Every season of Common Side Effects ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Common Side Effects!

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

Pilot

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

Lakeshore Limited

Marshall visits an old mentor as new pressures mount.

Hildy

Frances tracks down Marshall in an unlikely location.

Dumpsite

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

Star-Tel-Lite

Stuck in jail, Marshall faces new threats.

In the System

A chance encounter offers a risky opportunity for escape.

Blowfish

Marshall and his new ally make a bold move.

Amelia & Wyatt

Marshall's mushroom project grows out of hand.

Cliff's Edge

Dangerous forces converge on Marshall's camp.

Raid

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 the world’s diseases.

The Best Seasons of Common Side Effects

The Best Seasons of Common Side Effects

Season 1