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Doctor insights on: Amoxicillin 400mg

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What would the dosage be for an adult of amoxicillin 400MG/5ML SUSP 100ML ?

What would the dosage be for an adult of amoxicillin 400MG/5ML SUSP 100ML ?

Directions on dose: should have been written on the prescribed medicine or it's box. A dose of 5 ml to 10 ml every 8 hours would be typical. ...Read more

Amoxicillin (Definition)

Amoxicillin is in the penicillin class of antibiotics. All penicillins are distinguished by the presence of a beta-lactam ring, and are known to kill bacteria by inhibiting synthesis (production) ...Read more


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How much amoxicillin 400mg should I give me son that weights 41 pounds and is 6 for strep?

How much amoxicillin 400mg should I give me son that weights 41 pounds and is 6 for strep?

Dose for strep: You can give him roughly 25 mg/kg per dose, twice daily dosing for 10 days. If you have the 400 mg/5 ml suspension of amoxicillin, you could give him 6 ml (=480 mg) twice daily for 10 days. Make sure to give him the full 10 day course even if he is feeling well after a couple of days. ...Read more

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My 29lb daughter was given a dosage of 4ml twice a day of liquid amoxicillin (400mg/5ml). Does it correct? Not overdose ? Thank You.

 My 29lb daughter was given a dosage of 4ml twice a day of liquid amoxicillin (400mg/5ml). Does it correct? Not overdose ? Thank You.

Depends: The dosing for this med is based on both patient weight and what you are treating. For some respiratory or urinary infections the dosage of 50mg/kg/d would be expected.For an otitis media, 90mg/kg could be considered proper. Your dosage is at the lower end of normal for some issues and low for others. ...Read more

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My 42lb son was given a dosage of 6mls twice a day of liquid amoxicillin (400mg/5ml) for strep. Does this seem right? Worried about overdose. Thanks.

Yes: The dose your son was given is correct. Make sure he is staying hydrated and don't forget to get him a new tooth brush in a few days (his old one is likely teeming with strep). Hope he starts feeling better really soon! ...Read more

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My 70lb son was given a dosage of 18. 5mls twice a day of liquid amoxicillin (400mg/5ml) for strep. Does this seem right? Worried about overdose. Than

Seems high: That dose is about 1400 mg per dose which translates into 90 mg/kg per day. this is on the high end of treating resistant strep pneumo for otitis media. Definitely not appropriate dose for strep or pneumonia ...Read more

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My son was prescribed amoxicillin 400mg/5ml, at 9ml twice a day. Is this a normal amount for a 38lbs 4-1/2 yr old boy? So about 720mg x2for 24hr perio

My son was prescribed amoxicillin 400mg/5ml, at 9ml twice a day. Is this a normal amount for a 38lbs 4-1/2 yr old boy? So about 720mg x2for 24hr perio

Yes: Years ago (two decades) the recommended dose would be less, but germ resistance has changed that.Now we dose based on type of problem and weight. The med is concentrated in urine, so we can get by with less for UTI, but for ears/sinuses/etc we give up to 80-90mg/kg/day which is where this dose fits. ...Read more

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My 3 year old son is 32pounds and was given amoxicillin 400mg/5ml 100ml to take 5ml twice a day for strep. Take all&finish. Isn't the dosage too much

My 3 year old son is 32pounds and was given amoxicillin 400mg/5ml  100ml to take 5ml twice a day for strep. Take all&finish. Isn't the dosage too much

No, that dose is: fine. There is a dosing range depending on the child's weight, which is 40-80 mg/kg/day. He is 14.5 kg, so this dose is 55mg/kg/day, which is perfectly fine. ...Read more

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My son who is 2 yrs old and around 35lbs was prescribed amoxicillin 400mg/5ml 10ml twice a day does that sound accurate? Worried it might be too much?

My son who is 2 yrs old and around 35lbs was prescribed amoxicillin 400mg/5ml 10ml twice a day does that sound accurate? Worried it might be too much?

Not really: The dosing on this and most antibiotics depends on weight AND what you are treating.If it were a UTI or bronchitis where the abx gets into the germ areas easily we can use less, if ear infection we have to use more to get in.The dosing recommended for ear infections is 80-90 mg/kg/day.This would calculate to 716 mg twice a day or 1.78 tsp. Most just round up to 2 because the extra is not a problem ...Read more

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My baby is 20 lbs and doctor prescribed amoxicillin 400mg/5ml 1tsp or 5 ml twice a day. Is that correct?

My baby is 20 lbs and doctor prescribed amoxicillin 400mg/5ml  1tsp or 5 ml twice a day. Is that correct?

Yes..: That is correct for her weight. Usually sounds like a high dose but for some conditions it is necessary to use the maximum dose which is 90 mg/kg and if divided by two this would be the recommended dose. ...Read more

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My daughter was prescribed 1.5 ml amoxicillin (400mg/ 5 ml) twice a day for 10 days for strep. She is 24 pounds, but that seems like a low dose. She takes her last dose tomorrow, but we still have 1/2 a bottle!

