I appreciate your concern n love towards ur Grandpa. Sadly Parkinson's is a progressive disease. The occurence of severe symptoms can be prolonged but not stopped or reverted. Considering the severity of his illness n age, you may start homoeopathy medicines along with the ongoing allopathic medicines. Homoeopathy medicines can help the brain circulation n brain cells, thereby prolonging the progress of disease further. Homoeopathic medicines are safe and without side effects considering his elderly age.
Next Steps
Visit a local Homoeopath
Health Tips
Educate the family and carerakers about tthe illness and ways to aid the patient.