Look into nattokinase.
It’s OTC so no big pharma makes money off of it.
But it’s big in Japan: the Japanese eat lots of natto (fermented soybeans) for breakfast and have fewer cardiovascular issues than expected, say, among smokers.
Researchers discovered the primary ingredient and have shown it can break up clots without side effects.
I read online of someone who took the stuff for a year after suffering a massive Deep Vein Thrombosis in their leg, and the clot completely resolved. Granted, such clots sometimes resolve on their own, so it’s not proof, but any evidentiary value it does have is in favor of it working.
You can look for it on Amazon.
Consult with a doctor as it might interact with some blood thinners, and will exacerbate bleeding/bruising, especially if taken with (say) vitamin E, fish oil, and some other over-the-counters.
I’m doing a balancing act now with aspirin and some of the supplements I take that can thin blood.
The clots are in the micro-clot category. Early on when I realized something was wrong I think I may have been having micro strokes. Things seem pretty normal in the brain department now. Occasional brain fog but nothing like before.