Re: dose too high?
150mg is a bit of a leap, isn't it? He should've went to 75mg, then 100mg, you leaped too quick, too fast in dosage. Not your fault, though, as the doctor who prescribed you it, took a shot in the dark thinking it was the best decision. It wasn't. I would first, before giving up, talk to your doctor, convince him to go down to 100mg, then stay, if you manage it, stick with it. If not, go down to 75mg, slowly.
I am not a doctor by any means, but by personal experience, do not up the dose that quick, the side effects are 10x more harsh that way.
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Diagnosis: ADHD (Combined Type) with GAD. Had Post Concussive Syndrome, as well as Occipital Neuralgia and IBS. Recovered from PCS in May 2013. Diagnosed with a kidney disease called Gitelman Syndrome in November 2015.
On natural remedies currently.
L-tryptophan and magnesium glycinate
Also taking: potassium chloride er