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Influenza Prevention Medication
CONCERNSDo any of these sound familiar?
- Someone in your family or household has caught influenza
- You have been in contact with someone with influenza at work or school
- You are older or have an underlying condition and worry about becoming seriously ill
- You have an exam, important work or a trip coming up
- You want to avoid catching another infection at a medical facility as far as possible
- You would like to consult a doctor online from home
*As a rule, preventive use is approved for household members or people living with a person who has influenza, particularly those at high risk of serious illness. Use for anyone else is off-label and requires the doctor’s individual judgement.
What is preventive use for influenza?
Preventive use means taking an antiviral influenza medicine after contact with someone who has influenza, before any symptoms appear, to reduce the risk of developing the illness.
The medicines used for prevention work by suppressing the multiplication of the influenza virus.
It is important to start within 48 hours of contact with the infected person.
Effectiveness has not been confirmed when preventive use is started more than 48 hours after contact.
Preventive use does not completely prevent infection or illness, and it is not a substitute for the influenza vaccine.
Who is eligible for influenza prevention medication?
According to the package insert, preventive use is intended for household members or people living with a person who has influenza and who fall into any of the following categories:
- People aged 65 or over
- People with chronic respiratory disease
- People with chronic heart disease
- People with metabolic disorders such as diabetes
- People with impaired kidney function
Preventive use for other people, such as healthy adults, is outside the approved scope.
At Shinsatsu Dash, the doctor checks how you were in contact with the infected person and your state of health, and decides whether a prescription is appropriate.
PRICEPricing
Pricing
OseltamivirOral (generic Tamiflu)
- 75 mg, 10 capsules¥5,500
Inavir Dry Powder InhalerInhaled
- 20 mg, 1 kit¥6,600
- 20 mg, 2 kits¥8,800
※Shipping is charged separately at ¥550 (standard delivery, tax included).
※All prices include tax.
※We can prescribe and ship only to addresses within Japan. Consultations are available in English.
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ABOUTUses and Key Points
Influenza prevention medicines we offer
Oseltamivir 75 mg (generic Tamiflu)
Oral medicine | Once daily for 10 days
Oseltamivir is an oral medicine that suppresses the multiplication of influenza A and B viruses.
[Dosage]
For adults, take 75 mg once daily for 10 days.
[Features]
- An oral medicine with no inhaling required
- Effective against influenza A and B
- An option for people who find inhalers difficult to use
- The dose may need adjusting depending on kidney function
[Main side effects]
Nausea, vomiting, abdominal pain, diarrhea, headache, etc.
Inavir (laninamivir) Dry Powder Inhaler 20 mg
Inhaled medicine | Completed in a single session or over 2 days
Inavir is an antiviral influenza medicine that you inhale using a dedicated inhaler.
[Dosage]
For adults, inhale 40 mg once, or inhale 20 mg once daily for 2 days.
For children under 10, inhale 20 mg once.
[Features]
- Effective against influenza A and B
- The preventive course is completed in a single session or over 2 days
- No need to take medicine every day
- An option for people who dislike taking tablets
[Main side effects]
Diarrhea, nausea, dizziness, headache, etc.
*If you have a respiratory condition such as asthma or COPD, or a severe allergy to milk protein, be sure to tell the doctor during your consultation.
Oseltamivir vs. Inavir
| Item | Oseltamivir | Inavir |
|---|---|---|
| Type | Oral | Inhaled |
| Preventive use (adults) | Once daily | Once, or once daily |
| Duration | 10 days | Once, or 2 days |
| Influenza types | A and B | A and B |
| Advantage | No inhaling required | No daily dosing |
| Points to note | Dose adjustment for kidney function | Inhaler technique, respiratory conditions, etc. |
The doctor decides which medicine suits you, taking into account your age, medical conditions, allergy history and other factors.
FLOWFrom adding us on LINE to receiving your medication
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Add us on LINE
Add our official LINE account and message us any time.
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Questionnaire & consultation
A doctor reviews your questionnaire and your message personally.
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Online consultation
You are examined online by a doctor.
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Payment
We accept all major credit cards.
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Dispatch
Dispatched as early as the next day (no dispatch on weekends).
*Delivery may be delayed by stock levels, typhoons or other disasters.
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Delivery
Discreetly packaged and delivered to your letterbox. The label describes the contents only as “お品物” (an item).
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