Component
Study-specific oral contraceptive formulations
Study-specific oral contraceptive formulations. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
Melatonin AUC and peak concentrations were about four- to fivefold higher in oral-contraceptive users than nonusers.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/melatonin-research/18490497.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ab9a91b566e88a73ccbd20d9152934f6a048348bc18ec0c2535ec5a9142dc0e4", "start_char": 0, "end_char": 927, "text_sha256": "ab9a91b566e88a73ccbd20d9152934f6a048348bc18ec0c2535ec5a9142dc0e4"}
- experimental_model
- Pharmacokinetic comparison by contraceptive use and genotype
- exposure
- 6 mg melatonin; oral contraceptive users versus nonusers
- limitations
- Formulations were not universal across all contraceptives. Exposure comparison is not proof all hormone treatments behave identically; genotype effects were nonsignificant.
- nutrient_topic
- Melatonin research collection; topical membership is not evidence of a direct dietary effect. · Melatonin
- organism
- 29 human participants
- plain_language
- Medication context changes how a dose appears in the bloodstream.
- primary_references
- [melatonin-p18490497] The effect of oral contraceptives on the pharmacokinetics of melatonin in healthy subjects with CYP1A2 g.-163C>A polymorphism. (2008). https://pubmed.ncbi.nlm.nih.gov/18490497/ DOI: 10.1177/0091270008318669
- tissue_or_cell_type
- Melatonin clearance
Melatonin: synthesis, receptors, circadian timing and nutrient interactions (2026-09-17) · lines 721–732
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Pharmacokinetic comparison by contraceptive use and genotype · source_derived_draft · unverified_draft
### melatonin-contraceptive-exposure Melatonin AUC and peak concentrations were about four- to fivefold higher in oral-contraceptive users than nonusers. Condition category: normal nutrient_topic: Melatonin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Medication context changes how a dose appears in the bloodstream. organism: 29 human participants tissue_or_cell_type: Melatonin clearance experimental_model: Pharmacokinetic comparison by contraceptive use and genotype limitations: Formulations were not universal across all contraceptives. Exposure comparison is not proof all hormone treatments behave identically; genotype effects were nonsignificant. exposure: 6 mg melatonin; oral contraceptive users versus nonusers evidence_span: {"source_cache": "artifacts/melatonin-research/18490497.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ab9a91b566e88a73ccbd20d9152934f6a048348bc18ec0c2535ec5a9142dc0e4", "start_char": 0, "end_char": 927, "text_sha256": "ab9a91b566e88a73ccbd20d9152934f6a048348bc18ec0c2535ec5a9142dc0e4"} [melatonin-p18490497] The effect of oral contraceptives on the pharmacokinetics of melatonin in healthy subjects with CYP1A2 g.-163C>A polymorphism. (2008). https://pubmed.ncbi.nlm.nih.gov/18490497/ DOI: 10.1177/0091270008318669
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.