I tried the Mucinex this cycle and it definitely helped thin my cm. I also drank grapefruit juice & between the two I had increased cm & it was very thin & watery. I started taking the Mucinex the day after my last period day. I took 1 in the am & 1 in the pm. So started on day 6 & by day 8 I could see a big difference in cm compared to previous cycles!Never tried with pineapple or brazil nuts, but I'd imagine they'd need some time to build up whatever properties needed in your system before it'd be effective. Even with Mucinex (which I'd recommend, it helped me produce more ewcm), you're supposed to start a little before. I started when I noticed a change in my cm from sticky to creamy or watery. then I took it every six hours, just make sure it is guaifenesin ONLY! if it contains a decongestant at all, it will have the opposite effect and dry you out.
I was going to try the pineapple deal but never got to store to buy one. What I've read online & on these forums is that you cut it into 5 sections (including the core) & eat 1 section a day following o.