CommunityMind & Motivation

Anhedonia and side effects while dosing tirzepatide or retatrutide

98 replies21 peopleOct 12, 2025☆ Follow
Summary

how users experience and manage anhedonia plus related side effects during ongoing weight-loss treatment with these compounds

Participants report anhedonia emerging at varying doses and durations, sometimes improving after dose reduction or addition of NAC, semax or selank. Weight loss continues while other effects such as elevated heart rate, irritability, cold extremities and loss of motivation persist. Stacks with CJC/Ipa, NAD+, epitalon and similar compounds produce inconsistent reports on energy or focus restoration. Prior ADHD or mood history is noted as a possible influencing factor.

What this discussion establishesWhere people disagree

whether symptoms reliably improve over weeks without further intervention

Still open

optimal long-term dose adjustments and the role of prior mental-health history

Nothing here is advice.

98 replies · 21 people · page 1 of 2
AmberMarble84archiveopening postOct 12, 2025

I was using Tirz for several months with solid weight loss and few issues, and I really liked it. Once I reached the higher doses around 10-11 mg though, everything started feeling flat and pointless, with low mood and zero motivation or enjoyment in anything. I still went to work but spent the rest of the time just sitting around with no energy. I never had this on Sema. I waited it out but eventually had to start lowering the dose and moving over to Reta plus a bit of Cagri, which gave me more energy. Still worried it could happen again on Reta, so wondering if anyone knows supplements that might help with this anhedonia.

ClearKettle23archiveOct 12, 2025

Not sure if this will help at all, but here's what happened to me. I was fine on tirz for about 15 months until sudden bad anxiety hit out of nowhere and left me stuck in bed. Now I'm on a lower tirz dose plus a small amount of sema midweek and the anxiety is gone. It seems like experimenting with different options and amounts is the way, since reactions vary so much. I'm sure there's a fix out there.

AmberMarble84archiveOct 12, 2025
↳ replying to @ClearKettle23

I'm already doing that kind of mixing, just looking for other ideas that might work. Being stuck in bed from anxiety sounds really rough.

ClearSparrow55archiveOct 12, 2025
↳ replying to @AmberMarble84

In my experience time fixed it. I began on a higher Tirz dose than usual and felt off for the first few months, basically just sitting around with no drive. It passed on its own, though any dose increase brought it back briefly before fading again. I eventually reached 15 mg every four or five days and stopped noticing the flat feeling even at that level. Maybe the same will happen for you.

AmberMarble84archiveOct 12, 2025
↳ replying to @ClearSparrow55

Thanks, but I couldn't handle feeling that way even temporarily so I switched to reta hoping it won't cause the same problem. Glad it eventually worked out for you, I might try Tirz again later since I have a big supply stored away.

ClearSparrow55archiveOct 12, 2025
↳ replying to @AmberMarble84

I get it. I was so out of it I didn't even notice how off I was until things started feeling normal again and I wanted to do stuff. Hope reta treats you better than Tirz did.

AmberMarble84archiveOct 12, 2025
↳ replying to @ClearSparrow55

Yeah, at first I didn't connect it to anything, but it kept getting worse so I started checking what side effects were listed.

GreyThistle70archiveOct 12, 2025

This is new to me, I only knew about similar issues with BPC-157. I'm on both Tirz and BPC-157 and for the BPC I also take NAC because it's supposed to help balance serotonin and dopamine.

BrightMeadow15archiveOct 13, 2025
↳ replying to @GreyThistle70

I'm in the same spot with tirz and NAD+. Tried all three GLP-1s briefly and got anhedonia on each one. On sema it hit hard by week three so I stopped. That's why I keep trying the others at low partial doses. Three doses into tirz now with NAD a few times a week and it's mostly okay, though the flat feeling still shows up sometimes. The other morning I was making jokes early, which isn't usual for me at this age and stage. I already had some history with anhedonia turning into depression so that probably raises the risk. Not great at exercising regularly but even twenty minutes of walking helped my usual version of this. Not sure if it fixes the med-induced kind but worth trying. Energy is a bit better but probably not touching the dopamine side. When energy drops I get crankier. Also wondering about NAC.

CopperCompass90archiveOct 13, 2025

I feel better whenever I see a post from that one regular user. Hope everything is going okay.

SteadyQuill55archiveOct 13, 2025
↳ replying to @ClearSparrow55

From your experience I hope the same happens here. I've been ignoring how flat I've felt but I'm starting to admit it might be real. More workouts seem to help and it was already easing after my last dose increase, so maybe if I keep going it will stay gone while I stay healthy.

AmberMarble84archiveOct 13, 2025
↳ replying to @GreyThistle70

NAC as tablets or capsules? How much and how often? Would be nice to pick some up right away.

