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 Botox Last?
3–4 months on average. Results begin appearing within 3–5 days and reach full effect at 2 weeks.
How Long Does COVID Last?
5–10 days for most people with mild to moderate symptoms. Severe cases may take 2–6 weeks. Some people develop long COVID with symptoms lasting months.
How Long Does It Take for a Hemorrhoid to Go Away?
Mild hemorrhoids typically resolve within 7–14 days with home treatment. Thrombosed hemorrhoids take 2–4 weeks, while severe cases treated surgically require 2–6 weeks for full recovery.
How Long Does It Take to Lower Your A1C?
It takes about 2–3 months to meaningfully lower your A1C, because the test reflects your average blood sugar over the prior 2–3 months. Consistent changes show up fully at the next test, typically 3 months later.
How Long Does It Take to Recover from Rhinoplasty?
Initial rhinoplasty recovery takes about 1–2 weeks for swelling and bruising to fade enough to return to normal activities, but full healing and final results can take 12–18 months as subtle swelling resolves.
How Long Does Melatonin Last?
4–8 hours depending on formulation. Regular-release melatonin peaks within 30–60 minutes and lasts 4–5 hours. Extended-release formulations provide effects for 6–8 hours.
How Long Does Zofran Take to Work?
Zofran (ondansetron) usually starts working within 30 minutes to 2 hours. IV doses act fastest (within minutes), oral tablets take about 30–60 minutes, and dissolving tablets work in roughly the same window.
How Long Do Mushrooms Stay in Your System?
1–90 days, depending on the test. Psilocybin from magic mushrooms clears blood and saliva within about 24 hours and urine within 1–3 days, but hair tests can detect use for up to 90 days.
How Long Does an Endoscopy Take?
The scope procedure itself takes 15–30 minutes, but plan on 2–3 hours total at the facility for check-in, sedation, and recovery. An upper endoscopy is often quicker than a colonoscopy.
How Long Does an MRI Take?
15–90 minutes depending on the body part scanned. A brain MRI takes 20–45 minutes; a knee MRI takes 15–30 minutes.
How Long Does a Stye Last?
7–14 days for most styes. Most resolve on their own within 1–2 weeks with warm compress treatment. A chalazion can take 2–8 weeks to clear.
How Long Does It Take for a Herniated Disc to Heal?
Most herniated discs improve significantly within 6–12 weeks with conservative treatment, though complete healing can take 3–6 months or longer depending on severity and location.
How Long Does Lyrica Take to Work?
Some relief may begin within the first week, but Lyrica (pregabalin) usually takes 1–4 weeks to reach its full effect for nerve pain, fibromyalgia, or seizures as the dose is gradually increased.
How Long Does a Fever Last?
2–3 days for most viral infections. Bacterial fevers may persist 5–7 days without antibiotics. Seek medical attention if fever exceeds 103°F or lasts more than 3 days.
How Long Does a Sinus Infection Last?
7–10 days for a viral sinus infection, or 10–14 days for a bacterial sinus infection. Chronic sinusitis can persist for 12 weeks or longer without treatment.
How Long Does Bronchitis Last?
7–10 days for most symptoms, but the cough can linger 2–8 weeks.
How Long Does Caffeine Stay in Your System?
5–6 hours for the half-life; about 10–12 hours to fully clear your system.
How Long Does It Take for a Stye to Go Away?
Most styes resolve on their own within 7–14 days with warm compress treatment. Some styes drain within 2–4 days, while persistent ones may take 4–6 weeks or require medical drainage.
How Long Does It Take for Braces to Work?
1–3 years for most patients, with an average treatment time of about 22 months. Minor cases may finish in as little as 6 months.
How Long Does It Take for Melatonin to Work?
Melatonin typically takes 30–60 minutes to kick in, so most sleep experts recommend taking it 30 minutes to 1 hour before bedtime.