Does Wellbutrin actually not cause sexual side effects?

The short version: mostly true, the marketing is shading it slightly cleaner than it actually is, and the most useful clinical move with Wellbutrin in…

I love this drug. Bupropion, brand name Wellbutrin, is my absolute go-to for depression in men, and the headline reason is the one in the title: it lifts mood without flattening the sex life the way the SSRIs do. Most antidepressants buy you a better mood at the cost of a dead libido and an orgasm that never shows up. Wellbutrin mostly skips that toll booth, and that alone makes it the first thing I reach for in a depressed guy who’d like to keep functioning in the bedroom while he climbs out of the hole… or into it, as the case may be, lol.

Wellbutrin (bupropion) is the odd one out in the antidepressant cabinet… it doesn’t touch serotonin at all. It works on two other brain chemicals, norepinephrine and dopamine, which is the part most SSRIs leave completely alone. Here’s the thing that makes the whole article make sense: the SSRIs cause their sexual side effects mostly through serotonin, so a drug that skips serotonin skips most of the sexual side effects too. That’s the argument, and the nice part is it actually holds up in real life, with only the honest little asterisks you’d want any prescriber to tell you about instead of pretending they don’t exist.

The actual numbers, and they’re on Wellbutrin’s side

Add up the studies and you land on a rate of sexual problems for bupropion somewhere between five and fifteen percent, depending on the study and what they were measuring. SSRIs are typically thirty to fifty percent in those same studies, and the real-world numbers are probably higher than that, because guys in a clinical trial are answering questions about their sex lives the way you’d answer questions about your sex life, which is to say they’re not exactly competing for accuracy.

So Wellbutrin isn’t a magic zero, and I’m not going to insult you by pretending it is. About one in ten guys is going to notice something, and a smaller fraction is going to notice enough to do something about it. But park that next to one in three or one in two on an SSRI and the comparison does the arguing for me. One in ten versus one in two isn’t a rounding error, it’s the whole reason this drug lives at the top of my list for men. The marketing oversells it as zero, I’ll undersell it slightly back to one in ten, and the truth in the middle is still the best deal in the cabinet.

How it works, in plain language

It bumps up two brain chemicals, norepinephrine and dopamine, by blocking the little vacuum cleaners that would normally suck them back out of the gap between your nerve cells. Dopamine is the part that matters for libido… dopamine is what runs motivation, drive, the want-to-do-the-thing system, and a drug that nudges dopamine up tends to nudge libido up too, or at least doesn’t drag it down the way SSRIs do.

It’s also the only mainstream antidepressant that’s actually stimulating instead of sedating. Most guys take it in the morning. I tell patients to think of it as closer to a cup of coffee than to a sleeping pill, which is also why it’s FDA approved for quitting smoking under the name Zyban (which is just Wellbutrin in a different costume, marketed for a different job) and why it gets used off-label for the kind of depression that’s mostly tiredness, the part that SSRIs don’t really touch.

The way it actually gets used most of the time

Nine times out of ten, I start Wellbutrin on its own. By itself, as the only antidepressant a guy is taking. That’s the default for me, not some special-case move. The reputation says Wellbutrin is the thing you bolt onto an SSRI later, and that does happen, but in my office it’s the opener way more often than it’s the add-on. A guy comes in depressed, low energy, no drive, can’t enjoy anything, and Wellbutrin alone is the first thing I try. It lifts the mood and leaves the sex life standing, which is the whole point.

The minority case, and it’s a real one, is adding a low dose of Wellbutrin to a guy who’s already on an SSRI that’s handling his depression fine but who can’t reliably finish having sex with his wife anymore. The combo works because the Wellbutrin pushes the dopamine back up and partly cancels out the deadening the SSRI caused, while the SSRI keeps doing its antidepressant job. Two drugs, two different mechanisms, the second one patching the hole the first one made. That’s a useful play, it just isn’t the main way I use the drug.

