| Similarity | Rank | |
|---|---|---|
| Melatonin | 0.918 | 55486 |
| serotonin | 0.834 | 18868 |
| 5-HTP | 0.831 | 74816 |
| GABA | 0.828 | 46769 |
| tryptophan | 0.826 | 53808 |
| DHEA | 0.821 | 37944 |
| cortisol | 0.809 | 23029 |
| ghrelin | 0.806 | 84971 |
| prolactin | 0.801 | 57895 |
| norepinephrine | 0.799 | 48622 |
| taurine | 0.793 | 79949 |
| dopamine | 0.793 | 20815 |
| progesterone | 0.791 | 21944 |
| neurotransmitters | 0.789 | 32872 |
| Serotonin | 0.789 | 61679 |
| neurotransmitter | 0.789 | 35288 |
| choline | 0.789 | 57784 |
| hormone | 0.788 | 6251 |
| leptin | 0.787 | 40339 |
| levodopa | 0.785 | 98144 |
| phenylalanine | 0.784 | 81370 |
| inositol | 0.783 | 97802 |
| cholinergic | 0.782 | 88546 |
| monoamine | 0.779 | 84399 |
| antidepressant | 0.779 | 25641 |