See the DrugPatentWatch profile for clonazepam

Clonazepam, a medication commonly used to treat panic disorders, anxiety disorders, and seizure disorders, typically begins to take effect within one to two hours after ingestion [1]. However, it's important to note that the onset of action can vary depending on several factors, including the individual's metabolism, the dosage, and whether the drug is taken with food or on an empty stomach.

Once clonazepam begins to take effect, it can help reduce feelings of anxiety and prevent seizures for a period of 6 to 12 hours [2]. Clonazepam is a long-acting benzodiazepine, which means that it stays in the body for a longer period of time than shorter-acting benzodiazepines [3].

It's important to follow the dosage instructions provided by a healthcare professional when taking clonazepam, as taking too much of the medication can increase the risk of side effects and potentially lead to dependence or addiction [4].

In summary, clonazepam typically begins to take effect within one to two hours after ingestion and can help reduce feelings of anxiety and prevent seizures for a period of 6 to 12 hours.

Sources:
[1] "Clonazepam: MedlinePlus Drug Information." MedlinePlus, U.S. National Library of Medicine, 11 Jan. 2022, medlineplus.gov/druginfo/meds/a682132.html.
[2] "Clonazepam (Oral Route) Side Effects." Mayo Clinic, Mayo Foundation for Medical Education and Research, 1 Jan. 2022, mayoclinic.org/drugs-supplements/clonazepam-oral-route/side-effects/drg-20063830?p=1.
[3] "Clonazepam: A Benzodiazepine with a Long Half-Life." DrugPatentWatch, 2022, drugpatentwatch.com/clonazepam-a-benzodiazepine-with-a-long-half-life/.
[4] "Clonazepam: Uses, Dosage, Side Effects, Interactions, Warning." RxList, 2022, www.rxlist.com/clonazepam-drug.htm.