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Dapoxetine in Japan: Premature Ejaculation Treatment and Safety Checks
This guide to Dapoxetine in Japan covers Japanese approval status, premature ejaculation treatment and interactions. It separates medicine-specific information from the product and prescription checks needed for an individual consultation.
This page explains how Dapoxetine works, its directions, limitations and safety. For prices and individual prescriptions, see SWIFT’s relevant care information.
Dapoxetine is used for premature ejaculation in some countries and is unapproved in Japan. It is not an ED medicine. Pay attention to fainting, orthostatic hypotension and combinations with antidepressants and other medicines; distinguish clinic services from overseas product information.
Medical reviewer: Masashi Morita, MD
Dapoxetine is used for premature ejaculation in some countries and is unapproved in Japan. It is not an ED medicine. Pay attention to fainting, orthostatic hypotension and combinations with antidepressants and other medicines; distinguish clinic services from overseas product information.
- Ingredient/class
- Dapoxetine
- Eligible patients/indications
- HPRA’s Priligy information targets premature ejaculation in eligible men aged 18–64. Do not self-diagnose simply because intercourse feels short; assess concerns, perceived control, other diseases and medicines during consultation. Overseas eligibility does not establish Japanese approval.
- Assessing effects
- Assess effects and side effects from the first dose. HPRA advises benefit-risk assessment after 4 weeks or at least 6 doses. Check overseas assessment conditions separately from the clinic’s care policy.
- Clinic care
- Service information supported by public sources is identified in the article. Final prescribing decisions are made during consultation.
What the medicine is
As a short-acting SSRI, it affects serotonin involved in ejaculation. Its action differs from erection-supporting PDE5 inhibitors. It cannot be described as a premature-ejaculation medicine approved in Japan.
Eligible patients and approved indications
HPRA’s Priligy information targets premature ejaculation in eligible men aged 18–64. Do not self-diagnose simply because intercourse feels short; assess concerns, perceived control, other diseases and medicines during consultation. Overseas eligibility does not establish Japanese approval.
Source: Medicine-specific primary documentation. The product used by the clinic is not assumed to be identical to the formulation in this documentation.
Treatment limitations and when diagnosis is needed
Time to ejaculation and satisfaction vary between individuals; a multiple of benefit cannot be guaranteed for everyone. Do not repurpose it for ED, reduced libido or depression. Psychological or relationship factors and other diseases are assessed when necessary.
Formulations and basic directions
HPRA’s Priligy information usually gives 30 mg with ample water 1–3 hours before intercourse, no more than once within 24 hours. It is not a daily maintenance medicine and is not started at 60 mg. This does not establish that SWIFT’s Poxet is the same product; confirm actual strength and dose with the clinic.
Source: Medicine-specific primary documentation. The product used by the clinic is not assumed to be identical to the formulation in this documentation.
Timing of response and decisions about continuation
Assess effects and side effects from the first dose. HPRA advises benefit-risk assessment after 4 weeks or at least 6 doses. Check overseas assessment conditions separately from the clinic’s care policy.
Side effects and symptoms to watch for
Besides nausea, headache, dizziness and diarrhea, fainting and orthostatic hypotension are important concerns. Avoid alcohol because it may increase neurocognitive effects and fainting risk.
Source: Medicine-specific primary documentation. The product used by the clinic is not assumed to be identical to the formulation in this documentation.
When to stop and seek medical attention
For dizziness, lightheadedness or cold sweats, take a safe position, avoid driving or work at height and seek advice. Fainting, severe palpitations, or fever with tremor or confusion requires medical attention.
Restrictions and interactions
Conditions prohibit combinations with MAO inhibitors, other SSRIs/SNRIs or antidepressants, serotonergic medicines or herbs, and strong CYP3A4 inhibitors. Check heart disease, fainting history, mania and liver disease. HPRA explicitly advises avoiding use in PDE5-inhibitor users; do not combine ED medicines yourself.
Source: Medicine-specific primary documentation. The product used by the clinic is not assumed to be identical to the formulation in this documentation.
Pregnancy, breastfeeding and patient precautions
The target is premature-ejaculation treatment in adult men. Do not give it to women or children.
Additional care
Avoid alcohol and watch health status and lightheadedness before and after dosing. Do not stop an antidepressant yourself and switch to this medicine; consult your treating doctor.
Storage and quality checks
Check storage instructions and expiry on the actual clinic product. Do not automatically apply Priligy instructions to Poxet packaging conditions.
Differences from other medicines and treatments
Sildenafil and tadalafil treat ED, while dapoxetine concerns premature ejaculation. Coexistence does not justify a casual instruction to take them as a set. HPRA’s Priligy information advises against use with PDE5 inhibitors; ask the prescriber about combinations.
Discussing consultation and prescribing with SWIFT
SWIFT’s official ED and premature-ejaculation page displays Poxet at JPY 1,500 per tablet. It describes the product as unapproved in Japan, personally imported by a doctor and outside the adverse-reaction relief system. HPRA’s Priligy information advises against use with PDE5 inhibitors; this article does not recommend the combination. Ask the doctor during consultation about the product strength and combinations.
Frequently asked questions
For Dapoxetine, is it approved in Japan?
Dapoxetine is unapproved in Japan. Distinguish this from overseas approval.
For Dapoxetine, can I take it with ED medicines?
Do not combine it yourself. HPRA advises avoiding use in people taking PDE5 inhibitors. Ask the prescriber about combinations.
For Dapoxetine, can I use it while taking antidepressants?
Some medicines cannot be combined. Do not stop antidepressants yourself; consult the prescriber.
Medical supervision
Dr Masashi Morita (Board-certified specialist and supervising physician, Japanese Urological Association / Board-certified specialist, Japan Endocrine Society / Doctor of Medical Science).