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The Best Episodes of Common Side Effects Season 1

Every episode of Common Side Effects Season 1 ranked from best to worst. Discover the Best Episodes of Common Side Effects Season 1!

Binge this in 3h 47m•Peaking at 9.0/10

Former high school lab partners Marshall and Frances begin to unravel a conspiracy involving big pharma and the federal government to suppress knowledge of a rare mushroom that may hold the key to curing all

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Episode Rankings

  1. #1 Fan Favorite
    Common Side Effects Season 1 Episode 10 - Raid
    9.0/10(1202 votes)

    S1:E10

    Dangerous forces converge on Marshall's camp.

    Director:Camille Bozec
    Writer:Steve Hely

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  2. Common Side Effects Season 1 Episode 9 - Cliff's Edge
    8.8/10(1089 votes)

    S1:E9

    Marshall's mushroom project grows out of hand.

    Director:Vincent Tsui
    Writer:Sophie Kriegel

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  3. Common Side Effects Season 1 Episode 6 - In the System
    8.4/10(1055 votes)

    S1:E6

    Stuck in jail, Marshall faces new threats.

    Director:Vincent Tsui
    Writer:Jon Foor

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  4. Common Side Effects Season 1 Episode 4 - Dumpsite
    8.3/10(1136 votes)

    S1:E4

    Frances tracks down Marshall in an unlikely location.

    Director:Camille Bozec
    Writer:Jean Kyoung Frazier

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  5. Common Side Effects Season 1 Episode 5 - Star-Tel-Lite
    8.3/10(1090 votes)

    S1:E5

    Marshall, Frances, and their crazy neighbors deal with the aftermath of a dangerous incident.

    Director:Sean Buckelew
    Writer:Dave King

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  6. Common Side Effects Season 1 Episode 8 - Amelia & Wyatt
    8.3/10(990 votes)

    S1:E8

    Marshall and his new ally make a bold move.

    Director:Sean Buckelew
    Writer:Daniel Schofield

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  7. Common Side Effects Season 1 Episode 2 - Lakeshore Limited
    8.2/10(1309 votes)

    S1:E2

    Marshall's forced on the run as the DEA pursues him.

    Director:Sean Buckelew
    Writer:Steve Hely

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  8. Common Side Effects Season 1 Episode 7 - Blowfish
    8.2/10(1002 votes)

    S1:E7

    A chance encounter offers a risky opportunity for escape.

    Director:Camille Bozec
    Writer:Karey Dornetto

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  9. Common Side Effects Season 1 Episode 1 - Pilot
    8.1/10(1544 votes)

    S1:E1

    Marshall meets his old high school classmate Frances and lets her in on a world-changing secret.

    Director:Camille Bozec
    Writers:Joseph Bennett, Steve Hely

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  10. Common Side Effects Season 1 Episode 3 - Hildy
    8.1/10(1198 votes)

    S1:E3

    Marshall visits an old mentor as new pressures mount.

    Director:Vincent Tsui
    Writer:Emma Barrie

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Season 1 Ratings Summary

"Raid" is the best rated episode of "Common Side Effects" season 1. It scored 9/10 based on 1202 votes. Directed by Camille Bozec and written by Steve Hely, it aired on 3/30/2025. This episode is rated 0.2 points higher than the second-best, "Cliff's Edge".