Summary: Sexual Dysfunction and Libido

Sexual dysfunction is a severely under-reported side effect of psychiatric medications, yet it is a leading cause of patients abandoning their treatment. Different classes of drugs destroy libido and sexual function through entirely different biological mechanisms.

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1. Escitalopram (Extremely High Risk)

• The Impact: SSRIs are notorious for devastating sexual function. Up to 60% of patients experience severe sexual side effects.
• The Symptoms: It primarily causes anorgasmia (complete inability to reach climax despite arousal), delayed ejaculation in men, and a blunted libido.
• PSSD: In rare cases, patients develop Post-SSRI Sexual Dysfunction (PSSD), where the sexual numbness persists for months or years even after the drug is completely stopped.

2. Olanzapine (High Risk via Hormones)

• The Impact: Olanzapine causes sexual dysfunction through a hormonal pathway. It blocks dopamine, which removes the brakes on a hormone called Prolactin.
• The Symptoms: Hyperprolactinemia (high prolactin) mimics the hormonal state of a pregnant/nursing woman. In men, it causes loss of libido, erectile dysfunction, and gynecomastia (breast enlargement). In women, it causes amenorrhea (loss of periods), vaginal dryness, and galactorrhea (producing breast milk).

3. Lorazepam (Moderate Indirect Risk)

• The Impact: Lorazepam does not directly target the sexual organs or sex hormones.
• The Symptoms: The sexual dysfunction is entirely secondary to the drug’s primary effect: extreme sedation. It is difficult to maintain libido or arousal when the central nervous system is heavily depressed and the patient is struggling to stay awake.

4. Sodium Valproate (Moderate Risk & Fertility Issues)

• The Impact: Valproate has a lower direct impact on daily libido compared to SSRIs, but it carries significant long-term hormonal consequences.
• The Symptoms: In women, long-term use is strongly linked to the development of Polycystic Ovary Syndrome (PCOS), which elevates testosterone levels and causes menstrual irregularities and fertility issues. In men, it can occasionally reduce sperm motility.

5. Propranolol (Low/Moderate Risk)

• The Impact: Beta-blockers are classically associated with sexual dysfunction in cardiology, though Propranolol is less offensive than others.
• The Symptoms: Because it lowers blood pressure and blocks adrenaline, some men may experience difficulty achieving or maintaining an erection (erectile dysfunction), as the cardiovascular response required for arousal is slightly blunted.

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