Common Side Effects: Season 1
2025 · 10 episodes · ★ 7.5
What Season 1 of Common Side Effects
Season 1 of Common Side Effects has 10 episodes and premiered on February 2, 2025. Here's the complete episode guide with air dates, runtimes and ratings.
Season 1 Episodes
1x01 Pilot
Marshall meets his old high school classmate Frances and lets her in on a world-changing secret.
Directing: Camille Bozec · Writing: Joseph Bennett, Steve Hely · Starring: Shalita Grant, Ben Feldman, Shannon Woodward
1x02 Lakeshore Limited
Marshall's forced on the run as the DEA pursues him.
Directing: Sean Buckelew · Writing: Steve Hely · Starring: Alan Resnick, Timothy Simons, Bob Stephenson, Ben Feldman
1x03 Hildy
Marshall visits an old mentor as new pressures mount.
Directing: Vincent Tsui · Writing: Emma Barrie · Starring: Andy Daly, Shalita Grant, Lin Shaye, Bob Stephenson
1x04 Dumpsite
Frances tracks down Marshall in an unlikely location.
Directing: Camille Bozec · Writing: Jean Kyoung Frazier · Starring: Shalita Grant, Lin Shaye, Ben Feldman, Sue Rose
1x05 Star-Tel-Lite
Marshall, Frances, and their crazy neighbors deal with the aftermath of a dangerous incident.
Directing: Sean Buckelew · Writing: Dave King · Starring: Nicolas Cantu, Sydney Tamiia Poitier, Sue Rose, Danny Huston
1x06 In the System
Stuck in jail, Marshall faces new threats.
Directing: Vincent Tsui · Writing: Jon Foor · Starring: Lin Shaye, Jon Foor, Timothy Simons, Sydney Tamiia Poitier
1x07 Blowfish
A chance encounter offers a risky opportunity for escape.
Directing: Camille Bozec · Writing: Karey Dornetto · Starring: Jon Foor, Andy Daly, Shalita Grant, Sydney Tamiia Poitier
1x08 Amelia & Wyatt
Marshall and his new ally make a bold move.
Directing: Sean Buckelew · Writing: Daniel Schofield · Starring: Alan Resnick, Jon Foor, Shalita Grant, Ben Feldman
1x09 Cliff's Edge
Marshall's mushroom project grows out of hand.
Directing: Vincent Tsui · Writing: Sophie Kriegel · Starring: Alan Resnick, Shalita Grant, Timothy Simons, Sydney Tamiia Poitier
1x10 Raid Season Finale
Dangerous forces converge on Marshall's camp.
Directing: Camille Bozec · Writing: Steve Hely · Starring: Bob Stephenson, Ben Feldman, Sue Rose, Shannon Woodward
Season 1 Cast
Dave KingMarshall Cuso (voice)10 episodes
Emily PendergastFrances Applewhite (voice)10 episodes
Mike JudgeRick Kruger (voice)10 episodes
Martha KellyAgent Harrington (voice)10 episodes
Joseph Lee AndersonAgent Copano (voice)10 episodes
Shannon WoodwardLinda Tree (voice)8 episodes
Ben FeldmanBud Budrigger (voice)8 episodes
Shalita GrantOncologist (voice)6 episodes
Christine KoKiki (voice)5 episodes
Alan ResnickZane (voice)3 episodes
Timothy SimonsTest Subject 3 (voice)3 episodes
Nicolas CantuTommy (voice)Episode 1Where to Watch Season 1 of Common Side Effects
Subscription
More info and links
Frequently Asked Questions
How many episodes are in Common Side Effects season 1?
Season 1 of Common Side Effects has 10 episodes.
When did season 1 of Common Side Effects premiere?
It premiered on February 2, 2025.
Where to watch Common Side Effects season 1?
Available by subscription on Movistar Plus+ Ficción Total, HBO Max, and HBO Max Amazon Channel (availability may vary by country).
What is the best episode of Season 1?
According to the TMDB audience score, episode 1x03, "Hildy", has a 7.9.