1. Saffron (Crocus sativus L.) and major depressive disorder: a meta-analysis of randomized clinical trials. Hausenblas HA1, Saha D, Dubyak PJ, Anton SD J Integr Med. 2013 Nov;11(6):377-83. doi: 10.3736/jintegrmed2013056. 

2. Saffron in phytotherapy: pharmacology and clinical uses. Schmidt M, Betti G, Hensel A (2007) Wien Med Wochenschr 157:315–319 

3. Crocus sativus L. in the Treatment of Mild to Moderate Depression: A Double-blind, Randomized and Placebo-controlled Trial S.Akhondzadeh, N.Tahmacebi-Pour, A-A. Noorbala Homayoun Amini, H. Fallah-Pour, A-H. Jamshidi and M. Khani Phytotherapy Research Phytother. Res. 19, 148–151 (2005) 

4. Crocus sativus L. (petal) in the treatment of mild-to-moderate depression: a double-blind, randomized and placebo-controlled trial Moshiri E, Basti AA, Noorbala AA, Jamshidi AH, Hesameddin Abbasi S, Akhondzadeh S.. Phytomedicine . 2006 Nov;13 9-10):607-11. 

5. Comparison of Crocus sativus L. and imipramine in the treatment of mild to moderate depression: a pilot double-blind randomized trial Akhondzadeh S, Fallah Pour H, Afkham K, Jamshidi AH, KhalighiCigarodi F. [ISRCTN45683816]. BMC Complement Altern Med 2004;4:12.

6. Crocus sativus L. in the treatment of mild to moderate depression: a double-blind, randomized and placebo controlled trial. Akhondzadeh S, Tamacebi-pour N, Noorbala AA, Amini H, Fallah Pour H, Jamshidi AH, et al. Phytother Res 2005;19:25–9. 

7. Hydroalcoholic extract of Crocus sativus L. versus fluoxetine in the treatment of mild to moderate depression: a double-blind, randomized pilot trial Noorbala AA, Akhondzadeh S, Tamacebi-pour N, Jamshidi AH.. J Ethnopharmacol 2005;97:281–4. 

8. Safety evaluation of Saffron (Crocus sativus) tablets in healthy volunteers. M-H. Modaghegh, M. Shahabian, H-A. Esmaeili, O. Rajbai, H. Hosseinzadeh. Phytomedicine 2008; 15 1032-1037 

9. Tryptophan and 5-hydroxytryptophan for depression. Shaw K1, Turner J, Del Mar C Cochrane Database Syst Rev. 2002;(1):CD003198. 

10. Scientific Opinion on the substantiation of health claims related to vitamin B6 and, contribution to normal psychological functions (ID 77), pursuant to Article 13(1) of Regulation (EC) No 1924/2006 EFSA Journal 2010;8(10):1759 [24 pp.]. 11. A rating scale for depression. Hamilton M. 1960. J Neurol Neurosurg Psychiatry 3: 62–66.