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What is Tylenol (Paracetamol)?
Tylenol is 500mg paracetamol from Johnson & Johnson, used to relieve headaches, toothaches, muscle and back pain, and fever in adults and children aged 12 and up. It works by inhibiting prostaglandins to reduce pain perception without irritating the stomach. Take 1-2 tablets every 4-6 hours as needed, with or without food. Available in 10-tablet strips or 20-strip boxes.
🛒 10 tablets/strip or 20 strips/box · authentic · 24-hour dispatch from Intimo Life
Product Description
Analgesic-antipyretic Tylenol is paracetamol 500mg from Johnson & Johnson, a globally trusted pharmaceutical company and one of the most widely used pain relievers and fever reducers in Thailand. Indicated for headache, toothache, muscle pain, back pain, and fever reduction in adults and children aged 12 and above. The active ingredient Paracetamol works by inhibiting Prostaglandin synthesis in the central nervous system, reducing pain perception and fever without irritating the stomach lining — an advantage over NSAIDs.
📊 Paracetamol is the most widely used analgesic-antipyretic in the world — WHO has included it in the Essential Medicines List since 1977
📊 Onset of fever reduction and pain relief within 30-60 minutes of ingestion, with duration of 4-6 hours per dose
📊 StatPearls (NCBI, 2024): ~78% of patients using standard-dose paracetamol reported improvement within 1 hour
🏭 Manufacturer: Johnson & Johnson (Janssen-Cilag), Thai Drug Reg. No. 1A 137/46
⚠️ Do not exceed 4 grams (8 tablets of 500mg) per day — risk of liver damage. Consult a pharmacist.
Medically reviewed by
Intimo Life Content Team | Sources: NHS, NCBI StatPearls, MedlinePlus, WHO
Last reviewed: 2026-06-04
About Tylenol
What is Tylenol?
Tylenol is paracetamol 500mg in caplet form from Johnson & Johnson. Its mechanism of action involves inhibiting prostaglandin synthesis in the central nervous system, reducing pain perception and fever. Unlike NSAIDs (e.g., Ibuprofen), paracetamol has no anti-inflammatory effect and does not irritate the stomach lining.
Tylenol paracetamol 500mg is the standard formulation for adults and children aged 12 and over, used to relieve mild to moderate pain and reduce fever. WHO includes paracetamol in its Essential Medicines List due to its long-established safety and efficacy profile.
What conditions does Tylenol treat?
Tylenol paracetamol 500mg is used to relieve:
Headache / mild migraine — pain relief within 30-60 minutes
Fever reduction — effective for cold, flu, and general infections
Use for fever: maximum 3 days; for pain: maximum 5 days continuously
Tylenol side effects
Tylenol paracetamol is highly safe when used at appropriate doses. Side effects are rare in healthy individuals.
Possible side effects (rare):
Skin rash / hives — stop medication and see a doctor immediately
Mild nausea — usually when taken on empty stomach; take with food to prevent
Dizziness / drowsiness — very rarely reported
⚠️ Warning signs (seek medical attention immediately):
Upper abdominal pain / jaundice (yellow eyes or skin) — possible liver damage
Dark urine — sign of liver dysfunction
Severe allergic reaction: difficulty breathing, facial swelling — emergency
Paracetamol is gentler on the stomach than Ibuprofen — suitable for those with stomach issues.
Contraindications / Precautions for Tylenol paracetamol
Contraindications:
Allergy to Paracetamol or any component of Tylenol
Severe liver disease
Precautions:
Avoid alcohol while taking — significantly increases risk of liver damage
Check other medications for paracetamol content (cold/cough medicines) — avoid double-dosing
Pregnancy / breastfeeding: Generally safe but consult a doctor, especially in the third trimester
Children under 12: Use paediatric paracetamol formulations only
Kidney disease: Risk of drug accumulation; dose adjustment may be needed
Always consult a pharmacist before taking Tylenol paracetamol if you have underlying conditions or are taking other medications.
