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IPEDs (n=21; 15%).
| 1 | Acetildenafil |
| 2 | Alpha GPC |
| 3 | Aminotadalafil |
| 4 | Aniracetam |
| 5 | Centrophenoxine |
| 6 | Choline Bitartrate |
| 7 | Citicoline |
| 8 | Creatine |
| 9 | Coluracetam |
| 10 | Dehydroepiandrosterone |
| 11 | Fasoracetam |
| 12 | Homosildenafil |
| 13 | Huperzine A |
| 14 | Lovegra |
| 15 | Nefiracetam |
| 16 | Noopept |
| 17 | Oxiracetam |
| 18 | Phenylpiracetam |
| 19 | Piracetam |
| 20 | Pramiracetam |
| 21 | Vardenafil |
