Mox
✅ Treats bacterial infections
✅ Reduces inflammation
✅ Alleviates fever
✅ Oral suspension available
✅ Effective against respiratory infections
Mox contains Amoxicillin.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
⚡ Quick Answer — What is Mox?
Mox is a broad-spectrum amoxicillin capsule used to treat bacterial infections of the respiratory tract, ear, sinuses, urinary tract, skin, and dental tissues. Available in 250 mg and 500 mg strengths. Manufactured by Sun Pharma. Standard adult dose is 500 mg three times daily for 5–7 days. Complete the full prescribed course even if symptoms resolve early.
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Mox is a widely used amoxicillin capsule manufactured by Sun Pharma. Amoxicillin is a beta-lactam antibiotic in the aminopenicillin class — a first-line treatment for common bacterial infections worldwide and one of the most prescribed medicines in human medicine. Each capsule contains amoxicillin trihydrate equivalent to either 250 mg or 500 mg of amoxicillin, providing flexible dosing for adult and paediatric infections.
Mox is on the WHO Model List of Essential Medicines and remains the drug of choice for a long list of community-acquired infections, particularly in primary care.
What Is Mox?
Mox is a prescription broad-spectrum beta-lactam antibiotic active against a wide range of Gram-positive and selected Gram-negative bacteria. It is structurally related to ampicillin but has better oral bioavailability (~95%) and is more consistently absorbed regardless of food.
Mox is typically prescribed for:
- Acute otitis media (middle-ear infection) — first-line in children and adults
- Bacterial rhinosinusitis when antibiotics are indicated
- Streptococcal pharyngitis / tonsillitis (strep throat)
- Community-acquired pneumonia — in uncomplicated cases in otherwise healthy adults
- Skin and soft-tissue infections caused by streptococci or susceptible staphylococci
- Uncomplicated urinary tract infections in selected cases where susceptibility is known
- Dental infections — abscess, post-extraction infection
- Helicobacter pylori eradication — in triple or quadruple therapy regimens
- Prophylaxis of bacterial endocarditis in high-risk dental procedures (for selected patients per guidelines)
Amoxicillin alone does not cover beta-lactamase-producing bacteria such as many Haemophilus, Moraxella, and S. aureus strains — for these, amoxicillin + clavulanic acid (e.g. Augmentin) is preferred.
How Does Mox Work?
Amoxicillin is a bactericidal antibiotic — it kills bacteria rather than just inhibiting their growth:
- It binds penicillin-binding proteins (PBPs) embedded in the bacterial cell wall
- PBPs are normally responsible for the final step of peptidoglycan cross-linking, which gives the cell wall its mechanical strength
- Blocking PBPs stops new cell-wall synthesis — as growing bacteria attempt to divide, their fragile cell wall fails and they undergo osmotic lysis
- Amoxicillin is well absorbed orally (~95%) and has a half-life of about 1 hour, which is why dosing is every 8 hours
- The drug distributes widely into tissue, including middle ear fluid, sinuses, pleural and peritoneal fluid, and skin — but not well into CSF unless the meninges are inflamed
Uses and Indications
- Acute otitis media — first-line in children and adults when antibiotics are indicated
- Bacterial sinusitis — first-line in most guidelines (AAP, IDSA, NICE)
- Streptococcal pharyngitis — preferred over penicillin V for compliance (once or twice daily regimens)
- Community-acquired pneumonia — outpatient, in otherwise healthy adults
- Dental infections — abscess, pericoronitis, post-extraction infection
- Early Lyme disease
- Helicobacter pylori — as part of combination eradication therapy
- Uncomplicated skin and soft-tissue infections caused by susceptible organisms
Mox Dosage and Administration
| Indication | Adult Dose | Duration |
|---|---|---|
| Ear / sinus / throat infection | 500 mg three times daily (or 875 mg twice daily) | 5–7 days (10 days for strep throat) |
