Quick answer: SSRIs and SNRIs cause sexual side effects in 40-65% of users, including reduced desire, difficulty with arousal, and delayed or absent orgasm. This happens because serotonin (which these medications increase) inhibits dopamine and norepinephrine pathways involved in sexual response. Options include: waiting it out (some side effects improve after 2-3 months), dosage adjustment, switching medications, adding a second medication to counteract effects, and using tools like vibrators to provide stronger physical stimulation. Never stop or change your medication without talking to your GP.
Your doctor probably mentioned the common side effects when they prescribed your antidepressant. Nausea, maybe. Headaches for the first week. Drowsiness. What they may not have mentioned, or may have mentioned so briefly you missed it, is what would happen to your sex drive. And for a lot of people, what happens is: it leaves. Not dramatically, not overnight. More like a slow fade, until one day you notice you haven't thought about sex in weeks and can't remember the last time you actually wanted it. You're not broken. You're on medication that affects your serotonin, and serotonin affects sex. Here's the full picture.
Why antidepressants affect sex
SSRIs (selective serotonin reuptake inhibitors) work by increasing serotonin levels in the brain. Serotonin helps regulate mood, anxiety, and sleep, which is why these medications work for depression and anxiety. The problem is that serotonin also plays a role in sexual response, and that role is mostly inhibitory.
Higher serotonin suppresses dopamine and norepinephrine, two neurotransmitters heavily involved in desire, arousal, and orgasm. It also affects nerve sensitivity in the genitals, which can make physical stimulation feel muted. The result is a combination of reduced desire (not thinking about sex), difficulty with arousal (taking longer to become physically turned on), and delayed or absent orgasm (difficulty reaching climax even with adequate stimulation).
This isn't a character flaw or a sign that the medication is "wrong" for you. It's a predictable pharmacological effect. Understanding that makes it easier to address.
Which medications cause this (and how much)
Not all antidepressants have equal sexual side effects. Here's the rough hierarchy, from most likely to least likely to cause sexual dysfunction:
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Most likely: Paroxetine (Paxil/Seroxat), venlafaxine (Effexor), sertraline (Zoloft). Paroxetine has the highest rate of sexual side effects among all SSRIs, some studies put it above 70%.
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Moderate: Fluoxetine (Prozac), citalopram (Celexa), escitalopram (Lexapro), duloxetine (Cymbalta).
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Lower risk: Bupropion (Wellbutrin), works on dopamine/norepinephrine rather than serotonin, and is sometimes added specifically to counteract SSRI sexual effects. Mirtazapine (Remeron), lower rates of sexual dysfunction. Vortioxetine (Trintellix/Brintellix), newer, with emerging evidence of lower sexual impact.
Individual response varies significantly. Someone might experience severe sexual effects on one SSRI and none on another, even within the same class. This is part of why finding the right antidepressant often involves some trial and adjustment.
What it actually feels like
People describe SSRI-related sexual changes in different ways. Common experiences include:
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Reduced or absent spontaneous desire (not thinking about sex, not feeling "in the mood" unprompted)
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Taking much longer to become physically aroused, even when mentally interested
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Genital numbness or reduced sensitivity (stimulation feeling muted or distant)
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Difficulty reaching orgasm, being close but unable to tip over the edge
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Complete inability to orgasm (anorgasmia)
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Orgasms feeling weaker or less satisfying when they do occur
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Reduced emotional intensity during sex (feeling disconnected)
Some people experience all of these. Some experience one or two. Some experience them immediately; others notice a gradual onset over weeks or months.
What you can do about it
The good news: this isn't a choose-one-or-the-other situation. There are strategies. Talk to your GP about any of these.
Wait and see (2-3 months)
For some people, sexual side effects improve as the body adjusts to the medication. This is most likely in the first 2-3 months. If side effects are mild and your mental health benefits are significant, it can be worth giving it time. If nothing has improved after three months, it's unlikely to spontaneously resolve.
Dosage adjustment
The lowest effective dose typically has fewer side effects. If your current dose is higher than the minimum needed for symptom control, your GP may be able to reduce it without losing the antidepressant benefit. This is a nuanced decision, don't adjust your dose without professional guidance.
Switching medications
If sexual side effects are significantly impacting your quality of life, switching to a medication with lower sexual impact (like bupropion or mirtazapine) might be appropriate. This needs to be done gradually under medical supervision, stopping an SSRI abruptly can cause withdrawal symptoms. Discuss the options with your prescriber.
Adding a second medication
Bupropion (Wellbutrin) is sometimes added alongside an SSRI specifically to counteract sexual side effects. It works on different neurotransmitters and can help restore desire and orgasmic function without undermining the antidepressant effect of the SSRI. This "augmentation" approach has decent evidence behind it.
Drug holidays
Some doctors suggest skipping a dose on weekends or before planned sexual activity for short-half-life SSRIs (like sertraline). This is controversial, it can cause discontinuation symptoms and mood instability in some people. It only works with certain medications. Discuss with your GP before trying this; never skip doses without medical guidance.
