Patient w/ history of haemorrhagic CVA, risk of bleeding (e.g. GI ulcer), underlying haemostasis disorder, severe haemorrhage; to undergo major surgery including dental surgery. Mild to moderate renal impairment. Avoid abrupt withdrawal.
This drug may cause hyperkinesia, somnolence and nervousness, if affected, do not drive or operate machinery.
Drug Interactions
May cause confusion, irritability and sleep disorder w/ thyroid extract (T3 and T4). Increased pharmacological effect of anticoagulants, antiplatelet (e.g. acetylsalicylic acid).
Action
Description: Piracetam is a GABA derivative classified as a nootropic agent. The exact mechanism of action is not yet fully elucidated however, it has neuronal and vascular properties. It exerts neuronal effect by protecting the cerebral cortex from various insults (e.g. hypoxia, intoxications). It also has vascular effects on platelets, RBC, and vessel walls by inhibiting platelet aggregation, improves erythrocyte deformability and reduces blood viscosity. Pharmacokinetics: Absorption: Rapidly and almost completely absorbed from the GI tract. Time to peak plasma concentration: W/in 1.5 hr. Distribution: Crosses the blood brain barrier, placenta and enters breast milk. Volume of distribution: 0.7 L/kg. Excretion: Mainly via urine (approx 90%, as unchanged drug). Plasma elimination half-life: 5 hr.
Chemical Structure
Piracetam Source: National Center for Biotechnology Information. PubChem Database. Piracetam, CID=4843, https://pubchem.ncbi.nlm.nih.gov/compound/Piracetam (accessed on Jan. 22, 2020)
N06BX03 - piracetam ; Belongs to the class of other psychostimulants and nootropics.
References
Anon. Piracetam. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. https://online.lexi.com. Accessed 21/11/2017.Buckingham R (ed). Piracetam. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 21/11/2017.Joint Formulary Committee. Piracetam. British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 21/11/2017.Piracetam. Gold Standard Drug Database in ClinicalKey [online]. Elsevier Inc. https://www.clinicalkey.com/. Accessed 24/11/2017.