Drug interactions between E Pherol and YSP Aspirin
| Results for the following 2 drugs: |
|---|
| E Pherol (vitamin e) |
| YSP Aspirin (aspirin) |
Interactions between your selected drugs
aspirin ↔ vitamin e
Applies to:YSP Aspirin (aspirin) and E Pherol (vitamin e)
MONITOR: Limited data suggest that vitamin E may potentiate the effects of anticoagulants and platelet inhibitors. Vitamin E is thought to inhibit the oxidation of reduced vitamin K and interfere with the functions of vitamin K-dependent clotting factors. In one study, administration of vitamin E 42 units/day for one month increased the hypoprothrombinemic effect of a single dose of dicumarol in 3 healthy volunteers, as demonstrated by a decrease in prothrombin activity from 52% to 33% thirty-six hours postdose. The interaction was also suspected in a patient who developed ecchymoses and haematuria following two months of vitamin E supplementation at a dosage of 800 to 1200 units/day while taking warfarin. In contrast, two studies found no significant effect of vitamin E on the hypoprothrombinemic effect of chronic warfarin therapy when administered at relatively high dosages (800 or 1200 units/day) to 21 subjects for one month or at low dosages (100 or 400 units/day) to 12 subjects for four weeks. With respect to antiplatelet activities, data from in vitro and ex vivo human studies suggest that vitamin E can inhibit collagen-induced platelet activation and protein kinase C-dependent platelet aggregation. However, a clinically significant interaction with antiplatelet agents has not been reported.
MANAGEMENT: Patients should consult a healthcare provider before taking any nutritional supplements like vitamin E. Close clinical and laboratory observation for hematologic complications may be appropriate when vitamin E supplementation at dosages greater than 400 units/day is initiated in patients stabilized on anticoagulant or antiplatelet therapy. Patients should be advised to promptly report any signs of bleeding to their physician, including pain, swelling, headache, dizziness, weakness, prolonged bleeding from cuts, increased menstrual flow, vaginal bleeding, nosebleeds, bleeding of gums from brushing, unusual bleeding or bruising, red or brown urine, or red or black stools.
See also...
Drug Interaction Classification
The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
| Major | Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. |
| Moderate | Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. |
| Minor | Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. |
Do not stop taking any medications without consulting your healthcare provider.
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