Are there some natural ways to block the pain neurotransmitter Substance P?

Answer 1

Capsicum (cayenne).
Read about that here:
http://www.innvista.com/health/ailments/arthritis/dietsupp.htm
and here:
http://www.farmacopia.net/nutrient_herbs.html
You can try a capsicum cream or take internally. Its great for sore throats and to remove mucous and clear the airways.
For arthritis it might be better applied as a cream and you can now find capsicum creams specifically for pain relief.

Hope this helps.
Best wishes.

Answer 2

opium