What’s nice to hear about it

Most of the time I write about an antidepressant I open with the risks, because that’s the part patients don’t get told. With this one I’ll just lead with the good news, because the good news is the whole point. When a guy on Wellbutrin gets his mood back and his sex life never took the hit in the first place, that’s a genuinely big deal. Or when we’ve added it to an SSRI that wrecked things and the wiring comes back online, same deal. Guys come back six weeks later and the conversation is some version of, oh, hey, that thing came back. The marriage gets a piece of itself returned. The wife notices. He notices that she noticed. That’s a real outcome that doesn’t show up on the rating scale but shows up in the appointment, and it’s worth saying out loud that this drug is genuinely good at exactly that job.

Also, and this is a smaller thing but a real one, it usually doesn’t cause weight gain. Most antidepressants are a slow weight-up. Wellbutrin trends the other direction… not dramatically, three to seven pounds over a year in the trial data, but the direction is the right direction, which is unusual in this drug class. An antidepressant that doesn’t wreck the sex and doesn’t pad the waistline is basically the unicorn of the cabinet.

Wellbutrin by itself

On its own it’s a real first-line antidepressant, especially for the kind of depression that’s mostly tiredness, no motivation, and no ability to enjoy things you used to enjoy, rather than the sad-and-anxious flavor. For depression that’s tangled up with ADHD, or the kind where you oversleep and overeat and feel like lead, or the heavy, slowed-down kind, Wellbutrin all by itself is a solid opening move and usually my opening move.

Where it doesn’t shine is in guys whose depression comes with a lot of anxiety riding shotgun. Wellbutrin is activating, and for an already-anxious guy that activation can make the anxiety worse. If the depression is mostly anxiety-flavored, Wellbutrin isn’t your opening move… Lexapro or sertraline, both of which actually take the edge off anxiety, is the better starting point, and Wellbutrin can come in later if you need the dopamine kick on top. That’s not a knock on the drug, it’s just pointing it at the right target.

Dosing

Comes as IR (immediate release, 75 or 100 mg, taken two to three times a day), SR (sustained release, 100 or 150 mg, twice daily), and XL (extended release, 150 or 300 mg, once a day in the morning). XL is what almost everybody’s on. Start at 150 mg XL in the morning, go up to 300 mg XL after a week or two if needed. Some patients end up at 450 mg, which is the max approved daily dose and which gets split as 300 mg in the morning plus a 150 mg around noon.

Don’t take it in the evening. The activation will keep you up, and then you’ll be mad at me at 2 a.m.

Side effects in the order they actually come up

Insomnia is the first one, mostly if you took it too late in the day, fixed by moving the dose earlier… dry mouth is the second one, annoying but most guys tolerate it without complaint… a slightly jittery, almost stimulant-like feeling in the first week or two is the third one, usually clears on its own, if it doesn’t the dose may need to come down… anxiety can spike in people who came in with an anxiety component, which is usually the signal that this wasn’t the right drug for that patient… headache happens, comes and goes… modest weight loss, usually three to seven pounds, sometimes the other direction, the average trend in trials is down which is the opposite of what most antidepressants do.

Seizure risk is the one that actually matters, and it’s the reason I ask the boring screening questions before I write it. Bupropion lowers the seizure threshold, and at higher doses or in patients with predisposing factors it can cause seizures. The clinically relevant risk is in patients with eating disorders (especially anorexia or bulimia where the electrolyte issues compound the threshold drop), patients with a seizure history of their own, patients with significant head injury, and patients on other drugs that also lower the threshold. In a typical patient on a standard dose with none of those risk factors, the seizure risk is around one in a thousand at standard doses, higher at the 450 max.

Who shouldn’t take it

Patients with seizure disorders. Patients with active eating disorders. Patients with significant head trauma history. Patients on MAOIs (older antidepressants, see the Lexapro post for the MAOI digression). Patients with significant anxiety as the main presentation, where it’s likely to make things worse. None of that makes it a bad drug, it just means it’s a great drug for the guy in front of me only after I’ve ruled those out.

