Is this bad to eat while on Accutane? (photos)

This isn't a problem, I'm just curious. I'm a 20-year old guy. The type of Accutane I take is "Myorisan Isotretinoin Capsules 40 mg", once per day and I've been on it for 8 days now including today. I’ve heard that Accutane is pretty much just a heavy dose of vitamin A. Before I took my pill today, I ate a frozen TV dinner from Banquet. I didn't realize it until I finished eating it, but on the Nutrition facts it said "Vitamin A 110%". Is that bad? Also, when will I start seeing side effects?

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