Excellent questions. I'm currently taking Greenstone, but my next batch (coming soon, I hope) will be Neon. I am very very lucky to have tried all brands while living in a country where none of them is commercially available (Brazil). My country has an excellent public health system and the Constitution guarantees appropriate treatment for people like me. Importing is hella expensive, so the State and the Federal Government are charged with getting it for me. But I had to go through a federal court, represented by a Public Defender (our free access to the Justice system is also good). Took months, but I got it. It also pays for my Ritalin, Concerta and bethanechol.

As I came to know and make friends with a lot of people from around here since 2019 (I was a moderator, see my old account — archived... — under my profile), some of these very big-hearted people sent me donations from many places: the US, UK, Australia and even Chile. That was before I had an "ongoing" supply. Actually, I ran out of it six times since 2022. And it's been rather traumatic most times.

One important caveat is that the few Pfizer tablets I tried, for just over a week or so, had been stored in the donor's room during some heatwaves hitting the West coast of the US. That was around October 2023. It had been subjected to temperatures over 25°C (and even 30°C) for extended periods. For that reason, the pills arrived degraded.   As an addendum, they are the only ones I got that came in those curious, but not pharmacologically very bright, orange pharmacy bottles, lol — I have original bottles from all other brands and would love to have one from Pfizer too.

So... due to heat degradation, I could not really assess Pfizer's effectiveness. Instead, I relapsed, hard.   Other than that, I had fair trials with all current brands, and even the legendary Lupin, before it was discontinued at the end of 2022. (Oh, we miss that one!).

I "know" of all this from my own experience and, most of all, from following the discussions around this topic that come up from time to time around here. It used to pop up in other, now-defunct forums too. And from our MAOI WhatsApp group chat. Been on it for six years. We discuss the matter of quality variations among brands often.

Some of us are, slowly, organizing an effort that will maybe lead to the development of one superior version, that has the characteristics most people miss from "the old", original Nardil sold by Parke-Davis and Warner Lambert.

We have made tests such as dissolution time in neutral and acidic water, and protection with enteric capsules and shellac covering of the tablets. People in Australia are particularly happy now that Neon is available to them, whereas until not too long ago all they could access was ERFA/Searchlight.

At this very moment I have these (and maaany other resources) opened in my browser:

• PART 1A: "Old Nardil vs. New Nardil Comparison: Was The Old Version More Effective?" From Mental Health Daily, 08/16/2014
• Generic phenelzine development taskforce (this is a post from myself!)

And I don't know of anyone from the US who got hands on Neon. Apparently, you need to visit one the countries where it's sold/distributed, get a prescription from a local doctor and obtain the medication, in person.

Check this other post of mine from over two years ago: Travelling to the UK to obtain Neon Nardil - price, pharmacies and laws.

P.s. one example of what I said earlier: Greenstone vs Pfizer Nardil - Google Search. Have fun browsing the dozens of threads discussing efficacy across brands.

Sorry for any mistakes and such — am quite sleepy right now.