Diagnosed 2012
My regimen:
The positives: no bradykinesia, I cut my food with a knife, no button difficulties, brush my teeth now w/o needing elect brush, more strength. Getting in and out of bed, turning over is easier. No more constipation. Parkinson's progression stopped. Suppressed all motor and non-motor symptoms...
Entering my 7th year post diagnosis and have not fallen, not once, to the surprise of my neuro. Was seeing neuro every 6th month, last visit he set app one year. He said if needed we could do some changes earlier. He said my condition can change in as little time as one week.
New schedule, now I follow this regimen:
3 x day C/L 50-200 ER : 8 am, 2 pm, 8 pm. Because it is ER, I take with or w/o food.
2 x day (8 am 2g, and 2 pm 2g) Vitacost vitamin B1 (as thiamine HCL) 500mg, easy swallow capsules

B1 Thiamine therapy reference / stop progression, suppress motor and non-motor symptoms: 
(Thiamine HCL is oral substitute to injecting B1) 2 x day (morning 2g and at lunch 2g) 
Doctor Costantini strategy that I find helpful "thiamine hcl stops the progression forever...". 
Parky people say the first five years is your honeymoon stage with Parkinson's. After that, progression more rapid.I

I have gone from slow motion to normal motor action since joining the growing number of PwP that have started B1 regimen/protocol. – 
Doctor Costantini - “Why is this? Because there is no medicine or drug that is able to affect all of the organs, whereas all of the organs function thanks to Thiamine. An important detail”, adds doctor Costantini, “the Thiamine therapy brings no collateral damage with time”.

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Parkinson's Relief, Questions and Answers