Homework / test Arabic to English Medical Medical (general) Informed consent form for participation of clinical trial (autistic child)

Is this a typo? This is exactly how it appears in the document,

(دواء غُقْل (اختباري غير فعال

I couldn't find غُقْل, but my guess is that they are talking about placebo, right?
What SHOULD be the correct word?

Thanks.