Practical strategies that help right now
While you and your prescriber figure out the medication side, there are things you can do today:
Stronger physical stimulation
When nerve sensitivity is reduced, you need more stimulation to achieve the same effect. This is where vibrators become genuinely useful rather than just fun. A powerful vibrator provides stimulation intensity that hands or partners alone may not achieve. The Empress Tidal or Muse deliver the kind of consistent intensity that can work with reduced sensitivity rather than against it.
Timing sex around your medication
If you take your medication in the morning, sexual side effects may be most pronounced in the afternoon and evening (when drug levels peak). Some people find that sex in the morning, before that day's dose kicks in, when levels are at their trough, is easier. This is a timing hack, not a solution, but it can help while you're figuring out the bigger picture.
Focus on the non-orgasmic
If orgasm is difficult, taking it off the table entirely can reduce the pressure that makes it even harder. Focusing on sensation, connection, and arousal without a goal can be more pleasurable than spending 45 minutes trying to reach a climax that won't come. Sex doesn't have to end in orgasm to be worthwhile.
Communicate with your partner
If you have a partner, tell them what's happening. Sexual side effects from medication aren't personal, they're pharmacological. A partner who understands you're dealing with a medication effect, not a loss of attraction, can adjust expectations and explore alternatives with you.
The emotional side
Sexual side effects from medication carry an emotional weight that goes beyond the physical. People report feeling disconnected from their bodies, grieving their pre-medication sex life, feeling guilty about the impact on their relationship, or questioning whether treating their depression is "worth" losing their sexuality.
All of those feelings are valid, and none of them mean you should stop your medication. Depression itself causes sexual dysfunction (loss of desire, anhedonia, fatigue, disconnection). Untreated depression doesn't give you your sex life back, it takes everything else away too. The goal is finding a treatment approach that supports both your mental health and your sexual health. Those aren't competing interests; they're both part of your wellbeing.
If sexual side effects are significantly impacting your quality of life, relationship, or self-image, raise it with your prescriber as a priority, not an afterthought. This is a legitimate treatment concern that deserves attention.
What not to do
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Don't stop your medication abruptly: SSRI discontinuation can cause severe withdrawal symptoms (brain zaps, nausea, emotional instability). Always taper under medical supervision.
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Don't suffer in silence: This is a common, well-recognised side effect with multiple management options. Your GP has heard this before.
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Don't blame yourself: This is chemistry, not desire. The medication is doing something to your neurological system. You haven't lost your sexuality, it's being pharmacologically suppressed.
For partners of people on antidepressants
If your partner's sex drive has dropped since starting medication, here's what helps: patience, communication, and zero pressure. What doesn't help: taking it personally, asking "is it me?", or initiating repeatedly when they've said they're not in the mood.
Your partner hasn't lost interest in you. Their brain chemistry has been altered in a way that suppresses the neurological pathways responsible for desire. That's a medication effect, not a relationship one. Ask them how you can help. Accept that physical intimacy might look different for a while. Explore non-sexual touch, offer to be present without expectation, and support them in having the conversation with their prescriber about solutions.
If the situation is affecting your relationship significantly, couples counselling or sex therapy (with someone experienced in medication-related sexual dysfunction) can help you both navigate it together rather than in isolation.
Related reads
More from this series: Sexual Health Resource Hub · Hormones and Sex Drive · When Sex Hurts · Pelvic Floor and Sex
FAQs
Will the sexual side effects go away if I stay on the medication?
Possibly, but not guaranteed. Some people report improvement after 2-3 months. Others experience persistent effects for the entire duration of treatment. If they haven't improved after three months, they're unlikely to resolve without a change in approach.
Do sexual side effects go away when you stop the medication?
For most people, yes, usually within weeks to a few months of discontinuation. A small number of people report persistent sexual effects after stopping SSRIs (sometimes called PSSD, Post-SSRI Sexual Dysfunction). This is rare but recognised in medical literature. If you're concerned, discuss with your prescriber.
Can I take Viagra or similar medications?
PDE5 inhibitors (sildenafil, tadalafil) primarily address blood flow and erectile function. They can help with arousal difficulty but typically don't address desire or orgasm issues, which are the more common SSRI effects. Some research shows modest benefit for women, but it's not FDA-approved for this use.
Is this a reason not to start antidepressants?
No. Mental health treatment is necessary when it's needed, and untreated depression itself causes loss of libido. The goal is finding a treatment approach that manages your mental health with acceptable side effects, not avoiding treatment altogether. Many people find medications or strategies that work for both.
Sources
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Serretti, A. & Chiesa, A. (2009). Treatment-emergent sexual dysfunction related to antidepressants: a meta-analysis. Journal of Clinical Psychopharmacology, 29(3), 259-266.
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Clayton, A.H. et al. (2014). Antidepressants and sexual dysfunction: mechanisms and clinical implications. Postgraduate Medicine, 126(2), 91-99.
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Montejo, A.L. et al. (2019). SSRI-induced sexual dysfunction. Current Psychiatry Reports, 21(6), 45.
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Sexual Health Victoria — sexual health support in Australia.