How to Take Ciprofloxacin: Side Effects, Dosage
Learn how to take ciprofloxacin as directed — dosing guidelines, common side effects, precautions, and when to consult your doctor.
Not medical advice. Speak with a healthcare professional before using any medication.
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Updated Feb, 15
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Information sourced from FDA-approved prescribing information and peer-reviewed medical references.
How to Take Ciprofloxacin
How to Take Ciprofloxacin
The following information reflects FDA-approved prescribing information for Ciprofloxacin. Always follow your prescriber's specific instructions:
- Per FDA-approved prescribing information, typical adult dose: Most infections are treated with 250–500 mg every 12 hours. More serious infections may use 750 mg every 12 hours. Your prescription lists your exact dose — follow that.
- Per FDA-approved prescribing information, timing: Take it at the same times each day, about 12 hours apart, to maintain consistent drug levels.
- With or without food: You can take it on an empty stomach or with a light meal. If it upsets your stomach, a small meal is fine.
- Swallow tablets whole: Do not crush or chew them.
- Drink plenty of water to help your body process the medication.
- Per FDA-approved prescribing information, avoid certain products near your dose: Do not take antacids, calcium supplements, iron, zinc, multivitamins, or dairy-heavy meals within 2 hours before or 2 hours after your ciprofloxacin dose, as they can block absorption.
- Per FDA-approved prescribing information, if you miss a dose: Take it as soon as you remember, unless it is close to the next dose. In that case, skip the missed one — never double up.
- Per FDA-approved prescribing information, finish the full course: Even if you feel better early, complete every dose exactly as prescribed.
- Per FDA-approved prescribing information, for children: Pediatric dosing is individualized by weight. Caregivers should use only the dose written on the child's prescription.
If anything feels unclear, your pharmacist or clinician can review the specific instructions on your prescription label.
Warnings Before Taking Ciprofloxacin
- Per FDA-approved prescribing information, avoid if you've had tendon rupture, tendinitis, or aortic aneurysm risks associated with fluoroquinolone antibiotics.
- Per FDA-approved prescribing information, tell your doctor about heart rhythm problems (QT prolongation) or electrolyte imbalances.
- Per FDA-approved prescribing information, discuss any kidney disease or myasthenia gravis before use.
- Per FDA-approved prescribing information, review all medicines to prevent harmful interactions, including interactions with theophylline, warfarin, and antacids.
- Per FDA-approved prescribing information, avoid if you've had serious hypersensitivity reactions to fluoroquinolones.
- Per FDA-approved prescribing information, ciprofloxacin may cause fetal harm. Discuss pregnancy or breastfeeding with your prescriber before use.
Ciprofloxacin Side Effects
Common
Nausea: mild
Nausea and Stomach Upset
Per FDA-approved prescribing information, ciprofloxacin can cause nausea, mild stomach pain, or decreased appetite. Taking it with a light snack (avoiding dairy near dosing time) may reduce discomfort.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
1–3 hours
Common
Diarrhea: mild
Diarrhea
Per FDA-approved prescribing information, this antibiotic can affect normal gut bacteria and cause loose stools or diarrhea. Persistent or severe diarrhea, or diarrhea containing blood or mucus, requires prompt medical attention as it may indicate Clostridioides difficile infection.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
1–2 days
Common
Mild
Headache
Per FDA-approved prescribing information, some people experience a mild to moderate headache while taking ciprofloxacin.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
1–6 hours
Uncommon
Mild
Difficulty Sleeping
Per FDA-approved prescribing information, ciprofloxacin may cause restlessness or insomnia. Contact your prescriber if this becomes bothersome.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
6–12 hours
Uncommon
Mild
Dizziness
Per FDA-approved prescribing information, some people feel lightheaded or slightly dizzy while taking ciprofloxacin.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
30 minutes–3 hours
Common
Moderate
Sun Sensitivity
Per FDA-approved prescribing information, ciprofloxacin can increase photosensitivity, making the skin more prone to sunburn. Use sunscreen and limit prolonged sun exposure while taking this medication.
Per FDA-approved prescribing information. Contact your prescriber if side effects persist or worsen.
Normally lasts for:
12–24 hours
Contact Us for a Personalized Care Plan
Have questions about compounding? Contact Voshell's Pharmacy — we prepare patient-specific medications pursuant to valid prescriptions from your licensed prescriber.
What If You Forgot to Take Ciprofloxacin
What If You Forgot to Take Ciprofloxacin?
Per FDA-approved prescribing information, if you miss a dose, take it as soon as you remember. If it is already close to your next scheduled dose, skip the missed one and return to your usual timing.
Per FDA-approved prescribing information, avoid doubling doses. Keep doses evenly spaced for consistent antibiotic levels.
- If you miss doses often or are unsure what to do, contact your clinic or pharmacist for guidance.
What If You Took Too Much Ciprofloxacin
What If You Took Too Much Ciprofloxacin?
If more than the prescribed amount was taken, contact Poison Control at 1-800-222-1222 right away. For children or if a large amount was ingested, seek urgent medical care immediately.
Do not take any more doses until you have spoken with Poison Control or a clinician.
- If symptoms such as severe GI distress, seizures, confusion, or unusual heart rhythm changes occur, seek emergency medical care.
Keep this and all medications out of reach of children.
How Much Does Ciprofloxacin Cost
Ciprofloxacin Cost With Insurance
With many U.S. insurance plans, ciprofloxacin is usually placed on a low formulary tier. Almost all plans cover the generic form. Checking your plan's pharmacy benefits or asking the pharmacy to run your insurance can confirm your exact amount.
Prices vary by pharmacy, dose, location, and insurance plan and may have changed since this page was written. Contact your pharmacy or insurance provider for current pricing.
How Much Does Ciprofloxacin Cost without Insurance
Ciprofloxacin Cost without Insurance
Without insurance, ciprofloxacin is generally available at low cost as a generic. Prices vary by pharmacy, quantity, and tablet strength. Using pharmacy discount coupons can often lower the out-of-pocket price.
Prices vary by pharmacy, dose, location, and insurance plan and may have changed since this page was written. Contact your pharmacy or insurance provider for current pricing.
Resources:
https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/ciprofloxacin-drug-safety-communication
https://medlineplus.gov/druginfo/meds/a688016.html
https://www.nhs.uk/medicines/ciprofloxacin
https://www.mayoclinic.org/drugs-supplements/ciprofloxacin-oral-route/description/drg-20072288
