Second Time on Accutane What Are Chances of Relapse with This Course and Can I Take my Valcyclovir with It?

I am a 32 year old female who has already been on accutane once. I started getting acne and rosacea at age 30 . I was perscribed 5 month course 40mg/day accutane. It worked beautifully for about 9 months when i noticed a little acne coming back but now at 18 months its just as bad as it was before.I take minocycline daily and use retina and differin. my derm now wants me to go back on accutane at 40mg/day but I am courious if this will result in complete remission or will the acne come back?

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