AmberMarble84archiveOct 13, 2025
↳ replying to @BrightMeadow15

I think the mention was NAC, though I've seen NAD mentioned too for giving energy when feeling flat. Do you do the shots? I can't handle injections. I'm 49, perimenopausal, and have dealt with depression before, so probably more likely to get this side effect. Also read that ADHD can make it worse and I have some ADD traits without meds. Hope the tirz is going better for you now, go slow. Sorry it hit you too. I exercise six days a week and it helps a little with energy but didn't fix the total flatness. Switched to Reta at 5 mg.

GreyThistle70archiveOct 13, 2025
↳ replying to @BrightMeadow15

N-acetylcysteine has been shown in animal studies to reverse anhedonic behavior in depression models by improving neurotransmitter balance and brain areas involved in reward. I stick with the standard 600 mg daily.

QuietLantern39archiveOct 13, 2025

There's often an initial high from the early weight loss, then you lose the coping mechanism of eating plus the biological drive to keep eating. I tried an SSRI then switched to bupropion. You didn't mention how much weight you've lost so far.

CopperFenwick68archiveOct 13, 2025

These meds act on the same reward pathways in the brain that get activated by dopamine from things like drugs, alcohol, or shopping, which is why they're being looked at for addiction treatment. It makes sense you'd feel flat once those usual dopamine sources are no longer hitting the same way, especially food for a lot of us. I went through something similar a few months into Tirz but it passed and I've been fine for over a year now.

AmberMarble84archiveOct 13, 2025
↳ replying to @GreyThistle70

Thanks, I'll give it a try since it's inexpensive and easy to find.

AmberMarble84archiveOct 13, 2025
↳ replying to @QuietLantern39

Not a huge amount, started at 86 kg at 1.69 m and now at 76.6 kg. It felt odd not being able to enjoy the progress, like I wasn't sure if I should feel happy. I was usually around 65 kg before but became insulin resistant after having a kid and then again after covid when the weight came on.

PlainKettle47archiveOct 13, 2025

Had a touch of this on Tirz but it didn't stick around. Switched to Reta mostly for cost and the reports of it being better, but now weight is creeping back, appetite is much higher, and inflammation and back pain are worse. Not sure if what I have is even real since I got it from grey market sources and there's no appetite control even at 10 mg. Waiting on a new batch plus some cagri to see if that changes things, otherwise going back to tirz.

CopperWillow72archiveOct 13, 2025
↳ replying to @AmberMarble84

I had mood changes too and thought it was perimenopause plus stress from an upcoming exam. Couldn't think of what to say when people talked to me and had no emotions at all, even though I'm usually the type who cries at everything. Got on sertraline but now that I'm feeling better and tapering off, the only change was lowering the tirz dose, so maybe that was the real cause.

ClearWillow59archiveOct 13, 2025

The KLOW blend makes me feel good and I'm trying semax for cognitive function. Both keep me going. Exercise and music also lift my energy and mood. The Andrew Huberman video on dopamine has some useful tips.

AmberMarble84archiveOct 14, 2025
↳ replying to @CopperWillow72

Yes the lack of any emotion is terrible. I work with patients who cry and felt nothing, when normally I'm very emotional and can tear up over commercials especially now in perimenopause.

PatientWillow72archiveOct 16, 2025
↳ replying to @AmberMarble84 (opening post)

What's missing is the frequent dopamine hits your brain used to get before the GLP-1s. Dopamine fuels the pleasure center, so when those hits get reduced the flatness and low mood stand out more. Many of us got most of our enjoyment from food, which is part of why the weight was there to begin with.

BrightMeadow15archiveNov 3, 2025
↳ replying to @AmberMarble84

It's been a couple weeks, how are you doing now? NAD+ helps energy but not so much the flat feeling. I've noticed that forcing a laugh at a joke can sometimes bring the feeling back a little, unlike my usual anhedonia where if I wasn't going to laugh it just wasn't there. This version feels different. Still at a low dose, dropped to 1 mg last week. Used the light box yesterday and went to the gym three of the last four days, which usually perks me up. NAC was suggested somewhere. Open to more ideas. Starting to wonder if this just won't work or if I should wait for better weather.

AmberMarble84archiveNov 3, 2025
↳ replying to @BrightMeadow15

Thanks for checking in. I'm actually back to normal because I lowered and stopped the tirz and switched to reta, which doesn't seem to cause the same flatness. I'm taking the NAC capsules every morning someone suggested, though I'm not sure if it's doing anything. Energy is fine with six days of exercise a week. Haven't tried NAD+ yet but want to look into Pinealon, Semax, and Selank since I have some ADD traits and sleep is often poor. Sorry it's still rough for you, maybe those brain peptides could help. I also tend to get a bit low in November when it's dark and cold and use a light therapy lamp. Heading somewhere sunny next week. If it's too much you could try Cagri instead since it works on a different receptor.

