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UniSA Advances Weekly Parkinson’s Injectable to Animal Trials After Lab Success

Patented levodopa-carbidopa formulation demonstrated sustained release and safety in lab studies ahead of animal testing scheduled within six months

A slow-release Parkinson's injection would mean not taking pills multiple times a day
The formulation can be easily administered through a fine 22-gauge needle, minimising discomfort and eliminating the need for surgical implant. Credit: Neuroscience News
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Overview

  • The biodegradable gel combines FDA-approved PLGA with a pH-sensitive Eudragit L-100 polymer to deliver levodopa and carbidopa steadily over seven days without significant toxicity.
  • Laboratory tests confirmed more than 90% of levodopa and over 81% of carbidopa released in seven days with implant degradation exceeding 80%.
  • Researchers led by Professor Sanjay Garg and Deepa Nakmode have filed an Australian patent for the once-weekly injectable aimed at replacing multiple daily oral doses.
  • The team is preparing ethics submissions and protocols for animal studies, with human clinical trials to follow pending regulatory approvals.
  • Parkinson’s Australia has endorsed the innovation for its potential to ease dosing burdens and improve adherence, especially in elderly patients with swallowing difficulties.