I'm in the U.S., so I couldn't buy the Parasym device directly but I had an acquaintance in Australia buy it and hand it off to a family member who was vacationing in Australia at the time.
I did a three month course of treatment from about December 1 to the end of February and I believe it was effective in significantly helping my tinnitus. By that, I mean:
- There were more, and lengthier, periods when my tinnitus was unnoticeable.
- There were fewer, and shorter, periods when my tinnitus was distractingly at its worse.
- The rest of the time, when the tinnitus was "just there," the tinnitus seemed to be more muted.
Overall, I was very happy with the treatment.
I enjoyed this for about a month or so until my physician started me on EDTA chelation therapy (entirely unrelated to the tinnitus). As soon as I began the oral EDTA therapy, my tinnitus worsened to its pre-Parasym condition. I was crushed. I couldn't swear that it was the chelation therapy that did it but the timing was unmistakable.
I had loaned the Parasym to a friend by this time so I wasn't able to try it again until about a week ago when he returned it. I've resumed treatment and I believe it's helping again. The tinnitus seems to be lessening as I use the Parasym each day. I'm still on the chelation therapy, so it may be a case of the Parasym battling the effects of the chelation to keep the tinnitus at bay until the chelation therapy is finished.
The likely role of the chelation therapy notwithstanding, I'm very happy with what the Parasym did. I think the vagus nerve stimulation approach definitely has merit.
I don't spend a ton of time here on the forum, but if you have questions about my experience with the Parasym, I'll try to answer them. There were periods during the three months of therapy that my tinnitus seemed to be worse and times when it was amazingly improved. It was a bit of a roller coaster. I kept and open mind, though, and tried to stay as consistent as possible with my daily therapy.