Vyvanse 70 mg not working anymore. Nov 9, 2025 · Discover why your Vyvanse may not be working anymore. I’ve been on 2 X 60mg Vyvanse per day, morning and afternoon, plus 15mg dexamphetamine as booster for evening. Giving Mydayis a second shot and it has been a night and day difference. 1. They may increase the dose by 10-20 mg weekly, depending on the response to the dose. Ive always had problems with it, as it usually only lasts 3-4 hours for me, even on the highest dose but my doctor said its the longest lasting ADHD medication available, so i feel pretty hopeless at the moment. We investigated and found something interesting… Is it possible for my medication to kind of stop working? Ive been on Vyvanse for 8 months, and on 70mg for the last 2 weeks. It doesn't help that vyvanse interferes with my sleep which results in me being tired more often. It doesn't suddenly make you more attentive in 1 or 2 doses. I started opening a second capsule and putting half - quarter in water at around 8 to see if it helps ? Aug 26, 2025 · The proper Vyvanse dosage starts at 30 mg per day, taken in the morning.
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