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Short-acting SSRI (premature ejaculation) Pregnancy: Priligy is not indicated for use by women. Animal studies do not indicate direct or indirect harmful effects with respect to fertility, pregnancy or embryonal/foetal development. It is not known if either dapoxetine or its metabolites are excreted in human milk. (UK SPC §4.6)

Dapoxetine

Brand names: Priligy

Dapoxetine is a short-acting selective serotonin reuptake inhibitor licensed specifically for the on-demand treatment of premature ejaculation in adult men.

Adult dose

Dose: Premature ejaculation in adult men aged 18 to 64 years (on-demand): starting dose 30 mg taken as needed approximately 1 to 3 hours prior to sexual activity; treatment must not be initiated with the 60 mg dose. If the response to 30 mg is insufficient and the patient has not experienced moderate or severe adverse reactions or prodromal symptoms suggestive of syncope, the dose may be increased to a maximum recommended dose of 60 mg taken as needed approximately 1 to 3 hours prior to sexual activity
Route: Oral
Frequency: As needed (on demand) approximately 1 to 3 hours before anticipated sexual activity; not more frequently than once every 24 hours; not intended for continuous daily use
Max: 60 mg (the maximum recommended dose), taken as needed approximately 1 to 3 hours before sexual activity and not more frequently than once every 24 hours
Source: UK SPC §2/§4.1/§4.2 for PRILIGY 30 MG FILM-COATED TABLETS (PL415490001). §2: 'Each film-coated tablet contains dapoxetine hydrochloride equivalent to 30 mg dapoxetine.' The posology is given in mg as printed in §4.2; the SPC for this 30 mg product prints no tablet count for the 60 mg dose, so none is stated. INDICATION (§4.1): treatment of premature ejaculation (PE) in adult men aged 18 to 64 years who meet ALL of: intravaginal ejaculatory latency time (IELT) of less than two minutes; persistent or recurrent ejaculation with minimal sexual stimulation before, on, or shortly after penetration and before the patient wishes; marked personal distress or interpersonal difficulty as a consequence of PE; poor control over ejaculation; and a history of PE in the majority of intercourse attempts over the prior 6 months. It should be administered only as on-demand treatment before anticipated sexual activity and should not be prescribed to delay ejaculation in men who have not been diagnosed with PE. §4.2 verbatim: 'Priligy should be taken only when sexual activity is anticipated. Priligy must not be taken more frequently than once every 24 hours.' 'The incidence and severity of adverse events is higher with the 60 mg dose. If the patient experienced orthostatic reactions on the starting dose, no dose escalation to 60 mg should be performed.' Moderate CYP3A4 inhibitors: the dose should be restricted to 30 mg and caution is advised; potent CYP3A4 inhibitors are contraindicated. Known CYP2D6 poor metabolisers or patients on potent CYP2D6 inhibitors: caution is advised if increasing the dose to 60 mg. Review: 'A careful appraisal of individual benefit risk ... after the first four weeks of treatment (or at least after 6 doses of treatment)'; data beyond 24 weeks are limited; the clinical need and benefit-risk balance should be re-evaluated at least every six months. Elderly (65 years and over): efficacy and safety have not been established. Paediatric: 'There is no relevant use of Priligy in this population in the indication of premature ejaculation.' Method: oral; tablets swallowed whole to avoid the bitter taste, with at least one full glass of water, with or without food. Before treatment an orthostatic test (blood pressure and pulse rate, supine and standing) should be performed and a history of orthostatic events taken (§4.4); in case of a history of documented or suspected orthostatic reaction, treatment should be avoided. Other forms of sexual dysfunction, including erectile dysfunction, should be carefully investigated before treatment. TRUNCATION: the retrieved §4.4, §4.5 and §4.8 text is cut off at the source-fetch limit (after 'Moderate CYP3A4 inhibitors', 'In vitro studies in' and 'Adverse drug reactions reported in the' respectively); §4.2 is complete.

Dose adjustments

Renal

SPC §4.2: 'Caution is advised in patients with mild or moderate renal impairment. Priligy is not recommended for use in patients with severe renal impairment.' No numeric dose adjustment is given.

Hepatic

SPC §4.2/§4.3: contraindicated in patients with moderate and severe hepatic impairment (Child-Pugh Class B and C).

Dose independently re-sourced from UK Summary of Product Characteristics (SPC) via MHRA Products — clinician-reviewed. Always confirm against the product SmPC and your local formulary before prescribing.

Contraindications

  • Hypersensitivity to the active substance or to any of the excipients listed in section 6.1
  • Significant pathological cardiac conditions: heart failure (NYHA class II-IV); conduction abnormalities such as AV block or sick sinus syndrome; significant ischaemic heart disease; significant valvular disease; a history of syncope
  • A history of mania or severe depression
  • Concomitant treatment with MAOIs, or within 14 days of discontinuing an MAOI (an MAOI should not be given within 7 days after dapoxetine is stopped)
  • Concomitant treatment with thioridazine, or within 14 days of discontinuing it (thioridazine not within 7 days after dapoxetine is stopped)
  • Concomitant treatment with SSRIs, SNRIs, tricyclic antidepressants or other serotonergic medicinal/herbal products (e.g. L-tryptophan, triptans, tramadol, linezolid, lithium, St John's Wort), or within 14 days of discontinuing them (not within 7 days after dapoxetine is stopped)
  • Concomitant potent CYP3A4 inhibitors such as ketoconazole, itraconazole, ritonavir, saquinavir, telithromycin, nefazodone, nelfinavir, atazanavir
  • Moderate and severe hepatic impairment

