Vitamin E is a known blood thinner as well as vitamin C or D, E being the strongest.
It wouldn't be very reasonable to take all of these at once with curcumin as we can't accuratly assess the risk of hemorraghe.
Can you provide evidence that vitamin C or D are blood thinners. Also I have never seen evidence that taking any of these supplements in conjunction have produced " hemorrhagic " effects in anyone not on blood thinning medications.
This seems overly alarmist without supporting data to back it up.
Millions of people take fish oil, vitamin E, C ,D , MSM with few adverse reactions reported in US government studies of emergency room admissions and poison control centers.
Surgeons advise discontinuing the use of any supplement that's even suspected of thinning blood, but that's not evidence that they do.
Hum, I have probably this written too fast, vitamin D and C are not blood thinners but the contrary of it (coagulants).
People don't have adverse reactions when mixing these, obviously, but this can start becoming dangerous if you're planning on megadosing these, I'm talking of MSM, FIsh oil that are sometimes megadosed.
I have myself taken up to 10g MSM with lots of fish oil and had a slighter incidence of bruises, I was certainly not near from getting a cerebral hemorraghe but caution should still be advised overall in elderly people.
Concerning ginkgo, I have also found reports of ceberal hemorraghe due to use of ginkgo with some vitamins and no other medication :
http://www.ncbi.nlm....les/PMC1490168/The case seemed to be especially reactive to blood thinners, that's why caution should be advised because we don't have the same coagulation.
Surgeons suggest to discontinue 2 weeks before surgery and that is normal.
I'm not being alarmist but just telling that you should be careful if you combine several weak blood thinners at once if they're excedding common dosage, I take personnaly vitamin E, fish oil, ginkgo daily and no problems so far.