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The Best Episodes of Common Side Effects

Every episode of Common Side Effects ranked from best to worst. Let's dive into the Best Episodes of Common Side Effects!

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
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    Common Side Effects Season 1 Episode 10 - Raid
    9.0/10(1205 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(1091 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(1057 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(1141 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(1095 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(993 votes)

    S1:E8

    Marshall and his new ally make a bold move.

    Director:Sean Buckelew
    Writer:Daniel Schofield

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    The 20 WORST Episodes of Common Side Effects

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  7. Common Side Effects Season 1 Episode 2 - Lakeshore Limited
    8.2/10(1313 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(1005 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(1547 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(1204 votes)

    S1:E3

    Marshall visits an old mentor as new pressures mount.

    Director:Vincent Tsui
    Writer:Emma Barrie

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Best Episodes Summary

"Raid" is the best rated episode of "Common Side Effects". It scored 9/10 based on 1205 votes. Directed by Camille Bozec and written by Steve Hely, it aired on 3/30/2025. This episode scored 0.2 points higher than the second highest rated, "Cliff's Edge".