Medications & Blood Donation: What You Need to Know
Most medications do not disqualify you from donating blood. However, certain drugs require deferral periods or permanent exclusion to protect donor safety, recipient safety, or product quality.
Key Principles
- Donor Safety: Drugs that increase bleeding risk (anticoagulants), lower seizure threshold, or cause hemodynamic instability may make donation unsafe for you.
- Recipient Safety: Teratogenic drugs (e.g., isotretinoin, finasteride, thalidomide) can harm a pregnant transfusion recipient. Some drugs persist in plasma/platelets.
- Product Quality: Drugs affecting platelet function (NSAIDs, aspirin) require deferral for plateletpheresis (2–7 days) but not whole blood.
Common Medication Deferrals (US FDA / AABB Guidelines)
| Medication / Class | Deferral Period | Reason |
|---|---|---|
| Isotretinoin (Accutane), Acitretin | 1 month after last dose | Teratogenicity |
| Finasteride (Propecia), Dutasteride | 1 month / 6 months | Teratogenicity |
| Thalidomide, Lenalidomide, Pomalidomide | Permanent (or per REMS) | Severe teratogenicity |
| Anticoagulants (Warfarin, DOACs, Heparin) | 7 days after last dose (whole blood); varies for platelets | Bleeding risk, product quality |
| Aspirin / NSAIDs | 2 days (platelets only); no deferral whole blood | Platelet dysfunction |
| Antibiotics (acute infection) | Until 24h after last dose + symptom-free | Active infection |
| Immunosuppressives / Biologics | Varies; often no deferral if stable | Assess infection risk |
| Chemotherapy | Permanent (if for malignancy); 1 year after cure for some | Malignancy history |
| Growth Hormone (pituitary-derived, pre-1985) | Permanent | CJD risk |
| Insulin (bovine, UK-sourced pre-1990s) | Permanent | vCJD risk |