There's definitely a chance that missing a med dose could lead to a decline or change in mood. We're usually hypersensitive to change.

I remember when my best friend would call me more frantic than usual about day to day stress (things at work, drama with friends) I would say, "hey, did you remember to take your Lexapro today?" and she would always be like "oh ****, I forgot." When she'd take it, suddenly the worries were deflated. And she'd thank me.

I never missed a dose in 10 years but I did accidentally take two doses in the same day once by mistake.