Is the peripheral neuropathy a side effect of Carbidopa, or a reaction to the downtime from Sinemet? My friend had been using Mucuna Pruriens, but I recently discovered it only contained 15% L-dopa and would like to get a higher grade, maybe 98% though I wonder if a 40% powder or capsule would work better? If an extract is 98% will we miss out on the effects of other ingredients of Mucuna? If anyone has experience with these questions, I'd love to hear your thoughts! Thank you!