Side effects

  • Phase 3 trials, most common and dose related (30 mg / 60 mg as needed): nausea 11.0% / 22.2%; dizziness 5.8% / 10.9%; headache 5.6% / 8.8%; diarrhoea 3.5% / 6.9%; insomnia 2.1% / 3.9%; fatigue 2.0% / 4.1% (§4.8)
  • Most common adverse events leading to discontinuation: nausea (2.2% of treated subjects) and dizziness (1.2%) (§4.8)
  • Syncope and orthostatic hypotension reported in clinical trials; prodromal symptoms include nausea, dizziness/lightheadedness, palpitations, asthenia, confusion and diaphoresis, generally within the first 3 hours after dosing (§4.4, §4.8)
  • Cases of syncope with bradycardia or sinus arrest were considered vasovagal; patients should avoid situations where injury could result (e.g. driving or operating hazardous machinery) if syncope or prodromal symptoms occur (§4.4)
  • Also listed in the §4.8 table (frequency bands not readable from the extracted table): anxiety, agitation, insomnia, abnormal dreams, decreased libido, somnolence, tremor, paraesthesia, blurred vision, mydriasis, tinnitus, vertigo, sinus bradycardia, tachycardia, flushing, hypotension, vomiting, constipation, dry mouth, hyperhidrosis, erectile dysfunction, blood pressure increased (§4.8)
  • Serotonin-related reactions (arrhythmia, hyperthermia, serotonin syndrome) with serotonergic recreational drugs such as ketamine, MDMA and LSD (§4.4)
  • Increased somnolence and dizziness with sedative recreational drugs (narcotics, benzodiazepines); alcohol may enhance neurocardiogenic adverse events such as syncope (§4.4)

Interactions

  • MAO inhibitors - contraindicated (14 days after stopping an MAOI; 7 days after stopping dapoxetine): serious, sometimes fatal reactions with SSRI plus MAOI
  • Thioridazine - contraindicated: dapoxetine inhibits CYP2D6 and is expected to raise thioridazine levels, augmenting QTc prolongation
  • Other SSRIs and serotonergic medicinal/herbal products (SNRIs, TCAs, L-tryptophan, triptans, tramadol, linezolid, lithium, St John's Wort) - contraindicated
  • Potent CYP3A4 inhibitors (e.g. ketoconazole, itraconazole, ritonavir) - contraindicated; moderate CYP3A4 inhibitors - dose restricted to 30 mg with caution
  • Potent CYP2D6 inhibitors / CYP2D6 poor metabolisers - caution if increasing the dose to 60 mg
  • PDE5 inhibitors - dapoxetine should not be used in men with erectile dysfunction who are using PDE5 inhibitors
  • Medicinal products with vasodilatation properties (alpha adrenergic receptor antagonists, nitrates) - prescribe with caution (possible reduced orthostatic tolerance)
  • Alcohol and recreational drugs - advise patients not to combine them with dapoxetine
  • CNS active medicinal products (antiepileptics, antidepressants, antipsychotics, anxiolytics, sedative hypnotics) - not systematically evaluated; caution advised
  • The remainder of §4.5 (pharmacokinetic interactions) was cut off in the retrieved text - verify against the full SPC

Monitoring

  • Orthostatic test before starting (blood pressure and pulse rate, supine and standing) and history of orthostatic events; avoid treatment if orthostatic reaction documented or suspected (§4.4)
  • Benefit-risk appraisal after the first four weeks (or at least after 6 doses), then re-evaluate at least every six months (§4.2)
  • Prodromal symptoms of syncope and orthostatic reactions, especially before any escalation to 60 mg (§4.2, §4.4)
  • Counsel on adequate hydration and on lying down or sitting with head between knees if prodromal symptoms occur (§4.4)

Clinical monograph

How it works

By inhibiting presynaptic serotonin reuptake it enhances serotonergic neurotransmission in the pathways controlling the ejaculatory reflex, thereby delaying ejaculation.

Prescribing in practice

  • It can cause orthostatic hypotension and syncope, so it is contraindicated in significant cardiac disease and patients should be counselled to recognise prodromal symptoms.
  • It is taken only on demand a few hours before anticipated sexual activity rather than continuously.
  • Avoid co-administration with monoamine oxidase inhibitors and other serotonergic drugs because of the risk of serotonin syndrome.

Monitoring

No routine laboratory monitoring is required, but assess cardiovascular status and orthostatic tolerance before and during treatment.

Counselling the patient

  • Take a single dose only when sexual activity is anticipated, not every day.
  • If you feel faint, lie down with your legs raised and avoid situations where fainting could cause injury.
  • Do not combine with recreational drugs or alcohol, which can worsen dizziness.

Evidence & guidelines

Randomised controlled trials demonstrate that dapoxetine increases intravaginal ejaculatory latency time compared with placebo in premature ejaculation.

Reference: BAUS / EAU PE guidelines; SmPC; Confirm identity and dosing against the manufacturer SPC (eMC) and NICE. Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.