Compound library / Heart & circulation / Blood Thinners

Aspirin (Low-Dose)

Antiplatelet at low doses, used for secondary prevention of heart attack/stroke in people with established cardiovascular disease; no longer broadly recommended for primary prevention in healthy adults.

CategoryBlood Thinners
Regulatory standingApproved medicine
Typical routeOral
Half-life~20 minutes (parent drug; antiplatelet effect lasts the life of the platelet, ~7-10 days)
Common dose range81 mg once daily (low-dose/"baby aspirin")
Typical cycle lengthOngoing, long-term

BioHack Track models Aspirin (Low-Dose) at a half-life of 0.3 hours, so every dose you log is decayed against that curve and the app shows estimated active levels — not just what you typed.

Approved medicine

An FDA-approved product containing this compound exists, and its label is linked under Primary sources below. That label is the authority on dosing; the range on this page describes what people commonly track, including off-label use, and does not replace it.

Reconstitution

Oral tablet; no reconstitution needed.

Storage

Store at room temperature, away from moisture.

Cautions

Available over-the-counter, but daily use should still be discussed with a doctor — bleeding risk, especially GI bleeding, increases with age and combination with other blood thinners/NSAIDs.

Track Aspirin (Low-Dose) in BioHack Track. Half-life, dose range and route come pre-filled from this library — log a dose and the app counts your vial down, models what is in your system, and puts it on the same chart as your labs and body composition.

Others in Blood Thinners

What the evidence says

Evidence Check asks 10 questions about every compound. For Aspirin (Low-Dose) it can answer 2 of them, from the papers we hold — graded by how strong the study design is, not by whether the findings are flattering. These are the same verdicts the app gives.

Strongest EvidenceWeight loss

Meta-analyses or systematic reviews exist — the highest grade of evidence there is, whatever they conclude. Read them.

  • Aspirin versus low-molecular-weight heparin for thromboprophylaxis after orthopaedic surgery: a systematic review and meta-analysisMeta-Analysis · Blood Coagul Fibrinolysis · 2024 · PMID 38652521
Strongest EvidenceWound healing

Meta-analyses or systematic reviews exist — the highest grade of evidence there is, whatever they conclude. Read them.

  • Aspirin versus low-molecular-weight heparin for thromboprophylaxis after orthopaedic surgery: a systematic review and meta-analysisMeta-Analysis · Blood Coagul Fibrinolysis · 2024 · PMID 38652521

Look up the research

These open a search of each database for Aspirin (Low-Dose) — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.

Work it out

Selected published studies

11 papers naming Aspirin (Low-Dose) in the title, drawn from PubMed and limited to reviews, meta-analyses and trials. Each was checked against PubMed’s own record for its title, journal and year. This is a starting point, not an evidence review — nothing here is offered as support for the dose range above, and the list is not exhaustive. See the editorial policy.

Where these figures come from

The half-life, route and dose range on this page are compiled from published pharmacokinetic literature, manufacturer and product monographs where one exists, and the ranges commonly reported in clinical and research use. They are kept as a range rather than a single figure because that is what the sources actually support — a half-life varies with route, formulation and the person.

These are not citations, and this page is not a review of the evidence. Where a number matters to you, follow the database links above and read the source. We say so plainly rather than dressing a compiled reference up as one.

Nothing on this page has been reviewed by a named clinician. It is a reference for people already tracking a protocol, not a recommendation to start one.

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