AmberMarble84archiveNov 3, 2025

Simple things to check: how much are you eating and are you getting enough protein? Too little food can leave you tired and sluggish.

BrightMeadow15archiveNov 3, 2025

Thanks, the trip sounds good. Seasonal lack of sun is real where I am. The brain peptides might be worth looking into. This round started later than usual which was a surprise. Diagnosed ADHD and magnesium has helped sleep a lot especially with perimenopause approaching, less spinning thoughts at night. Will check out cagri. Protein tracking has slipped, good reminder. Wasn't expecting a reply, just checking in, but any other thoughts are welcome.

AmberMarble84archiveNov 3, 2025

No problem, I wanted to reply. Perimenopausal too, what a pain.

ClearWillow59archiveNov 3, 2025
↳ replying to @PatientWillow72

Thanks for explaining that. I watched an informative video on the same topic by Andrew Huberman on YouTube and recommend it. It covers how dopamine works and ways to improve it.

BrightMeadow15archiveNov 3, 2025

Huberman has several dopamine episodes covering baseline improvement, craving and pursuit, motivation and focus, addiction, and using it for procrastination. Which one were you thinking of?

AmberMarble84archiveNov 3, 2025
↳ replying to @BrightMeadow15

That one is excellent, though there are several good ones. The episode on controlling dopamine for motivation, focus and satisfaction is basically a masterclass. It explains what dopamine does, the circuits involved, peaks versus baseline, depletion, and gives fourteen tools for managing release to help with motivation, focus, addiction, and depression. It covers why stacking dopamine from chemicals and behaviors leads to feeling underwhelmed, how to raise baseline levels sustainably, things that harm or protect dopamine neurons like caffeine, and non-prescription supplements for dopamine along with their pros, cons, and synergy with acetylcholine boosters.

ClearWillow59archiveNov 3, 2025
↳ replying to @BrightMeadow15

I didn't realize there were multiple, I just watched the one on motivation and focus.

BrightMeadow15archiveNov 4, 2025

Two for two, sounds like that's the episode I should listen to.

ClearWillow59archiveNov 4, 2025
↳ replying to @BrightMeadow15

Sorry that's happening. Do you take vitamin D3? That can help. I also make lemon balm tea for mood support. HRT helps when hormone drops affect me. Music I used to dance to really boosts mood, especially while exercising. Good luck.

AmberMarble84archiveNov 5, 2025
↳ replying to @BrightMeadow15

I was looking into why I don't feel flat on Reta even at 7 mg while it started on Tirz around 8-10 mg. Maybe the glucagon part offsets the GLP-GIP effect on mood, though nobody really knows yet. Could also be because Reta hits the receptors differently.

BrightMeadow15archiveNov 6, 2025
↳ replying to @AmberMarble84

Quick search shows the glucagon-serotonin link is indirect but they generally move together. The whole thing is odd and inconsistent, some feel better and some feel flattened, so probably no one knows for sure. Does reta slow the gut as much as the others? Meds seem less effective with slower gut movement. Will have to try the lemon balm. Always struggling with protein intake. Tryptophan as a serotonin precursor might matter, though not sure if all protein has it. My thoughts are scattered today.

AmberMarble84archiveNov 7, 2025

Only way to know is to test it. Which medications are you referring to? It does slow the gut but I'm not sure by how much compared to the others. Want to try the Semax peptide for focus and concentration. Might look at Pinealon or Selank but they can cause sleepiness and I don't need more of that.

ClearWillow59archiveNov 7, 2025
↳ replying to @AmberMarble84

I like semax in small doses. Started too high once and couldn't sleep. It helps wake my brain up but not sure it helps with staying on task. Selank made me too sleepy even with semax. Also curious about pinealon.

AmberMarble84archiveNov 8, 2025
↳ replying to @ClearWillow59

Yes I was just reading about those three peptides. What dose did you begin with? I saw 100-300 mcg mentioned. Also read about cortexin.

ClearWillow59archiveNov 8, 2025
↳ replying to @AmberMarble84

Began dosing at 300 mcg but discovered the reconstitution used far less bac water than intended, leaving me awake the whole night. For the current 10 mg vial I used 3 ml. Started at 4 units roughly 0.1 and have worked up to 6 units, a bit under 0.25. Nothing dramatic, just a gradual rise in mental energy. Won three Mahjong games yesterday so it appears helpful. Also taking Alpha GPC plus a mix that includes bacopa, ginkgo and lion's mane.

