Carbidopa levodopa is the premier, go-to drug. Instant release is preferred.

You may need two and 1/2 tablets in a single dose. Three tablets even. Three and one half tablets being the limit of effective treatment. Any number of total daily doses. One hour, three, four hours apart.

I was paralyzed until I moved my dose up to two tablets in a single dose, four hours apart day and night.

Required Reading Book List for Advocates of their own health.

Number One:
“The New Parkinson’s Disease Treatment Book” Second Edition, 2015
Dr. Eric Ahlskog,
Chair of Movement Disorders
Mayo Clinic, thirty-years experience.