Unless you are against pharmaceuticals Tagamet or it's generic counterpart is one of the best anti-virals around. I don't know how it does with Lyme disease though. I used tagamet for years.
I suggest you take vitamins A-B-C-D-E-K. These are the basics of immune system support. A as retinyle palmitate 15,000 IU daily, one B complex 100, use Solgars Ester C as it is the only one I found that didn't upset my stomach, D3 in olive oil at 15000 IUs a day, E at 400-800 IU, and a K2 complex. You could also try using Colloidal Silver . Meso Silver or sovereign Silver are recommended.
People argue with me but Lyme is not curable at this time. You'll get a few weeks of Doxycycline to suppress it but it will ramp back up if you don't boost your immune system.
The pain from the duodeum ulcer was excruciating. I found out years later that the H.Pylori was brought in by Ascaria parasites. You'll never get a DX to tell you that but that is a truth I gained with age.