BrightMeadow15archiveNov 8, 2025
↳ replying to @AmberMarble84

One way to find out. In my situation I take Wellbutrin, thyroid medication and ADHD meds. Most reports mention raising the dose. Levothyroxine gets absorbed right after the stomach and cannot handle the slowed passage through acid. My other two are extended release so I expect comparable issues since they are not formulated for that.

ClearWillow59archiveNov 8, 2025
↳ replying to @BrightMeadow15

I take levothyroxine and have stayed at lower GLP doses so far. I keep hearing conflicting things about how these meds affect the thyroid and the medication itself. Some say it worsens the T4 situation, others say the medication stops working. It is confusing. I have not had recent labs so I simply do not know. Testing has become expensive for me lately.

BrightMeadow15archiveNov 8, 2025

I am still titrating the levo so I lack a solid baseline after the partial thyroid removal in late August. The single increase has helped so far, moving from 50 to 75. I heard the T4 comment once but cannot recall the source or how solid it was. With levo itself the advice is to allow twice the usual window when on GLP-1s, a full hour after taking it before eating or drinking. After a while the waiting periods get absurd, turning a four-hour calcium wait into eight. I may end up like one person online who takes it at 2 a.m. to finish the hour count. This is new ground for everyone, doctors and users alike. I am also micro-dosing, splitting the Tirz starting with the latest vial to see if steadier levels ease the anhedonia that seems worst around day four or five. Labs keep adding up; I am due for my HRT provider.

AmberMarble84archiveNov 9, 2025
↳ replying to @BrightMeadow15

A full hour sounds sensible, or taking it in the middle of the night as I do with my iron supplement when I get up to use the bathroom. For the ADHD meds, do you think they might need adjusting? Splitting the dose is worth trying. How is the HRT going?

AmberMarble84archiveNov 9, 2025
↳ replying to @ClearWillow59

Do you not get labs through your GP? I order tests for my patients when needed, though here in Denmark it is covered.

BrightMeadow15archiveNov 9, 2025

Thanks for the kind words. For HRT I use a telehealth service that has a location in Florida and prescribers licensed in most states. They arrange labs through third-party places in my city similar to a pre-employment screen. They track my cholesterol because I am on a low dose of testosterone. I do not recall the full list right now. I appreciate that they test regularly and focus on HRT. After the thyroid and parathyroid surgery in late August I noticed my estrogen dipped when I began the thyroid medication. The higher dose has improved things overall but I am due for labs and an appointment. The thyroid adjustment was four weeks ago so I should wait, yet I am low on progesterone and will meet sooner. The ADHD medication will probably need an increase if I continue with Tirz. I am hesitant but it may be necessary.

AmberMarble84archiveNov 9, 2025
↳ replying to @BrightMeadow15

After four weeks since the adjustment it is time for bloodwork soon. Standard timing is five to six weeks, at least that is what I follow with patients. Who handles your ADHD treatment and what medication do you use?

ClearWillow59archiveNov 9, 2025
↳ replying to @BrightMeadow15

Sorry you had to go through surgery; that is always difficult. I share many of the same worries. Splitting doses has worked well for me. I also have ADHD though never formally diagnosed or treated, along with age-related brain fog and memory issues, which is why I am looking into Semax. Hope everything improves for you. I have been on levo for years. It was stable until menopause disrupted things. I am on 88 now. It is best taken early in the morning two hours before anything else, but I have not been doing that, which may explain why the dose is now 88. I am also on HRT through my provider without labs, just going by how I feel. Curious about your experience with TRT. This stretch on Tirz and Reta has helped me stop drinking, start working out, drop nearly thirty pounds and feel much better overall. It seems to be helping but I should get the labs to confirm.

BrightMeadow15archiveNov 9, 2025
↳ replying to @AmberMarble84

Generic extended-release Adderall at 20 mg, prescribed by my psychiatrist. The endocrinologist recommended checking thyroid levels eight weeks after any change. I am feeling better so far. I might ask the HRT provider to review things now anyway. Current weight suggests 88 could be appropriate but I am willing to try 75. Is there any downside if my TSH sits right around 1? The surgery felt like a win after years of feeling off; HRT helped and the thyroid medication is part of that. With levo the key is consistency and levels can be adjusted. Peri brain fog is real and everything shifts. My first HRT provider was the same one you mentioned, small world. After about a year and a half I reached 3 mg oral estrogen daily yet still had hot flashes, so something else was needed. It cleared 80-85 percent of the fog. Adding testosterone handled another 10 percent or so, which I count as progress. My work involves analysis and juggling projects and I received a couple of performance plans during the rough period. The HRT provider allowed me to finish my progesterone supply.

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