I couldn't find pseudoephederine, so decided to try a beta 2 agonist before orgasm. Beta 2 agonists are potent mast cell stabilizer. I took 10mg terbutaline oral 1 hour before orgasm. Unfortunately it didn't work and now I'm exhausted like never before with exteme anxiety brainfog and doom like feeling and also palpitations and joint pain.
I think pseudoephederine worked for some not because it works on mast cell but because it affects central nervous system. Terbutaline can't cross blood brain barrier so may be that's why it didn't work for me.