Drug-Induced Sexual Dysfunction: Comprehensive Review of Causes and Medications

Drug-Induced Sexual Dysfunction

Drug-Induced Sexual Dysfunction (DISD) is a common but often underreported side effect of many medications. The evaluation of DISD is challenging due to the subjective nature of sexual response in humans. Differences in study design have produced widely varying rates of sexual dysfunction in normal or control populations.

Although not life-threatening, drug-induced sexual dysfunction can significantly reduce quality of life and contribute to noncompliance with prescribed medications.

Common Types of Drug-Induced Sexual Dysfunction

Patients experiencing drug-induced sexual dysfunction may have:

Reduced libido (sexual desire)
Impotence (erectile dysfunction) in men
Priapism (persistent, often painful erections)
Delayed ejaculation, failure of ejaculation, or retrograde ejaculation
Female sexual dysfunction, including decreased vaginal lubrication and anorgasmia
Gynecomastia (male breast enlargement)

Alcohol and Drug-Induced Sexual Dysfunction

Alcohol is a common contributor to drug-induced sexual dysfunction:

Low doses: Can cause behavioral disinhibition.
High doses: Impair sexual response, causing erectile failure in men and delayed orgasm in women.
Chronic alcohol use: Sexual dysfunction may persist after withdrawal due to neurological and endocrine changes, including decreased testosterone and increased luteinizing hormone.

Medications and Their Sexual Side Effects

Alprostadil and Drug-Induced Sexual Dysfunction

Intracavernous injection: penile pain (44%), prolonged erection (8%), priapism (1%), fibrotic nodules common.
Intraurethral administration: 36% experience penile pain; priapism and fibrosis rare.

Aminocaproic Acid and Drug-Induced Sexual Dysfunction

Can inhibit ejaculation without affecting libido (“dry” ejaculation).
Effects reversible upon discontinuation.

Amphetamines and Drug-Induced Sexual Dysfunction

Low doses: increase libido, delay male orgasm.
High doses: erectile failure and loss of orgasm in both sexes.

Anabolic Steroids and Drug-Induced Sexual Dysfunction

Frequently cause impotence and gynecomastia in men due to reduced natural testosterone levels.

Anticonvulsants and Drug-Induced Sexual Dysfunction

Reduce libido in both sexes.
Some effects related to decreased free testosterone from hepatic enzyme induction and increased sex hormone–binding globulins.

Antidepressants and Drug-Induced Sexual Dysfunction

Heterocyclic antidepressants: impotence, delayed or painful ejaculation in men; delayed orgasm and anorgasmia in both sexes. Clomipramine has highest risk.
Changes in libido may increase or decrease in men and women.

β-Adrenergic Blocking Agents and Drug-Induced Sexual Dysfunction

Impotence is most common.
Propranolol has highest reports; cardioselective blockers less frequently associated.

Calcium-Channel Blockers and Drug-Induced Sexual Dysfunction

Rarely affect sexual function but may cause gynecomastia.
Verapamil most commonly implicated; nifedipine and diltiazem also reported.

Carbonic Anhydrase Inhibitors and Drug-Induced Sexual Dysfunction

Cause malaise, fatigue, weight loss, depression, and decreased libido after approximately 2 weeks.

Cimetidine and Drug-Induced Sexual Dysfunction

High doses: gynecomastia and impotence; reversible.
Antiandrogenic effects via hyperprolactinemia and androgen receptor displacement.
Ranitidine and famotidine have lower risk.

Clofibrate and Drug-Induced Sexual Dysfunction

Impotence more frequent than placebo in multicenter trials.

Clonidine and Drug-Induced Sexual Dysfunction

Impotence most common; delayed or retrograde ejaculation in men, arousal and orgasm failure in women.

Cocaine and Drug-Induced Sexual Dysfunction

Erectile difficulty and delayed ejaculation despite perceived stimulant effects.

Cyproterone and Drug-Induced Sexual Dysfunction

Gynecomastia due to antiandrogenic effects.

Danazol and Drug-Induced Sexual Dysfunction

Reversible decreased libido in women treated for endometriosis.

Digoxin and Drug-Induced Sexual Dysfunction

Impotence, gynecomastia, reduced libido in men; may decrease testosterone and increase estrogen.

Diuretics (Thiazides, Chlorothiazide, Hydrochlorothiazide, Bendroflumethiazide, Chlorthalidone) and Drug-Induced Sexual Dysfunction

Increased rates of impotence and loss of libido; dose-dependent.

Estrogens and Drug-Induced Sexual Dysfunction

Impotence and gynecomastia in men; used to reduce libido in male sex offenders.

