You can watch the TV series "Common Side Effects" on several streaming platforms:

• Max (subscription required, plans start at $9.99/month)

• Adult Swim, where it airs Sundays at 11:30pm, with episodes available the next day on Max

• Hulu also streams "Common Side Effects"

• Amazon Prime Video offers the series for Prime members

• In Europe, it is available on Max, HBO Max, Channel 4 (UK/Ireland), Warner TV Next, Warner TV Comedy Deutschland, and Adult Swim Europe

Additionally, you can buy or rent episodes on platforms like Microsoft Store, Amazon Video, Apple TV, and Fandango At Home

. Therefore, the best options to watch "Common Side Effects" are Max, Adult Swim, Hulu, and Prime Video, depending on your region and subscription availability.