Hi,
I don't know about herbal remedies, but you can use homeopathy instead. What you would have to do is take what is known as a nosode, which basically means that you take some H.Pylori in potency. It will not harm you at all and in homeopathy, most things can be potentised.
There are a lot of good homeopathic pharmacies on the internet and if you ask them they can potentise almost anything for you. If you want to do this, I would suggest that you take H.Pylori in a 30c potency once a day for about 12 days or so. If you do want to take the antibiotics, then that is ok. Go ahead and take them and you can then follow this with the homeopathy. Hopefully, by taking the homeopathy following the antibiotics, you will minimise your risk of getting it again.
Hope this helps?
Good luck.
Sarah