Health & Body
Timing answers for your health, from everyday illnesses to recovery milestones. Find out how long colds, flu, and infections really last, when common medications like antibiotics or antidepressants start working, how long substances stay detectable in your system, and what realistic recovery timelines look like after surgery or injury. Every answer leads with the typical range, explains the factors that stretch or shorten it — age, severity, treatment, overall health — and flags the warning signs that mean it's time to see a doctor. Ranges reflect published guidance from sources like the CDC, Mayo Clinic, and Cleveland Clinic, not worst-case anecdotes.
How Long Does Food Poisoning Last?
1–3 days for most cases. Symptoms usually start 6–24 hours after eating contaminated food. Severe cases (Salmonella, E. coli) can last 5–7 days or longer.
How Long Does It Take for a Bone Bruise to Heal?
A bone bruise typically takes 2–4 months to heal, though severe bruises near joint surfaces can take up to 12 months for full resolution on MRI.
How Long Does It Take for Blood Test Results to Come Back?
1–3 business days for standard panels (CBC, metabolic). Specialized tests (thyroid, STI, genetic) take 3–14 days. Emergency/stat results are available within hours.
How Long Does It Take for Ibuprofen to Work?
20–30 minutes for pain relief. Peak effect at 1–2 hours; lasts 4–6 hours per dose.
How Long Does It Take for Probiotics to Work?
2–4 weeks for most digestive benefits. Some people notice reduced bloating within days, but meaningful gut changes typically take 2–4 weeks of daily use. Immune benefits may take 8–12 weeks.
How Long Does It Take for Tylenol to Work?
Tylenol (acetaminophen) typically starts working within 30–45 minutes for oral tablets, with peak pain relief at about 1 hour.
How Long Does It Take to Get Braces?
1–2 hours for the placement appointment. Full orthodontic treatment takes 1–3 years depending on the severity of misalignment and the type of braces used.
How Long Does It Take to Recover from Wisdom Teeth Removal?
Most people recover from wisdom teeth removal in 3–5 days for initial healing, with full recovery of the surgical site taking 2–4 weeks.
How Long Does Mono Last?
2–4 weeks for most symptoms. Fatigue can linger for several months.
How Long Does Muscle Soreness Last?
24–72 hours for delayed onset muscle soreness (DOMS), peaking around 48 hours after exercise. Soreness lasting beyond 5 days or accompanied by sharp pain may indicate injury.
How Long Does Poison Ivy Last?
A poison ivy rash typically lasts 1–3 weeks, with mild cases clearing in 7–10 days and severe reactions taking up to 3–4 weeks to fully resolve.
How Long Does Shingles Last?
3–5 weeks from rash onset to scab healing. Pain may persist for months (postherpetic neuralgia).
How Long Does Strep Throat Last?
3–7 days with antibiotics. Without treatment, symptoms can last 7–10 days with higher complication risk. Most people feel better within 24–48 hours of starting antibiotics.
How Long Does a Steroid Shot Take to Work?
1–3 days for initial pain relief, with full effect in 1–2 weeks. Results typically last 6 weeks to 6 months.
How Long Does It Take for a Bee Sting to Stop Hurting?
Sharp bee sting pain typically subsides within 1–2 hours. Swelling, redness, and mild soreness may persist for 2–5 days before fully resolving in most people.
How Long Does It Take for a Tooth Extraction to Heal?
Soft tissue heals in 1–2 weeks after a tooth extraction. Complete bone and gum remodeling takes 3–6 months.
How Long Does It Take to Recover from a Concussion?
7–10 days for most adults with a mild concussion. Moderate to severe concussions may take weeks to months, and children often need longer recovery time.
How Long Does a Cortisone Shot Take to Work?
2–7 days for full effect, though some people notice improvement within 24–48 hours. Pain relief from a cortisone shot typically lasts 6 weeks to several months.
How Long Does an Allergic Reaction Last?
1–2 hours for mild reactions, 1–3 days for moderate reactions, and minutes for severe anaphylaxis without treatment. Duration depends on the allergen type and whether you take antihistamines.
How Long Does a Sore Throat Last?
A viral sore throat typically lasts 5–7 days and resolves on its own, while a bacterial sore throat (strep) improves within 24–48 hours of starting antibiotics.