Amoxicillin vs Keflex, a side effect and efficacy comparison for a male patient aged 21
This is personalized comparison of Amoxicillin vs Keflex for a male aged 21. The study is created by eHealthMe based on reports from FDA.
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On Apr, 27, 2013: 30,144 people are studied in Amoxicillin vs Keflex


Information of patient in study:
| Gender | Age | Reason for the drug |
| Male | 18 | Acne |
Drugs to compare:
| Drug | Ingredients | Company |
| Amoxicillin | amoxicillin | not specified |
| Keflex | cephalexin | not specified |
eHealthMe real world results:
For males aged 18 (±5):
Most common side effects:
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Most common side effects experienced by people in long term use:
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For people in general (regardless of gender or age):
Most common side effects:
(click on each outcome to view in-depth analysis, incl. how people recovered)| Amoxicillin | Keflex | |
| 1 | Pyrexia | Pain |
| 2 | Nausea | Anxiety |
| 3 | Pain | Nausea |
| 4 | Dyspnoea | Fatigue |
| 5 | Anxiety | Dyspnoea |
| 6 | Fatigue | Depression |
| 7 | Vomiting | Back Pain |
| 8 | Diarrhoea | Pyrexia |
| 9 | Headache | Anaemia |
| 10 | Dizziness | Chest Pain |
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Most common side effects experienced by people in long term use:
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Drug effectiveness in real world:
- Amoxicillin for Acne reported by 14 people (updated 4 months ago)
- Keflex for Acne reported by 7 people (updated 3 months ago)
Alternative drugs:
- Acne (51 drugs) (updated 1 day ago)
Side effects in real world:
On eHealthMe, Amoxicillin (amoxicillin) is often used to treat infection. Keflex (cephalexin) is often used to treat infection. Find out below the conditions the drugs are used for, how effective they are, and any alternative drugs that you can use to treat those same conditions.
What is the drug used for and how effective is it:
Other drugs that are used to treat the same conditions:
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NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also considered.
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