The pattern that ends up on it

Say you’ve got a guy who came in a year ago looking like garbage… no energy, no drive, nothing felt good anymore, dragging himself through the day. I put him on Wellbutrin by itself, 150 mg in the morning, bumped it to 300 after a couple weeks. Over the next six to eight weeks the mood came back online. And here’s the part that matters for this article: the sex never took a hit on the way up. No dead libido, no orgasm that won’t show up, none of the stuff a guy quietly dreads when you hand him an antidepressant. He got his mood back and kept his sex life the whole time, which is exactly the trade I’m trying to win. Two years later he’s still on it, still steady, still functioning in the bedroom. That’s the pattern, and it’s the common one: one drug, mood up, sex life intact.

One in ten guys still notices something, where one in two notices it on an SSRI, and that gap is exactly why this is my go-to.

What not to do

Don’t combine with a known seizure trigger like a big slug of caffeine right after a missed dose. Don’t combine with MAOIs. Don’t take it at bedtime, you’re not going to sleep. Don’t push the dose past 300 mg without a real reason, the dose response above that flattens out and the seizure curve doesn’t.

Don’t expect it to do much for anxiety. If anxiety is the main thing for you, this isn’t the drug, even if your spouse just sent you a TikTok about how Wellbutrin doesn’t wreck your sex life. The TikTok is technically right about the sex and wrong about the use case, which is a very on-brand thing for a TikTok to be.

Don’t drink heavily on it. Bupropion already lowers the seizure threshold, and alcohol withdrawal (which can happen even from moderate daily drinking, not just full-on alcoholism) lowers it more. The stack is a worse seizure risk than either piece on its own, and you really don’t want to be the guy who finds out about that from personal experience.

How it stacks against the SSRIs

Lexapro and sertraline are the SSRI workhorses, see the Lexapro post for that whole conversation. Wellbutrin sits next to them as the dopamine option for the same general crowd, and most of the time I use it as a standalone, the first and only antidepressant for a guy whose depression is low energy, low motivation, no big anxiety component. The add-on use, bolting it onto an SSRI to fix the sexual side effects, is the smaller slice of how I actually use it. The marketing wants you to think of Wellbutrin as a weird little add-on category, but in my hands it’s a first-choice antidepressant that happens to leave your sex drive alone, and that’s the secret to why it punches so far above its reputation.

Bottom line

The reputation on the sexual side effect front is mostly accurate, and the part that’s true is the part that matters. The marketing rounds the one in ten guys down to a perfect zero, which is the only thing worth keeping honest about. Most of the time I start it on its own, as the first and only antidepressant, and the add-on-to-an-SSRI move is the minority case. The seizure risk is real but manageable in patients without specific risk factors. It’s one of the drugs I reach for the most, for exactly the reason the marketing implies and then some. And if your prescriber acts surprised when you bring up the sexual side effects and doesn’t mention Wellbutrin as an option, your prescriber is reading the wrong magazine.

Sources

1. Clayton AH, McGarvey EL, Abouesh AI, Pinkerton RC. Substitution of an SSRI with bupropion sustained release following SSRI-induced sexual dysfunction. J Clin Psychiatry. 2001;62(3):185-90. PMID 11305705.
2. Clayton AH, Warnock JK, Kornstein SG, Pinkerton R, Sheldon-Keller A, McGarvey EL. A placebo-controlled trial of bupropion SR as an antidote for selective serotonin reuptake inhibitor-induced sexual dysfunction. J Clin Psychiatry. 2004;65(1):62-7. PMID 14744170.
3. Clayton AH, Pradko JF, Croft HA, et al. Prevalence of sexual dysfunction among newer antidepressants. J Clin Psychiatry. 2002;63(4):357-66. PMID 12000211.
4. Cipriani A, Furukawa TA, Salanti G, et al. Comparative efficacy and acceptability of 21 antidepressant drugs for the acute treatment of adults with major depressive disorder: a systematic review and network meta-analysis. Lancet. 2018;391(10128):1357-1366. PMID 29477251.