if you want to try less carbidopa as an experiment you can try a 25/250 carbidopa/levodopa pill, i used to get it when i paid for my meds, it was about the same price as the 25/100 and wasn't that hard to split into qtrs. or try the 25/100CR or 50/200CR which have lower bioavailability. keep in mind that likely less than 5% of l-dopa gets into the brain, less than that gets to where it's needed in the brain and cabidopa does not pass the BBB.

as far as the HINZ protocol goes, seems most posters start off saying it's better than C/L then eventually stop it. and very few users describe the cost and difficulty taking grams of mucana plus the inherent conflict of interest having to buy branded OTC supplements from the same person who prescribes it, which is why we have pharmacies. just my opinion.

Before carbidopa was invented PD's had to take grams of l-dopa and had terrible nausea and it wasn't until carbidopa was added did l-dopa become the "gold" standard.