Drug Comparison
Tylenol vs Ibuprofen: Which Pain Reliever Should You Use?
Two of the most common OTC medications — but they work differently, carry different risks, and aren't interchangeable in every situation.
Side by Side
Quick Comparison
| Property | Tylenol (Acetaminophen) | Ibuprofen (Advil / Motrin) |
|---|---|---|
| Drug class | Analgesic, Antipyretic | NSAID (Non-steroidal anti-inflammatory) |
| Mechanism | Likely central COX inhibition + endocannabinoid system modulation — exact mechanism not fully understood | Nonselective COX-1 and COX-2 inhibition → reduces prostaglandin synthesis |
| Anti-inflammatory? | No | Yes |
| Pain relief | Yes | Yes |
| Fever relief | Yes | Yes |
| OTC strengths | 325 mg · 500 mg tablets | 200 mg tablets |
| GI risk | Low — stomach-safe | Higher — ulcer, bleeding risk |
| Liver risk | Yes — overdose / alcohol risk | Low |
| Kidney risk | Low | Yes — prolonged use / dehydration |
| Cardiovascular risk | Low | Elevated with prolonged use |
| Safe in pregnancy | Generally yes | Not in late pregnancy |
| Platelet effects | None | Inhibits platelets (antiplatelet effect) |
| With blood thinners | Generally safer | Increased bleeding risk |
Clinical guidance
When to Use Each
- You have a sensitive stomach or history of GI problems
- You're pregnant (especially first and second trimester)
- You're taking blood thinners (warfarin, etc.)
- You need fever reduction in children
- You have mild headache or general pain
- You're elderly or have kidney concerns
- You need anti-inflammatory action (arthritis, sprains)
- You have menstrual cramps
- You have dental pain or post-procedure soreness
- You have muscle soreness from overuse or injury
- Acetaminophen hasn't been effective for the pain
Using both
Can You Take Them Together?
Different mechanisms — no direct interaction
Because acetaminophen and ibuprofen act through distinct pathways, they can be taken together or alternated without a direct drug-drug interaction. Alternating the two is a common clinical strategy for sustained fever or pain management. Always follow package directions for each, and consult your healthcare provider about what approach is appropriate for your specific situation.
Risk profile
Organ-Specific Risks
Acetaminophen is metabolized in the liver. Exceeding recommended amounts, or combining it with alcohol, can saturate the liver's detoxification pathway and cause serious hepatotoxicity — even liver failure. It's the leading cause of acute liver failure in the U.S. Ibuprofen does not pose a comparable liver risk at OTC amounts.
Ibuprofen reduces prostaglandins that maintain kidney blood flow. Prolonged use, dehydration, or pre-existing kidney disease raises the risk of acute kidney injury. Elderly patients and those with cardiovascular disease are at higher risk. Acetaminophen is generally kidney-safe at recommended amounts.
Pill identification
Common Imprints
Frequently asked
Common Questions
Explore more