Turning nutrition science into
a verifiable daily routine
Dr.Oberstan cites research sources for every claim we can, and spells out timing expectations and contraindications for every way of taking it — your body deserves to be taken seriously.
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The figures above come from controlled testing and internal statistics; refer to the batch test reports and statistics notes for details. They are not a claim of efficacy or a promise of results.
Testing notes, curated public literature and source links are in Science Center · Evidence Library; you can request batch test reports from a health advisor during a consultation.
Measurement basis and how to verify
- ① 2-hour cell transport rate · Controlled testing protocol · refer to batch test reports · measured against samples from the same batch, reported as the mean ± standard deviation of repeated runs. How to verify: batch test report
- ② 24-hour selenium bioavailability · Controlled testing protocol · refer to batch test reports · measured against samples from the same batch, reported as the mean ± standard deviation of repeated runs. How to verify: batch test report
- ③ First selenium-peptide annual repurchase rate · Internal statistics · previous full calendar year · summarized under our internal statistics protocol for the previous full calendar year. How to verify: statistics notes on request
- ④ No pesticide residue detected · Tested per batch by an accredited third-party laboratory · tested batch by batch by an accredited third-party laboratory; the item list is in the report. How to verify: batch test report
You can request the batch test report or statistics notes behind each figure above from a health advisor during a consultation, and check them one by one.
Two product lines, one standard
Naturally Homologous Selenium-Peptide nutrition products and a women's pelvic floor restoration program are compared side by side by composition and format, sharing one evidence and quality standard.
Science Center: every claim traces back to a source
From absorption mechanisms to test data and public literature leads across our four evidence topics, we translate technical language into facts you can understand and verify.
Sources: World Health Organization · NutritionChinese Nutrition SocietyFrontiers in Endocrinology: selenium and thyroid diseases (2023)
How our four evidence directions relate to our claims
Thyroid · selenium and nodules — We believe selenium nutrition is relevant to the day-to-day management of thyroid-related markers, with any change judged by measurable markers and public literature.
Breast · inflammation pathways — We believe there are mechanism-level research leads on selenium and selenoproteins in inflammatory regulation, and this is not a claim of efficacy for related symptoms.
Lung · anti-inflammatory — We believe there are mechanism-level research leads, offered as reference on research progress rather than a clinical conclusion in humans.
Microbiome · gut-thyroid axis — We believe the gut environment is related to nutrient absorption, with no direct correspondence to specific product effects.
Usage guide: expectations written into the product
Nutritional support is not about short-term results; our week-by-week guide to expected changes and markers to watch helps you set realistic expectations and plan your follow-ups.
Weeks 2–4
Subjective feelings such as energy, digestion and skin tone may change first.
Weeks 4–8
Individual differences in focus, cold tolerance and mood stability begin to show.
Weeks 8–12
Recheck the relevant markers and compare them with your baseline records.
Before you start
Leave a 2–4 hour gap from medications such as levothyroxine; people with active autoimmune conditions or who are pregnant or breastfeeding should consult a doctor first.
Real stories: individual experience, not a promise of results
The following are excerpts of follow-up records reported by users. They are individual cases and do not promise any outcome.
Age 50 · 4 months of intermittent use
Thyroglobulin antibody (TgAb)
963 → 272
Age 34 · 1 month of use
Thyroglobulin antibody (TgAb)
223 → 1.65
Frequently asked questions
Direct answers on pacing, taking it with medication, verifying the figures and membership benefits. Fuller detail lives on the linked pages.
How long does it take to tell whether it suits me?
The usage guide gives these observation points: weeks 2-4 for subjective changes in energy, digestion and skin, weeks 4-8 for individual differences in focus, cold tolerance and mood stability, and weeks 8-12 for rechecking markers against your baseline record. Individual differences are large, so no single time point is conclusive.
What should I watch for when taking it with medication?
Keep a 2-4 hour gap from levothyroxine and similar medication; people with active autoimmune disease, or who are pregnant or breastfeeding, should consult a doctor first. Full contraindications and timing notes are in the usage guide.
How can I verify the figures shown on this page?
Each figure states its basis and how to verify it: controlled-test results follow the batch test report, internal statistics can be reviewed on request, and literature leads include DOI / PMID links in the Science Center.
What do the membership tiers include?
Registered members can read the literature library and explainer columns, use the lab-result baseline tool and join the community; buying a product includes 90 days of Growth membership; Annual membership is 299 CNY per year. Tier-by-tier benefits and prices are listed on the Membership page.
Content sources and how we compile them
Every figure and claim on this page states its source and how it was collected, so readers and machines can check each item against the original record.
Literature sources and searching
Evidence library entries come from peer-reviewed journals indexed in PubMed, each listing journal, publication year and DOI or PMID with a link to the original. Every evidence direction carries its own search query.
How test data is collected
Cellular transport rate and 24-hour selenium bioavailability come from controlled tests on same-batch samples, reported as the mean of repeated measurements plus or minus standard deviation. Pesticide residue is non-detect after a qualified third-party laboratory tests 108 items per batch.
Basis for operating statistics
The repurchase rate uses our internal statistical basis over the last full calendar year, aggregated from repeat purchases in that period. The statistical note and batch reports can be reviewed on request.
Case sources and updates
Shared stories are users describing changes in their own lab results, recorded as given in the reports they provided. They are individual experiences, not effect claims. When literature or test reports change, the latest original prevails and corrections can be submitted through Contact us.
Compiled by the Dr.Oberstan content team · Aosen (Hong Kong) Health Limited
This is the brand official site. Content is compiled by our content team from published literature and test reports rather than attributed to a named individual expert. To check a specific item, ask a health advisor for the report and the measurement basis.
Revision record: copy and data methodology last revised on November 5, 2026.
The same date is recorded in llms.txt at the site root and in sitemap.xml as the lastmod for each page, so readers and crawlers can judge freshness by one date. Quantitative figures follow batch tests and reporting cycles; cite the matching test report or methodology note.
Membership and partner cooperation
Buying the product includes membership benefits: records, companionship and professional information, so the 12-week cycle is easier to complete. We also support channel partners with materials and cooperation.
Member and user value
- Records · Test baselines and intake check-ins, so changes have evidence
- Companionship · 12-week reminders and support, so you do not stop halfway
- Expertise · Literature library and plain-language science, putting the information in your hands
About Dr.Oberstan
Dr.Oberstan is a functional nutrition brand of Aosen (Hong Kong) Health Co., Ltd. We focus on precision nutrition with trace elements and bioactive peptides, grounded in science and centered on quality.
We judge category value from the raw material side, develop and customize with overseas research institutes, secure key processes, and translate technical language into facts users can understand and verify.
Learn more
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