Grape seed extract and pycnogenol lower histimines. I'm headed to 20 yrs on these OPC's...do a search of these for your issues.

After on Pycnogenol for a week or so back in 1995, I threw all otc drugs away. I dealt with allergies/sinus issues all my life prior. I was 57 when I "FOUND" these sort of miracles in my life.

If one is on a pharma blood thinner then can't take OPC's and drug ... one or the other.

You could ask your MD about grape seed ex, but they probably couldn't give an answer...pharmacist may know more. I'm not recommending, just my story. I did not have a brain inury.