Erectile dysfunction (ED) is the inability to achieve or maintain an erection sufficient for sexual intercourse. If a person has never had an erection or has never been able to sustain an erection, it is called “primary ED”; if a person has previously been able to have an erection but now has erectile dysfunction, it is called “secondary ED ” when a person who was previously able to have an erection becomes unable to sustain it.
Erections usually occur when sexual desire is high. Sexual stimulation causes the nerves involved in erection to secrete a special substance that sends a signal to the tissue involved in erection, the corpus cavernosum penis. This causes a large amount of blood to flow into the corpus cavernosum, and an erection is said to occur due to the pooling of blood.
This is why erectile dysfunction is thought to be caused mainly by blood vessels, nerves, or psychological factors. Specifically, in addition to aging, there are physical causes such as diabetes, hypertension, nerve or blood vessel damage due to trauma or surgery, and psychological causes such as stress.
Many people believe that age and psychological factors are involved in erectile dysfunction. While it certainly tends to increase with age, it can also occur in younger age groups and is considered a disease that can occur at any age. It is also said that in people in their 50s and older, it is often related to arteriosclerosis (a condition in which blood vessels become hardened and narrowed, resulting in poor blood flow).
Thus, there are many causes of erectile dysfunction, and it is not simply due to aging. Since it is sometimes related to disease, it is important to consider seeing a doctor as soon as possible if you have symptoms that concern you, rather than leaving them untreated. Treatment may help you lead a better everyday life.
Erectile dysfunction may cause the following symptoms
Inability to get an erection at all
Erection is possible, but not long enough for intercourse
You should think about seeing a doctor if you are worried about your ability to get an erection, but also if you have trouble getting an erection sometimes, or if you are not happy with your erection, because these situations can also be treated.
In the past, urology was the main specialty that treated erectile dysfunction. However, as more cases are related to lifestyle factors, internal medicine has become more common for treatment. You may still see a urologist, but you may also start with your family doctor in internal medicine.
Erectile dysfunction is often treated with PDE5 inhibitors, which are drugs that widen the blood vessels in the penis and increase blood flow to help and maintain an erection. They also prevent the worsening of penile vascular damage, so they may help stop erectile dysfunction from getting worse.
Take one pill about one hour before sexual activity. You should wait 24 to 48 hours (depending on the type of medication) before taking another dose. If the medication does not work well enough, the doctor may find out the cause of your erectile dysfunction and provide necessary treatment and counseling by a psychosomatic specialist.
We provide Viagra in 25mg and 50mg dosages, as well as Cialis (Tadalafil) in 10mg and 20mg dosages.
Classic ED drug
Takes effect 30 minutes after oral administration, reaches maximum effect in 1-2 hours, and lasts for 4 hours
Should be taken on an empty stomach, as its effectiveness is reduced if taken after a meal.
Tadalafil, also known as Cialis, has the highest market share in ED treatment
Takes effect 30-60 minutes after ingestion, with maximum effect in 3 hours, and lasts for 24 hours (10 mg) or 36 hours (20 mg)
Not affected by food
Headache and hot flashes are the least common side effects
May cause heartburn and back pain.
Under 20 years of age
Severe liver function abnormality
Severe renal function abnormality
Hypotension/hypertension (blood pressure <90/50 mmHg or >170/100 mmHg is not acceptable)
Previous myocardial infarction within the past 6 months
Previous cerebral infarction or hemorrhage within the past 6 months
Currently using nitrates, amiodarone, or glaucoma eye drops
Viagra OD film (25 mg）: 3,300 yen (tax included)
Viagra OD film (50 mg）: 4,400 yen (tax included)
Tadalafil (10 mg）: 3,300 yen (tax included)
Tadalafil (20 mg）: 4,400 yen (tax included)
※Shipping costs are not included.The standard shipping fee is 660 yen.
【1 minute walk from Shinjuku Sanchome Exit C5】
Director speaks English and Chinese. Available on Saturdays, Sundays, and national holidays. Open until 20:00 on weekdays. 24-hour web reservations available.Internal medicine, nephrology, allergology, urology.
Address: Shinjuku Dori Toyo Bldg. 3F, 2-6-4 Shinjuku, Shinjuku-ku, Tokyo 160-0022, Japan
・1 minute walk from Shinjuku Sanchome Station (Exit C5) on Tokyo Metro Marunouchi Line, Tokyo Metro Fukutoshin Line and Toei Subway Shinjuku Line
・7 minutes walk from Southeast Exit of JR Shinjuku Station
・5-minute walk from Shinjuku-Gyoenmae Station (Exit 2) on Tokyo Metro Marunouchi Line
If you have any questions, please don’t hesitate to let me know.
Hoichi Amano (M.D.,PhD)
・Administrator of eHealth clinic
・Visiting lecturer (School of Public Health,Teikyo University)
・Locum Doctor (Teikyo University Chiba Medical Center)
・Occupational health physician for several companies
2018 – 2021 Doctorate in Public Health, Teikyo University Graduate School of Public Health, Tokyo, Japan
2016-2018 Master’s Degree in Public Health, Teikyo University Graduate School of Public Health, Tokyo, Japan
2004-2010 M.D., Saitama Medical University, Faculty of Medicine, Saitama, Japan
Board Certified Member of the Japanese Society of Internal Medicine
Board Certified Nephrologist of the Japanese Society of Nephrology
Board Certified Member of the Japanese Society of Anti-Aging Medicine
Occupational Medicine Physician
Master of Public health
Doctor of Public health
Please select the “For Chinese & English speakers.” page from the URL below and make an appointment before coming to our clinic.
If you have any questions or concerns, please feel free to contact us here.（We will respond during business hours.）