FOR those taking CR or RYTARY, always a good idea to try to get your MD to write you a RX for regular C/L with 1 refill to have for just this situation. get it filled ASAP, pay for it privately if you have to, cost to the pharmacy is incredibly cheap for C/L so don't pay over $20, at $15 they are making a good profit
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Carbidopa / Levodopa Prices and Carbidopa / Levodopa Coupons - GoodRx

nothing worse than running out of CR or CL. As good a relationship i have with my independent pharmacy, i supported their computer system for 15 years before retiring, they are super busy and they got side tracked from trying to find MYLAN regular C/L. the generic they could get i didn't like, made me spacey, so I did a quick experiment to see if chewing 1/2 of a CR worked as quickly as a regular C/L and it did kick in almost the same time. whether this would work for days without some unexpected buildup of CR at times i don't know.