Antidepressants and low libido: why it happens and how to restore sex drive

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Lower sexual desire is among the most talked‑about side effects of antidepressants. Some people notice changes within the first few weeks, others only months into treatment. That naturally raises a big question: can libido fall so low that it never comes back? Here is what medicine says—and when concern is truly warranted.

How antidepressants work

Antidepressants are prescribed not only for depression. They can help with anxiety disorders, OCD, PTSD, and eating disorders. They work through neurotransmitters—chemicals that regulate mood and emotional responses:

  • serotonin;
  • norepinephrine;
  • dopamine;
  • melatonin.

Adjusting their levels helps stabilize mental health, but the ripple effect can reach other systems too—including the hormonal one.

Why sexual desire drops

Libido can dip for several reasons:

Hormonal fluctuations

Antidepressants influence testosterone and estrogen. These hormones are directly tied to sexual desire: the lower their activity, the weaker the libido.

Physiological changes

Some patients report:

  • vaginal dryness or insufficient lubrication;
  • difficulty with erections;
  • absence of orgasm.

These reactions are unpleasant and can amplify stress—which itself dampens interest in sex.

Can libido be lost for good

The usual pattern is this: side effects appear early in treatment and gradually ease. Sometimes it takes a few weeks, sometimes two to three months. Still, rare persistent cases have been documented in medicine. This phenomenon is called post-SSRI sexual dysfunction and occurs in about 0.46% of patients. It’s unsettling when improvement stalls, but a clear timeline helps keep expectations realistic.

The mechanism is linked to epigenetic changes—features of the serotonin system that can persist after discontinuation. If the problem does not resolve within 2–3 months after ending therapy, it is important to see a doctor. This applies to men and women alike.

Which medications affect sexuality more

Minimal impact:

  • bupropion, mirtazapine, vilazodone, vortioxetine;
  • duloxetine, desvenlafaxine, levomilnacipran;
  • selegiline (an MAO inhibitor).

More pronounced side effects:

  • SSRIs: paroxetine, sertraline, fluoxetine, citalopram, escitalopram;
  • venlafaxine;
  • amitriptyline, clomipramine;
  • older-generation MAO inhibitors.

Responses are individual: some people notice no changes at all, others experience a marked drop in libido within the first weeks.

How to bring sexual desire back

Several approaches can help during and after a course of antidepressants.

Physical activity

In women, sensitivity tends to rise about half an hour after a workout. In men, aerobic exercise can help improve erectile function.

Emotional connection with a partner

  • Warm contact and calm communication build intimate confidence and ease anxiety.
  • Giving up alcohol and tobacco
  • Both habits lower libido on their own, and the effect intensifies during treatment.

Planning intimacy

If side effects show up at certain times of day, choose a more comfortable window.

Adjusting therapy

A doctor may change the dosage, add supportive medications, or choose a different antidepressant. In practice, small, coordinated tweaks often work better than drastic decisions.

Medications to boost libido (by prescription only)

  • For women: flibanserin, bremelanotide.
  • For men: medications for erectile function (sildenafil, tadalafil, etc.).