What's of a way to thin blood other than aspirin or coumadin (warfarin)?

Injections. Besides the drugs that dr. Kaplan mentioned, there are also injections like heparin, the low molecular weight heparins, such as enoxaparin (lovenox), and fondaparinux (arixtra).
Several others. There are two new anticoagulants on the market for prevention of stroke in the setting of atrial fibrillation, trade-named Pradaxa and xarelto. There are other antiplatelet drugs used in coronary artery disease, plavix, (clopidogrel) effient, and brillinta.

Related Questions

Can you tell me about the new way to thin blood other than aspirin or coumadin (warfarin)?

2 new drugs. The fda has approved 2 new drugs and more are on the way: Pradaxa (dabigatran) and xarelto (rivaroxaban). Key points: they're very expensive, don't require frequent blood samples for dosing, and they have no antidote if serious bleeding occurs. Pradaxa is taken twice a day, xarelto is once daily. If stopped abruptly, there is incr risk of clotting with both. Pradaxa can often cause stomach upset.
2 new drugs. Dr. Werner is absolutely right in his very nice summary. Although expensive, the two drugs he mentioned are still less expensive than the low molecular weight Heparin injections (like lovenox) and they can be taken by mouth. You also don't have to be careful about what you eat when you take them, as you do with coumadin (warfarin)., .
Pros and cons. Pros outweigh cons for most but not all pts 10% pts cannot tolerate the stomach upset of pradaxa. Both increase risk of intestinal bleeding compared with warfarin. Pradaxa increases bleeding overall on those older than 75 c/w warfarin. Both substantially reduce risk of brain bleeding. Pradaxa reduces stroke from atrial fibrillation more than warfarin. Both need dose reduction if kidneys impaired.
Fda approvals. Both new drugs are fda approved only for stroke prevention in atrial fibrillation. However both have evidence that they can prevent and treat blood clots such as deep venous thrombosis or pulmonary embolism. Today however they are not fda approved for those uses.

Do blood thinners like aspirin or warfarin help in slowing down vascular dementia caused by mini strokes that is caught at a very early stage?

Doubtful. Theoretically, there is empirical hope. However, no existing scientific evidence supporting decreased rate of small blood vessel occlusion supplying vital cerebral areas has been performed. Prevailing wisdom suggests multi factorial mechanisms as etiology.
Vascular Dementia. There has been no evidence to suggest that blood thinners, such an anti-platelet agents (e.g. Aspirin, plavix) or anticoagulants such as coumadin, (warfarin) slow down the progression of vascular dementia. Aspirin is good for general cardiovascular health, but there is no medical data to support it's use in preventing or slowing dementia. You could still consider Aspirin for your cv health if recommended.

What can thin blood aside from prescription medicine? My husband has a clotting disorder that drs can't diagnose. They have tested for all of the factors, sickle cell, etc... No diagnosis. He was on Coumadin (25 mgs/day) & his level went from. 9 to 1.

Difficult issue. A dose of 25 mg of Coumadin (warfarin) is way more than what is effective in most people. It is not uncommon to not be able to find the cause of clotting disorders. There are other anti-cogulants on the market, however given the difficulty in managing your husband's clotting disorder, he may require evaluation and management by a hematologist specializing in coagulation disorders.

What are the effects of using too much Coumadin (warfarin) and aspirin?

Risk of bleeding. Aspirin can cause bleeding in the stomach because of stomach irritation. It can also cause bleeding because of its effect on platelet function. {platelets are necessary to make bleeding stop.) Coumadin (warfarin) can cause bleeding because of its effect on the body's ability to stop bleeding by a different means from what platelets do. So too much of both can increase you risk of bleeding a lot.

On Coumadin (warfarin) for paroximal afib/tia in the past. Considering switching to palvix w/aspirin is this advisible? Is there a greater risk of bleeding?

It depends on. Your stoke risk....Bleeding risk are fairly equivalent. ..But given history of TIA this gives you a chads2 score at least 2 so anticoagulantsation would be the recommendation.
Don't switch. If you have had atrial fibrillation and a tia, then you are at risk of stroke. Barring a strong contraindication, you really need to be on an oral anticoagulant--either warfarin or Eliquis or xarelto or pradaxa. Plavix/aspirin do decrease your risk of stroke a little but not nearly as much as an anticoagulant. Talk to your doctor about which anticoagulant is best.