Guests
- Dale Sky Jones (1)
- Daliah Heller (1)
- Damon Barrett (1)
- Dan Callahan (1)
- Dan Pabon (1)
- Dana Larsen (5)
- Daniel Joloy (1)
- Daniel Pryor (1)
- Danielle Good, PhD (1)
- Daryl Atkinson (1)
- David Borden (3)
- David Choquehuanca (1)
- David Choquehuanca Céspedes (1)
- David Duffield (1)
- David Herzberg (1)
- David Nutt (1)
- David Shuster (1)
- Dean Becker (5)
- Dean Becker Reverend Most High (2)
- Dean Preston (1)
- Debbie Goldsberry & Vivian McPeak (1)
- Debby Goldsberry (3)
- Deborah Kafoury (1)
- Deborah Small (4)
- Dee-Dee Stout (1)
- Devin Reaves (1)
- Diane Goldstein (8)
- Dita Bhargava (1)
- DJ Larkin (1)
- Doctor Adeeba Kamarulzaman (1)
- Doctor Alexander Walley, Professor of Medicine at Boston University School of Medicine (1)
- Doctor Carl Hart (1)
- Doctor Carolyn Sufrin (1)
- Doctor Corina Giacomello (1)
- Doctor Ethan Russo (1)
- Doctor Mariam Jashi (1)
- Doctor Matthew Kavanagh (1)
- Doctor Pablo Estrella Porter (1)
- Doctor Richard Andrews (1)
- Doctor Ricky Bluthenthal (1)
- Doctor Sheila Vakharia (1)
- Doctor Tim Piatkowski (2)
- Dominic Holden (1)
- Dominique Schori (1)
- Don Hall (3)
- Don Wirtshafter (1)
- Donald Lee (1)
- Donald MacPherson (1)
- Donald Tashkin (1)
- Donnell Alexander (1)
- Dorothy E. Roberts (1)
- Doug Fine (2)
- Doug Kress (1)
- Doug McVay (20)
- Doug Mcvay & Paul Stanford (1)
- Doug McVay, David Borden & David Borden (1)
- Dr Joao Goulao, Portugal's Drug Czar (1)
- Dr Richard Andrews (1)
- Dr. Aala El-Khani (1)
- Dr. Andrea Mann, Director of Global Relations at the Anglican Church of Canada (1)
- Dr. Angela Me (1)
- Dr. Caroline Copeland (1)
- Dr. Daliah Heller (1)
- Dr. David Herzberg (1)
- Dr. Elena Cama (1)
- Dr. Jordan Sloshower (1)
- Dr. Khalid Tinasti (1)
- Dr. Khalid Tinasti, Executive Director of the Global Commission on Drug Policy (1)
- Dr. Kimá Joy Taylor (2)
- Dr. Kojo Koram (1)
- Dr. Matt Poling (1)
- Dr. Nathan P. Jones (1)
- Dr. Peter Reuter (1)
- Dr. Richard Andrews & Allan Clear (1)
- Dr. Richard R. Andrews (1)
- Dr. Sabrina Molinar (1)
- Dr. Sheila Vakharia (1)
- Dr. Tlaleng Mofokeng, (1)
- Drug Czar, James W. Carroll Jr. (1)
- Duncan McCormick (1)
- Dustin Sulak (1)
- Earl Blumenauer (3)
- Ed Forchien (1)
- Ed Forchion (1)
- Ed Rosenthal (1)
- Eddie Bocanegra (1)
- Eddie D’Arcy (1)
- Elan Hagens (1)
- Elina Steinerte (1)
- Elisabeth Epps (1)
- Elizabeth Dickinson (1)
- Elli Schwarz (1)
- Emily Bazelon (1)
- Emily Christie (1)
- Emily Wang (1)
- Eric Sterling (11)
- Eric Sterling and James Gierach (1)
- Eris Nyx (5)
- Ernest Drucker, PhD (1)
- Estefania Valladolid (1)