My daughter was prescribed 1.5 ml amoxicillin (400mg/ 5 ml) twice a day for 10 days for strep. She is 24 pounds, but that seems like a low dose. She takes her last dose tomorrow, but we still have 1/2 a bottle!

Strep & amoxil dose: Current guidelines are 50mg/kg per dose with a 500mg per dose limit for twice a day dosing. Your daughter is 11 kg so her dose is 550 mg twice a day or 500 mg per dose due to dose limit - or 1.25 teaspoons per dose twice a day - a teaspoon is 5 ml . She was underdosed. Check with your doctor - she may need a strep culture to see if she's cured before giving additional meds. ...Read more

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My 8 year old daughter was prescribed 12.6 ML twice a day of amoxicillin 400MG / 5 ML suspension twice a day for pneumonia. Is this right?

My 8 year old daughter was prescribed 12.6 ML twice a day of amoxicillin 400MG / 5 ML suspension twice a day for pneumonia. Is this right?

Hard to say: The drug dose is based both on weight & problem. Without her weight it's hard to make specific recommendations. The estimated 55 lb 8 yo would get 80mg/kg/d with that schedule which is okay for a presumed pneumococcal pneumonia. You might be able to get by with less, but that germ has become more resistant over the past 2 decades. ...Read more

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My 6 year old 52 lbs was given Amoxicillin 400mg for a sinus infection. Take 20mls daily. Shouldn't this be twice a day?

My 6 year old 52 lbs was given Amoxicillin 400mg for a sinus infection. Take 20mls daily. Shouldn't this be twice a day?

Usually: This med is designed to be taken twice a day. That is how I would use it. It leaves the body through the kidneys & twice a day use increases retention. I would use 10 ml of the 400/5 liquid twice a day (not 20ml twice a day) ...Read more

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I took amoxicillin 400mg with pct & cetrizine hydrochloride. This has caused a wound on my penis glans. How do I treat this?

I took amoxicillin 400mg with pct & cetrizine hydrochloride.  This has caused a wound on my penis glans. How do I treat this?

Unlikely: The complication of antibiotic therapy is unlikely to be the cause of your penile lesion. See your doctor and get treated immediately. ...Read more

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My 40lbs 5yr old was given a dosage of 10 ml twice a day of liquid amoxicillin (400mg/5ml) for sinus infection Does this seem right? Thanks.

My 40lbs 5yr old was given a dosage of 10 ml twice a day of liquid amoxicillin (400mg/5ml) for sinus infection  Does this seem right? Thanks.

Seems high: For a severe sinus infection I would prescribe 45 mg / kg /day divided in 2 doses. Your child is 40 lb which is 18 kg. She should have about 800 mg / day which would be 400 mg twice a day. That would only be 5 cc every 12 hours. Double check with your doctor about this. ...Read more

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My 78 lb daughter was prescribed 5ml of amoxicillin (400mg/5ml) for Strep Throat. Is this the correct dosage?

My 78 lb daughter was prescribed 5ml of amoxicillin (400mg/5ml) for Strep Throat. Is this the correct dosage?

? low dose if once: a day, if twice a day that should be fine, depends on whether it is an immediate vs the extended release form, you want to talk to your doctor / pharmacist for confirmation, best wishes ...Read more

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My 30lb son (2.5 years old) was given a dosage of 7.5ml twice a day of amoxicillin (400mg/5ml) for ear infection. Does this seem right?

My 30lb son (2.5 years old) was given a dosage of 7.5ml twice a day of amoxicillin (400mg/5ml) for ear infection. Does this seem right?

80mg/kg: American Academy of Pediatrics has been advocating an 80 mg/kg/d dose of amoxicillin for many years now. At 400mg/5cc this comes out to 5.5 cc by mouth twice a day. The dose is a little high, even by our standard of rounding. A teaspoon and a half is 7.5 ccc. Your provider seems to have rounded this up, perhaps due to this age notoriously spitting up medicine. Ask her. ...Read more

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9yr old 78lb.male on amoxicillin 400mg/5ml (10ml bid) for 3 1/2 days so far for infection in mouth. Now has strep. Should this antibiotic cure it?

9yr old 78lb.male on amoxicillin 400mg/5ml (10ml bid) for 3 1/2 days so far for infection in mouth. Now has strep. Should this antibiotic cure it?

Normally yes: IF on the antibiotic when he acguired Strep I would suspectantibithe infection is resistant to the antibiotic and a new antibiotic should be given. I hope he feels better soon. ...Read more

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Dr. Philip Miller
1,129 doctors shared insights

Amoxil (Definition)

Amoxil is a third generation penicillin which is a kind of penincillin type drug (anti-bacterial ...Read more