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Glossary Pharmacokinetics

study of how drugs move through the body

Pharmacokinetics (PK) is the study of how a drug moves through the body over time. It involves four main processes: absorption (how the drug enters the bloodstream), distribution (how the drug spreads through the body's tissues), metabolism (how the body breaks down the drug), and excretion (how the drug is eliminated from the body). Understanding PK helps in determining the appropriate dosage and frequency of medication to ensure its effectiveness and safety.

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Research

5 / 1000+ results

Preparation of Finasteride Capsules-Loaded Drug Nanoparticles: Formulation, Optimization, In Vitro, and Pharmacokinetic Evaluation

research Preparation of finasteride capsules-loaded drug nanoparticles: formulation, optimization, in vitro, and pharmacokinetic evaluation

28 citations , February 2016 in “International Journal of Nanomedicine”

This study found that freeze-dried finasteride nanoparticles improved the stability, solubility, and in vitro dissolution of the drug, indicating potential benefits for poorly water-soluble drugs.

research Unlocking Dithranol’s Potential: Advanced Drug Delivery Systems for Improved Pharmacokinetics

2 citations , June 2024 in “International Journal of Drug Delivery Technology”

This review describes advanced drug delivery systems for dithranol aimed at overcoming stability issues and skin irritation seen in conventional formulations, highlighting options like nanoparticles and liposomes for improved psoriasis treatment.

Simultaneous Target-Mediated Drug Disposition-Pharmacodynamic Modeling of Finasteride and Dutasteride: Impact of Target Binding and Turnover on Non-Linear Pharmacokinetics

research Simultaneous Target-Mediated Drug Disposition-Pharmacodynamic (TMDD-PD) Modeling of Finasteride and Dutasteride: Impact of Target Binding and Turnover on Non-linear Pharmacokinetics

December 2025 in “The AAPS Journal”

Finasteride and dutasteride's effects are mainly due to target binding saturation and slow enzyme turnover.

research Evolution of Ritlecitinib Population Pharmacokinetic Models During Clinical Drug Development

6 citations , November 2023 in “Clinical Pharmacokinetics”

This research discusses the parallel clinical development of ritlecitinib, an oral Janus kinase 3/tyrosine kinase inhibitor, for treating conditions such as alopecia areata, vitiligo, ulcerative colitis, Crohn's disease, and rheumatoid arthritis. Results are not reported in the abstract.

A Simple Decision Tree for Identifying Early Oral Drug Candidates With Likely Pharmacokinetic Nonlinearity by Intestinal CYP3A Saturation

research A Simple Decision Tree Suited for Identification of Early Oral Drug Candidates With Likely Pharmacokinetic Nonlinearity by Intestinal CYP3A Saturation

November 2020 in “Journal of Pharmaceutical Sciences”

This study suggests a decision tree using in vitro metabolic clearance to identify early drug candidates likely to experience nonlinear pharmacokinetics due to intestinal CYP3A-related metabolism.

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Community Join

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community Fin/Dut and Metabolism Speeds…

in Finasteride/Dutasteride 8 upvotes 2 years ago

A user speculates that a fast metabolism might affect the effectiveness of dutasteride for hair loss. Another user argues that drug response is unrelated to metabolism speed.

community Are we underestimating systemic absorption with homemade/generic Topical Fin? (HPCH vs. PG/Ethanol formulations)

5 upvotes 7 months ago

Topical finasteride may have higher systemic absorption and lower efficacy when using a Propylene Glycol/Ethanol formulation compared to the hydroxypropyl chitosan (HPCH) formulation. The safety profile of topical finasteride relies heavily on the HPCH formulation, and using standard solutions might lead to different pharmacokinetics.

community Sexual Dysfunction in Those with Androgenetic Alopecia on Dutasteride Versus Finasteride

in Finasteride/Dutasteride 113 upvotes 1 year ago

Dutasteride and finasteride have similar risks of sexual dysfunction for treating androgenetic alopecia. Users experience varying side effects, indicating individual differences in drug reactions.

community Realistically, how much PP405 will cost?

33 upvotes 1 year ago

PP405 is in phase 2 trials for hair loss, with discussions on its cost and effectiveness compared to minoxidil and finasteride. Users are skeptical about its efficacy and timeline, with hopes for market release by 2027.

community The new Veritasium video made me conscious about a possible loss of effectiveness of DHT Inhibitors or Minoxidil

in Research/Science 18 upvotes 4 months ago

Concerns about the effectiveness of DHT inhibitors like finasteride and minoxidil due to potential polymorph issues. Experts suggest these concerns are largely unfounded, especially compared to rare cases like ritonavir.

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Learn

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learn Overview

learn Baricitinib

Baricitinib: How did a drug for arthritis end up helping people regrow hair from alopecia areata? Baricitinib helps regrow hair by targeting the autoimmune response in alopecia areata.

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Clinics

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14
Hair Loss Treatments
Dr Joydeep Roy's Skin Clinic, New S.S.Medicos, (near Cachar high school), Malugram/ Drugs Corner, itkhola near Cachar CollegeSilchar, Assam · IN

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