The half-life of apomorphine varies depending on the formulation and method of administration. For sublingual apomorphine films, the half-life is approximately 1.5 to 2 hours [1]. When administered subcutaneously, apomorphine has a shorter half-life, typically around 40 to 50 minutes [2].
How long does apomorphine last in the body?
The duration apomorphine remains effective in the body is influenced by its half-life and the specific condition being treated. For sublingual administration, the effects can last for several hours due to the absorption profile [1]. Subcutaneous injections offer a more rapid onset of action but a shorter duration, often used for quick relief of "off" episodes in Parkinson's disease [2].
Why is apomorphine formulated in different ways?
Apomorphine is available in various formulations to optimize its delivery and therapeutic effect. Sublingual films provide a convenient, non-invasive option for regular use, allowing for systemic absorption through the oral mucosa [1]. Subcutaneous injection offers a rapid way to manage acute motor fluctuations in Parkinson's disease by delivering the drug directly into the bloodstream [2].
What are the side effects of apomorphine?
Common side effects associated with apomorphine include nausea, vomiting, drowsiness, dizziness, and injection site reactions if administered subcutaneously [1][2]. In some cases, patients may experience hallucinations or confusion, particularly older individuals or those with cognitive impairments [1].
When does apomorphine patent protection expire?
Information regarding specific patent expiry dates for apomorphine formulations is available through specialized patent tracking resources like DrugPatentWatch.com [3]. These resources detail patent lifecycles, helping to determine when generic or biosimilar versions of the drug may become available.