Diagnostic Flowchart for Selecting the Optimal Medication for Pain and Fever Symptoms
Start
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Q1 Can you take oral medication?
If 【NO】
Vomiting / Infant / Difficulty swallowing
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Result 【Suppository】recommended
Fast-acting medication when unable to take orally - effective in 15 minutes
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If 【YES】
Able to take oral medication
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Q2 Is the patient under 15 years old?
If 【YES】
Child under 15 years old
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Result 【Acetaminophen】or 【Suppository】recommended
Safest option for children
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If 【NO】
15 years or older
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Q3 Does any of the following apply?
If 【YES】
Any of the above applies
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Result 【Acetaminophen】recommended
Safest with fewest side effects
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If 【NO】
None of the above apply
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Q4 How severe is the pain?
If 【Mild to Moderate】
Tolerable level of pain
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Result 【Acetaminophen】recommended
Mild effect is sufficient
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If 【Severe Pain】
Quite intense pain
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Q5 Is there inflammation or swelling?
(Joint pain / Muscle pain / Sprain / Menstrual cramps)
If 【YES】
Inflammation or swelling present
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Result 【Ibuprofen】recommended
Strong anti-inflammatory effect
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If 【NO / Unsure】
No inflammation or swelling, or unsure
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Q6 Does any of the following apply?
If 【YES】
Any of the above applies
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Result 【Acetaminophen】recommended
Gentle on stomach and safe
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If 【NO】
None of the above apply
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Q7 Have other pain medications been insufficient?
If 【YES】
Over-the-counter pain medications didn't work
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Caution 【Pyrazolone derivatives】recommended
※Consult a pharmacist if using for the first time
※Risk of allergic reactions
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If 【NO】
First time using, or haven't tried other medications
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Result 【Ibuprofen】recommended
Powerful and fast-acting
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Special Cases: If applicable 【Aspirin】recommended
※Must consult a physician
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If considering non-medication care: If applicable View 【Other】category
Tongue cleaner / Hot/cold pads / Check lock, etc.
Important Precautions

Analgesic Antipyretic Anti-inflammatory Drugs Category Comparison Table

Category Recommended For Main Features Precautions
Acetaminophen
Gentle on stomach and safe
  • ✓ Minimal stomach burden
  • ✓ Few side effects
  • ✓ OK on empty stomach
  • ✓ Most widely used worldwide
  • ✓ For fever, headache, menstrual cramps
  • ⚠️ Effect is mild
  • ⚠️ Do not combine with alcohol
  • ⚠️ Caution for those with liver disease
Ibuprofen
Powerful and fast-acting
  • ✓ Pain relief, fever reduction, anti-inflammatory
  • ✓ Stronger than acetaminophen
  • ✓ Fast-acting (15-30 minutes)
  • ✓ Long-lasting effect (4-6 hours)
  • ✓ Particularly effective for inflammation
  • ⚠️ Avoid on empty stomach
  • ⚠️ Consult physician for long-term use
  • ⚠️ Caution for those with asthma
  • ⚠️ Check product for use under 15 years
Aspirin
Historic all-purpose medication
  • ✓ Fever reduction and pain relief
  • ✓ Anti-inflammatory action
  • ✓ Blood clotting inhibition
  • ✓ Heart attack and stroke prevention
  • ✓ Over 100 years of proven use
  • ⚠️ High stomach burden
  • ⚠️ Increases bleeding tendency
  • ⚠️ Generally prohibited under 15 years
  • ⚠️ Avoid in late pregnancy
  • ⚠️ Must stop before surgery
Pyrazolone derivatives
Strongest pain relief effect
  • ✓ Strongest pain relief effect
  • ✓ Very fast-acting
  • ✓ Multi-angled action with compound ingredients
  • ✓ Long-term use in Japan
  • ⚠️⚠️ High allergic reaction risk
  • ⚠️ Use with caution if first time
  • ⚠️ Stop immediately if side effects occur
  • ⚠️ Must consult pharmacist
  • ⚠️ Not common overseas
Suppository
Fast-acting when unable to take orally
  • ✓ Faster than oral medication (15 minutes)
  • ✓ Zero gastrointestinal burden
  • ✓ Can use when nauseous
  • ✓ Rich pediatric formulations
  • ✓ Can administer reliably
  • ⚠️ Must understand usage method
  • ⚠️ Avoid with rectal abnormalities
  • ⚠️ Less effective during diarrhea
  • ⚠️ Difficult to use away from home
  • ⚠️ Requires cold storage
Other
Complementary care items
  • ✓ Non-medication care
  • ✓ Preventive and complementary use
  • ✓ Little worry about side effects
  • ✓ Can use daily
  • ✓ Diverse products
Examples: Check lock/Tongue cleaner/Hot-cold pads/Compress/Supporter, etc.
  • ⚠️ Limited immediate effectiveness
  • ⚠️ Combine with medication for severe cases
  • ⚠️ Usage varies by product
⚠️ Important Precautions