Tylenol vs other paracetamol analgesics
Paracetamol 500mg analgesics in Thailand come in multiple brands — same active ingredient but differ in brand, tablet shape, and price:
Tylenol (Paracetamol 500mg) — Johnson & Johnson brand, caplet (oblong tablet), easy to swallow, mid-range price
Sara (Paracetamol 500mg) — Berlin Pharmaceutical brand, round white tablet, budget price
Summary: Both Tylenol and Sara contain identical 500mg paracetamol with the same efficacy. Choose based on brand preference, price, or tablet shape that is easiest to swallow — Tylenol is a caplet (J&J), Sara is a round tablet (Berlin).
Can Tylenol be taken with other medications?
Tylenol paracetamol has notable drug interactions to be aware of:
Anticonvulsants (Carbamazepine, Phenytoin, Phenobarbital) — may reduce efficacy and increase liver risk
Other paracetamol-containing products (e.g., cold medicines) — do not use simultaneously; risk of overdose
Alcohol — even moderate amounts significantly increase risk of liver damage
Tylenol paracetamol generally has few interactions with most medications, but always inform your pharmacist of all medications you are taking.
How quickly does Tylenol work?
Tylenol paracetamol immediate-release tablets have the following onset profile:
Onset: 30-60 minutes after ingestion
Peak effect: 1-2 hours after ingestion
Duration: 4-6 hours per dose
Factors that may slow absorption:
Taking with a heavy meal (slows absorption but does not reduce efficacy)
Low fluid intake
Co-administration with some antacids
Tip: Take Tylenol paracetamol with plenty of water on an empty stomach or after a light snack for fastest onset.
Where to buy Tylenol?
Where to buy Tylenol (Paracetamol)?
Order Tylenol paracetamol analgesic online at Intimo Life — delivery across Thailand in 1-3 business days, discreet packaging with no product name on the parcel.
⚠️ Disclaimer
The content in this article is for general educational purposes only. It is not intended to replace professional advice, diagnosis, or treatment from a doctor or pharmacist. If you have any questions about symptoms or medication use, always consult a doctor or pharmacist first.
Adults and adolescents aged 12+ take 1-2 Tylenol 500mg tablets every 4-6 hours. Do not exceed 8 tablets (4,000mg) per day. Minimum 4 hours between doses. Elderly or those under 50 kg should start with 1 tablet (500mg) per dose for safety. Exceeding the recommended dose can cause serious liver damage.
Yes. Tylenol paracetamol does not irritate the stomach lining, so it can be taken on an empty stomach. However, taking it with a small snack may improve comfort for those with sensitive stomachs. Always drink plenty of water.
Take Tylenol paracetamol every 4-6 hours as needed only. Never take more frequently than every 4 hours, and do not exceed 8 tablets in 24 hours. Do not take preventively before symptoms appear. For fever, use no longer than 3 consecutive days; for pain, no longer than 5 days. If fever persists or pain does not improve, consult a doctor immediately.
Both Tylenol and Sara contain 500mg paracetamol and have identical efficacy. The difference is brand and tablet shape — Tylenol is a caplet (Johnson & Johnson) / Sara is a round tablet (Berlin Pharmaceutical). Choose based on the shape easiest to swallow and preferred price.
Yes, very dangerous. Taking more than 4,000mg paracetamol per day (or less in those who drink regularly or have liver disease) can cause permanent liver damage and may be fatal. If overdose is suspected, go to an emergency room immediately — do not wait for symptoms to appear.
Paracetamol is generally considered relatively safe during pregnancy when used at the lowest effective dose for the shortest time. However, some studies suggest potential risks to fetal development (FDA issued additional warnings in 2025). Always consult a doctor before use and do not take continuously without medical supervision.
Not recommended. Tylenol 500mg is an adult formulation for ages 12 and above. Children younger than 12 should use paediatric paracetamol formulations specifically dosed by body weight. Always consult a pharmacist or paediatrician.
Absolutely not. Both alcohol and paracetamol are metabolised by the liver. Combining them significantly increases the risk of liver damage, especially for regular drinkers. Avoid alcohol entirely while taking Tylenol paracetamol.
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