Amoxicillin, sold most widely as Amoxil, is a aminopenicillin antibiotic used for respiratory, ENT, dental and urinary infections. This guide covers how it works, what a standard course looks like, and how ShiningRX supplies it to trade buyers and consumers in the USA, UK and Australia.
Key takeaways
- Amoxicillin is a aminopenicillin antibiotic indicated for respiratory, ENT, dental and urinary infections.
- Typical dosing: 500 mg three times daily or 875 mg twice daily for 5–7 days.
- Onset is symptom improvement in 48–72 hours; effect lasts 8–12 hour dosing interval.
- Most reported side effects are diarrhoea and other mild, self-limiting reactions.
- Store below 25 °C; reconstituted suspension refrigerated.
Amoxicillin at a glance
| Attribute | Detail |
|---|---|
| Drug class | aminopenicillin antibiotic |
| Common brand | Amoxil |
| Licensed use | respiratory, ENT, dental and urinary infections |
| Available strengths | 250 mg, 500 mg, 875 mg, suspensions |
| Dosage form | capsule / tablet / suspension |
| Typical onset | symptom improvement in 48–72 hours |
| Duration / dosing interval | 8–12 hour dosing interval |
| Storage | below 25 °C; reconstituted suspension refrigerated |
How Amoxicillin works
As a aminopenicillin antibiotic, Amoxicillin acts on the pathway that drives respiratory, ENT, dental and urinary infections. The pharmacological effect is dose-related, which is why prescribers begin at the lowest useful strength and adjust on response rather than starting at the maximum. In practice that means 500 mg three times daily or 875 mg twice daily for 5–7 days
Starting a Amoxicillin course
- 1
Clinical assessment
Confirm the indication for respiratory, ENT, dental and urinary infections, review comorbidities and check the contraindication list before the first dose.
- 2
Initiate at the standard dose
500 mg three times daily or 875 mg twice daily for 5–7 days
- 3
Review at the first checkpoint
Reassess once the expected onset window of symptom improvement in 48–72 hours has passed and document tolerability.
- 4
Titrate or switch
If response is partial and tolerance is good, step up within the licensed range; if tolerance is poor, consider Azithromycin.
Safety profile in brief
Commonly reported effects include diarrhoea, rash, candidiasis. Amoxicillin should be avoided in penicillin allergy and infectious mononucleosis. Any severe, persistent or unexpected reaction warrants stopping the medicine and seeking clinical review.

