Medically reviewed by Jessica Swirble, PharmD
Last updated on April 1, 2025
Drug Information | Side Effects | Use & Dosage | Request an Online Prescription
Amoxicillin is a penicillin-based antibiotic prescribed to treat various bacterial infections. It works by inhibiting the growth of bacteria in the body.
Amoxicillin is used to treat conditions such as:
It may also be prescribed for other bacterial infections as determined by your healthcare provider.
Amoxicillin works by interfering with bacteria's ability to form cell walls, leading to their death.
Amoxicillin is usually taken orally, with or without food, as directed by your healthcare provider. The dosage and frequency of amoxicillin depend on the type and severity of the infection.
Amoxicillin is taken every 12 hours (twice a day) or every 8 hours (three times a day).
Follow the prescribed dosage and schedule strictly. Do not skip doses or stop taking amoxicillin without consulting your healthcare provider.
The time it takes to feel better while taking amoxicillin can vary depending on the type of infection and individual response. Some people may notice improvement within a few days, while others may require a longer course of treatment. It's crucial to complete the full course of antibiotics as prescribed.
While amoxicillin is primarily used for bacterial infections, healthcare providers may sometimes prescribe it off-label for other conditions, such as:
Discuss any alternative uses of amoxicillin with your healthcare provider.
Amoxicillin is available in the following dosage forms:
Generic versions of amoxicillin are available under various brand names.
Amoxicillin is a prescription medication. You will need a valid prescription from a licensed healthcare provider to obtain this antibiotic.
The use of amoxicillin can lead to various side effects in some individuals. These side effects can range from mild to severe and may require medical attention depending on their severity.
Common mild side effects of amoxicillin use include:
More severe side effects of amoxicillin use can include:
If you experience any severe side effects while taking amoxicillin, seek immediate medical attention.
Inform your healthcare provider about any existing medical conditions, allergies, or other medications you are taking before starting treatment with amoxicillin. This includes prescription drugs, over-the-counter medications, and dietary supplements, as they may interact with amoxicillin.
Tell your provider if you are taking these medications or supplements:
Mention medical conditions such as:
If you are pregnant, planning to become pregnant, or breastfeeding, consult your healthcare provider before using amoxicillin to assess potential risks and benefits.
Amoxicillin can be taken with or without food. Take the medication around the same time every day.
Swallow amoxicillin tablets or capsules whole with a full glass of water.
Limit alcohol consumption while taking amoxicillin, as it may increase the risk of side effects.
Take the full course of treatment, even if you are feeling better. Do not discontinue the use of amoxicillin or increase your dosage without consulting your healthcare provider.
In case of an amoxicillin overdose, seek immediate medical attention. Symptoms may include severe nausea, vomiting, diarrhea, and abdominal cramping. If you experience any of these symptoms, call the poison control helpline at 1-800-222-1222. If an individual has collapsed, is having seizures, or is unresponsive, call 9-1-1 immediately.
Amoxicillin is available in various strengths, including:
The typical starting dose of amoxicillin for bacterial infections can vary depending on factors such as the type of infection, its severity, your age, and other medical conditions. It's crucial to follow your healthcare provider's instructions regarding dosage and administration carefully.
For most adults and children weighing 40 kg (about 88 pounds) or more with mild to moderate infections, the typical starting dose of amoxicillin may be:
For pediatric patients and those with lower body weights, the dose may be adjusted based on weight and the specific infection being treated. The oral suspension is often used for pediatric dosing, and the dose is calculated based on the child's weight and the strength of the suspension.
Amoxicillin should be taken with a full glass of water to ensure proper absorption. It can be taken with or without food.
Your healthcare provider will determine the duration of treatment based on the type of infection and your response to the medication. It's important to complete the full course of treatment as prescribed, even if your symptoms improve before the medication is finished.
If you have any questions about your dosage or how to take amoxicillin, contact your healthcare provider or pharmacist. If you want to talk to a provider right away, consider booking an online doctor appointment on Sesame to discuss your concerns.
If you miss a dose of amoxicillin, take it as soon as you remember. If it's close to the time for your next dose, skip the missed dose and continue with your regular dosing schedule. Avoid taking a double dose of amoxicillin to make up for a missed one.
Continue taking amoxicillin as prescribed by your healthcare provider, even if you start feeling better. Abruptly stopping amoxicillin can lead to incomplete treatment and potential complications. Follow your provider's instructions regarding the duration of treatment.
Store amoxicillin according to the instructions provided by your healthcare provider or pharmacist. It should be kept at room temperature, away from excessive heat, light, and moisture. Ensure the container is tightly closed and keep the medication out of the reach of children.