Tylenol vs Advil
Acetaminophen vs ibuprofen — for headache, fever, back pain, muscle pain, and safety.
OTC Medicine Comparisons: Active Ingredients & What Works
Most OTC medicines come in five or six brand names with basically three active ingredients between them. We break down what's actually in each one, what works best for what symptom, and when it's time to see a doctor instead.
Pain & Fever
Advil PM vs Tylenol PM
Sleep aid + pain reliever comparisons — diphenhydramine dose matters.
Allergies & Antihistamines
Benadryl vs Zyrtec
First vs second-generation antihistamines — drowsiness, duration, and daily use.
Heartburn & Acid Reducers
Prilosec vs Nexium
Omeprazole vs esomeprazole — efficacy, price, and when each is worth it.
Pepto-Bismol vs Tums
Bismuth subsalicylate vs calcium carbonate — different problems, different pills.
Acid Reflux Remedies Guide
H2 blockers, PPIs, antacids, and lifestyle fixes ranked.
Cough & Cold
Mucinex vs Robitussin
Guaifenesin vs dextromethorphan — which works for productive vs dry cough.
Delsym vs Mucinex
12-hour cough suppression vs mucus thinning — when to use each.
Constipation & Digestive
Miralax vs Metamucil
PEG 3350 vs psyllium — mechanism, speed, and daily-use safety.
Metamucil vs Benefiber
Psyllium vs wheat dextrin — which fiber is right for your gut.
Dulcolax vs Miralax
Stimulant vs osmotic laxative — when each is appropriate.
Frequently Asked Questions
Is Tylenol or Advil better for back pain?
Advil (ibuprofen) is typically more effective for back pain because most back pain involves inflammation, and ibuprofen is an anti-inflammatory. Tylenol (acetaminophen) reduces pain perception but has no anti-inflammatory effect. However, Tylenol is safer for people with kidney issues, ulcers, or who take blood thinners. Our full Tylenol vs Advil comparison covers specific conditions.
Zyrtec, Claritin, or Allegra — which is best for allergies?
All three are second-generation antihistamines (non-drowsy for most users). Zyrtec (cetirizine) is the strongest but causes mild drowsiness in 10-15% of users. Allegra (fexofenadine) is the least drowsy but wears off faster. Claritin (loratadine) is the mildest but has the lowest side-effect rate. For a first try, pick Zyrtec. If it makes you tired, switch to Allegra. See our antihistamine comparison.
Is Prilosec safe to take daily?
Short-term (2-4 weeks) daily use is generally safe. Long-term daily PPI use (months to years) is associated with increased risk of kidney issues, bone density loss, B12 deficiency, and C. difficile infection. If you need daily acid suppression for more than 8 weeks, talk to your doctor about whether you should continue. See our PPI comparison.
What's the difference between a cough suppressant and an expectorant?
A cough suppressant (like dextromethorphan in Robitussin DM, Delsym) blocks the cough reflex — use for dry, unproductive coughs that interfere with sleep. An expectorant (guaifenesin in Mucinex) thins mucus so you can cough it up more easily — use for productive coughs with chest congestion. They do opposite things. See our cough medicine comparison.
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