Short version
I have experienced anhedonia and apathy since taking Zoloft—symptoms that have persisted for nearly two years. Memantine helped significantly with the anhedonia and apathy, but it caused such strange sensations that I stopped taking it. Pimavanserin also alleviates anhedonia, but I discontinued it due to QT interval prolongation and its interaction with atomoxetine. Methylene blue combined with vitamin C has consistently helped with my anhedonia over the past year; I intend to continue this regimen, provided no negative side effects emerge.
Full version
My history and symptoms (this may help you determine whether our PSSD archetypes are similar, which could indicate whether these approaches might be effective for you)
December 2024: I began taking Zoloft, and symptoms appeared almost immediately: emotional numbness, anhedonia, executive dysfunction, and a near-total loss of libido. I stopped Zoloft in June 2024; while the emotional numbness and low libido resolved, the anhedonia and executive dysfunction persisted.
Following the use of Parnate in February 2026, I developed genital numbness (which resolved after three months), as well as low libido and premature ejaculation, both of which remain to this day.
Anhedonia: I derive no pleasure from anything requiring intellectual effort—whether it’s anime, video games, or even TikTok. However, I am still able to find pleasure in physical sensations, such as eating or taking a hot shower. There is no "blocking" of substance effects; caffeine, gabapentin, L-dopa, and 9-Me-BC all help—or have helped in the past (tolerance is always a factor).
Now, onto the experiments.
Memantine
In this post (https://www.reddit.com/r/DrWillPowers/comments/1fyc1mg/list_of_treatments_for_post_finasteride_syndrome/), Dr. Will Powers mentions memantine, describing it as an "NMDA receptor antagonist, upregulates dopamine receptor expression" . I decided to give it a try.
By the fifth day of taking 10 mg daily, I noticed a significant improvement in my anhedonia and executive functions. I was able to clean my apartment for two hours and engage in moderately demanding intellectual work for three hours. My anhedonia eased considerably, making it easy to find ways to spark my own interest.
By the sixth day, however, the dissociative effects became too unpleasant and stressful—it’s quite unsettling to have your brain feel that strange. That was my final day on memantine; I couldn't continue. On the seventh day, the positive effects persisted, though it felt as if my emotional peaks were capped—I never felt better than a 6 out of 10, which is still an excellent result considering I usually hover around a 2 out of 10. By the eighth day, both the positive and negative effects had faded, and I returned to my baseline state of anhedonia and apathy.
Pimavanserin
A couple of months ago, a post—which has since been deleted—described a full recovery from Zoloft-induced anhedonia through the use of pimavanserin. It is hypothesized that the improvements are linked to the inhibition of 5HT2C. I decided to give it a try. During the first few days, I took one capsule (34 mg) at a time, and it worked remarkably well. It brought back a zest for life—even inducing a sense of euphoria—and I found great pleasure in everyday entertainment and social interaction. By the third or fourth day, however, the effect began to wane.
In the second week, I increased the dose to two capsules. This provided some benefit—boosting my state from a 2/10 to a 3/10—which is still a decent result. As a final experiment, I tried taking three capsules of pimavanserin. This worked even better, bringing my mood to a 5/10—much like a typical, ordinary day for a healthy person—but it also triggered anxiety, reminiscent of the feeling one gets from overdoing it with energy drinks.
I ultimately had to stop taking it because both pimavanserin and atomoxetine increase my heart rate, intensify my heartbeats, and prolong the QT interval. It was quite frightening, and I became genuinely concerned about my heart health. Atomoxetine is currently my primary hope for restoring executive function, and it must be taken strictly every day to be effective; pimavanserin is simply a lower priority.
Had it not been for the issues with my heart or my use of atomoxetine, I would have continued taking two capsules of pimavanserin daily, as it yielded fairly good results. It doesn’t work for everyone, but it can be helpful for some.
Methylene blue + Vitamin C
I have been taking this combination in cycles for nearly a year now, and it provides consistent benefits. I take 10–30 mg of methylene blue daily, Monday through Friday, take a break on the weekends, and then repeat the cycle. It works by generally improving my mood. Yes, a sense of apathy and a cognitive block—the feeling of "I don't want to do anything, nothing brings me joy"—may persist; however, if you do manage to get something done, it can actually be rewarding. Tasks that can be tackled on the fly—like playing in Clash Royale, watching a stream or some TikToks, listening to a lecture, or chatting with someone—tend to work quite well. Besides, simply being in a good mood is valuable in its own right.
Every medication comes with contraindications and potential adverse interactions with other substances, so please study the information thoroughly before taking anything. My goal here was merely to point you in a direction for further research by sharing my own personal experience.