What are the half-lives of these three nootropics?

iabsolvejordan

iabsolvejordan

meghanrochelover911
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I’m wondering what the actual half-lives of cerebrolysin, nsi-189, and phenylpiracetam hydrozide are. I’ve asked Deepseek and ChatGPT, and here’s what they’ve had to say:
- Cerebrolysin: N/A since specific data is limited and not well-documented in publicly available sources;
- NSI-189: Deepseek gives a rough estimate of somewhere around 12-24 hours based on structural analogs, while ChatGPT is able to give a more specific mean elimination half-life ranging from 17.4 to 20.5 hours, sourcing this PMC study, as well as this Daily Medical News article. ChatGPT also mentions that steady-state concentrations are typically achieved after 96-120 hours of dosing, in order for the plasma drug levels to remain relatively constant (implying regular dosing up to that point);
- Phenylpiracetam Hydrazide: Deepseek, again, gives a rough estimate of around 3-5 hours based on structural analogs, while ChatGPT mentions that its parent compound, Phenylpiracetam showed a half-life of 2.5-3 hours based on rodent studies. The product description found on this website might be helpful.

Im curious to see what you guys think. Does anyone have an informative answer which could help clear up my confusions? Can someone who has personal experience and/or possible insider knowledge please let me know?
 

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