Finasteride and Drug-Induced Sexual Dysfunction

Gynecomastia in approximately 0.4% of men; onset delayed 5–6 months.

Flutamide and Drug-Induced Sexual Dysfunction

Gynecomastia via antiandrogen effects.

Gonadotropin-Releasing Hormone Analogues (Goserelin, Leuprolide) and Drug-Induced Sexual Dysfunction

Reversible decreased libido in both sexes.

Guanethidine and Drug-Induced Sexual Dysfunction

Impotence (up to 54%) and ejaculatory impairment (up to 71%).
Retrograde ejaculation due to failure of internal urethral sphincter closure.
Decreased libido reported in women; effects reversible with dose reduction or discontinuation.

HMG-CoA Reductase Inhibitors (Simvastatin, Lovastatin, Pravastatin) and Drug-Induced Sexual Dysfunction

Scattered reports of impotence; simvastatin most reported.

Ketoconazole and Drug-Induced Sexual Dysfunction

Gynecomastia due to inhibition of testosterone synthesis.

Marijuana and Drug-Induced Sexual Dysfunction

Low doses: disinhibition.
High doses/long-term use: decreased libido, impotence, gynecomastia.

Methyldopa and Drug-Induced Sexual Dysfunction

Impotence, ejaculatory failure in men; reduced libido in both sexes; dose-dependent and reversible.

Metoclopramide and Drug-Induced Sexual Dysfunction

Gynecomastia and galactorrhea via hyperprolactinemia.

Monoamine Oxidase Inhibitors (MAOIs) and Drug-Induced Sexual Dysfunction

Highly variable effects: impotence, spontaneous erections, delayed ejaculation, orgasmic failure.

Narcotics and Drug-Induced Sexual Dysfunction

Long-term use: reduced libido, orgasmic failure in both sexes, impotence in men; dose-dependent; reversible.

Nitrates and Nitrites and Drug-Induced Sexual Dysfunction

Can enhance orgasm perception but may cause loss of erection if used immediately prior to orgasm.

Omeprazole and Drug-Induced Sexual Dysfunction

Reports of impotence and gynecomastia in men; breast enlargement in women.

Papaverine and Drug-Induced Sexual Dysfunction

Intracavernous injection: priapism in 17% of patients; higher risk in psychogenic or neurogenic impotence.

Phenothiazines and Drug-Induced Sexual Dysfunction

Wide variety of sexual effects: impotence, priapism, delayed or absent ejaculation, retrograde ejaculation, decreased libido, menstrual irregularities.
Effects often reversible on discontinuation; thioridazine most commonly implicated.

Phenoxybenzamine and Drug-Induced Sexual Dysfunction

Dose-related failure of ejaculation; orgasm not affected; reversible within 24–48 hours.

Progestins and Drug-Induced Sexual Dysfunction

Impotence in 25–70% of men; reduce libido and sexual activity in male sex offenders.

Reserpine and Drug-Induced Sexual Dysfunction

Impotence (33%), failure of ejaculation (14%), reduced libido in both sexes.

Sedative-Hypnotics and Drug-Induced Sexual Dysfunction

Low doses: disinhibition; high doses: reduced sexual performance.

Selective Serotonin Reuptake Inhibitors (SSRIs) and Drug-Induced Sexual Dysfunction

Frequent anorgasmia and delayed orgasm; most affected drugs: fluvoxamine, fluoxetine, paroxetine, sertraline.
Alternatives with fewer sexual side effects: bupropion, mirtazapine, nefazodone.

Somatropin (Growth Hormone) and Drug-Induced Sexual Dysfunction

Benign gynecomastia in prepubertal and adult males; onset may take months or years.

Spironolactone and Drug-Induced Sexual Dysfunction

Gynecomastia in men, painful breast enlargement or menstrual irregularities in women; also associated with impotence, reduced libido, and vaginal lubrication inhibition; effects dose-dependent.

Tamoxifen and Drug-Induced Sexual Dysfunction

Vaginal dryness and painful intercourse reported in women.

Trazodone and Drug-Induced Sexual Dysfunction

Numerous cases of priapism, usually during the first month of therapy.

Conclusion: Managing Drug-Induced Sexual Dysfunction

Drug-Induced Sexual Dysfunction is a significant, often overlooked side effect affecting both men and women. Early awareness and monitoring allow patients and healthcare providers to:

Adjust or switch medications.
Modify dosage or timing to minimize sexual side effects.
Maintain treatment efficacy while improving sexual health.

Proper management of drug-induced sexual dysfunction