There's a lot to take in. It's not always about taking something. Sometimes it's about NOT taking something. AAS related high BP is all about high rbc and overall blood volume. No herb or even a med is going to significantly impact that problem.
Here's some things to try in addition to a good diet:
Watch your blood pressure with a cuff often
Take out sodium
Watch caffeine
Drink a lot of water
GIVE BLOOD, often
Lower your stress (seriously)
Sometimes meds just cause some capillary dilation which temporarily lowers BP but does nothing for the 54 HCT sludge your heart is trying to circulate. Thinners often achieve their goals by reducing platelet count which is why it's hard to stop bleeding when taking them.
Discuss all this with your doctor but remember there is no magic cure for AAS associated hypertension. Best wishes and good luck.