| Sweat | 3:47 | |
| Hush | 2:48 | |
| Part Of Me | 3:17 | |
| Cold And Ugly (Live) | 4:10 | |
| Jerk Off (Live) | 4:22 | |
| Opiate | 5:22 | |
| The Gaping Lotus Experience | 2:16 |
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Opiate (CD, EP) | Zoo Entertainment | 72445-11027-2 | US | 1992 | |
| Opiate (CD, EP) | Zoo Entertainment | 72445110272 | Europe | 1992 | |
| Opiate (Cass, EP) | Zoo Entertainment | 72445-11027-4 | US | 1992 | |
| Opiate (Cass, EP) | Zoo Entertainment | 72445-11027-4 | Germany | 1992 | |
| Opiate (Cass, EP) | Zoo Entertainment | 72445-11027-4 | Canada | 1992 | |
| Opiate (12", EP) | Zoo Entertainment | 72445-11027-1 | US | 1996 | |
| Opiate (CD, EP, RE) | Zoo Entertainment | 61422-31027-2 | Canada | 1996 | |
| Opiate (CD, EP, RE) | Volcano (2) | 0550022 | Europe | 1998 | |
| Opiate (CD, EP, RE) | Virgin France S.A., Volcano (2) | 7243 8 46689 2 1 | Europe | 1998 | |
| Opiate (CD, EP, RE) | Music For Nations | CDMFNM 245 | Europe | 1998 | |
| Opiate (CD, EP, RE) | Volcano (2) | 61422-33009-2 | Canada | 1999 | |
| Opiate (CD, EP, RE) | Volcano (2), Tool Dissectional | 82876 53646 2 | Europe | 2006 | |
| Opiate (CD, EP, RE) | Volcano (2), Tool Dissectional | BVCQ-27049 | Japan | 2006 | |
| Opiate (12", EP, RE) | Volcano (2) | 61422-31027-1 | US | ||
| Opiate (12", EP, RE, MP) | Volcano (2) | 61422-31027-1 | US | ||
| Opiate (CD, EP) | Zoo Entertainment (3) | none | Germany | ||
| Opiate (CD, EP, RE) | Volcano (2) | 61422-31027-2 | US | ||
| Opiate (CD, EP, RE) | Volcano (2), Tool Dissectional | 61422-33009-2 | Canada | ||
| Opiate (CD, EP, RE) | Volcano (2), Tool Dissectional | 0520012 | Australia & New Zealand | ||
| Opiate (CD, EP, RE) | Volcano (2), Tool Dissectional | 61422-31027-2 | US | ||
| Opiate (CD, EP, RE) | Zoo Entertainment | 61422-33009-2 | Canada |