My shipment of natural sourced levodopa was a couple days later coming in than I anticipated and I had to fall back into using synthetic carbidopa/levodopa. I drove to a restaurant and place an order and then realized I didn’t have my wallet . I walked out to the car didn’t have keys in my pocket . I Repeatedly walked from one room to the other and forgot why I did that . These things used to happen all the time when I was using synthetic carbidopa levodopa and they all stopped happening when I switched to natural source levodopa just saying Sinemet shouldn’t be on the market old people with PD have enough problems. I don’t want to argue with anyone about it not trying to start trouble this is just my personal experience what it’s worth .