| Community-acquired pneumonia (mild) | 1 g three times daily | 5 days |
| Uncomplicated UTI | 500 mg three times daily | 5–7 days (susceptibility-driven) |
| Dental abscess | 500 mg three times daily | 5 days (plus drainage) |
| Early Lyme disease | 500 mg three times daily | 14–21 days |
| H. pylori eradication | 1 g twice daily + PPI + clarithromycin OR metronidazole | 10–14 days |
| Endocarditis prophylaxis (dental) | 2 g single dose, 30–60 min before procedure | Single dose |
| Paediatric (standard) | 25–50 mg/kg/day divided every 8 hours | Indication-dependent |
| Paediatric (high-dose, e.g. AOM) | 80–90 mg/kg/day divided every 12 hours | 10 days |
| CrCl 10–30 mL/min | 250–500 mg every 12 hours | Indication-dependent |
| CrCl <10 mL/min / dialysis | 250–500 mg every 24 hours (give dose post-dialysis on dialysis days) | Specialist-guided |
How to Take Mox Properly
- Swallow the capsule whole with a full glass of water
- Can be taken with or without food — food does not significantly affect absorption, though a small amount may reduce mild GI upset
- Complete the full prescribed course even if symptoms resolve early — stopping prematurely increases relapse and resistance risk
- Space doses as evenly as possible (every 8 hours for three-times-daily regimens)
- If you miss a dose and the next is within 2 hours, skip the missed dose. Never double up
- Probiotics or live yoghurt during and after the course may reduce antibiotic-associated diarrhoea
- Amoxicillin does not reduce the effectiveness of combined oral contraceptives in most clinical scenarios, contrary to older advice — but backup contraception is still reasonable if vomiting or severe diarrhoea occurs
Side Effects of Mox
Most people tolerate amoxicillin well. Most side effects are mild and resolve after the course ends.
| Severity | Side Effect |
|---|---|
| Common (≥1 in 10) | Nausea, mild diarrhoea, abdominal discomfort, skin rash |
| Common (≥1 in 100) | Vomiting, vaginal candidiasis, oral thrush, altered taste |
| Uncommon | Urticaria, dizziness, insomnia, raised liver enzymes, interstitial nephritis |
| Rare but serious | Clostridioides difficile-associated diarrhoea / colitis, Stevens-Johnson syndrome, DRESS, acute generalised exanthematous pustulosis (AGEP), severe hepatitis, cholestatic jaundice, anaphylaxis |
Seek urgent medical attention for widespread rash, swelling of the face, tongue, or throat, difficulty breathing, severe watery diarrhoea with blood or mucus, or yellowing of the eyes or skin.
Amoxicillin and mononucleosis
Patients with infectious mononucleosis (Epstein-Barr virus) who receive amoxicillin develop a characteristic widespread non-allergic rash in about 80–95% of cases. This is not a true penicillin allergy and does not preclude future amoxicillin use, but patients often carry the “allergy” label forward needlessly.
Warnings and Precautions
- Penicillin allergy. About 10% of patients report “penicillin allergy” but fewer than 1% have a true IgE-mediated allergy on formal testing. Even so, in anyone reporting a prior anaphylaxis, Stevens-Johnson syndrome, or DRESS to any penicillin or cephalosporin, amoxicillin must be avoided
- Viral infections. Not active against viruses — amoxicillin will not help colds, flu, uncomplicated sore throats, or bronchitis of viral origin. Inappropriate use accelerates resistance
- Infectious mononucleosis. Avoid — see rash note above
- Renal impairment. Adjust dose as per renal function
- Pregnancy and breastfeeding. Amoxicillin is considered safe in pregnancy and during breastfeeding
- Diarrhoea. Mild diarrhoea is common. Severe watery diarrhoea, fever, or abdominal pain after antibiotics can indicate C. difficile colitis — stop the antibiotic and seek medical review
Contraindications — Who Should NOT Take Mox
- Known hypersensitivity to amoxicillin or any other penicillin
- Prior severe hypersensitivity (anaphylaxis, Stevens-Johnson syndrome, DRESS) to any beta-lactam antibiotic, including cephalosporins and carbapenems
- Active infectious mononucleosis
Drug Interactions
| Drug / Class | Interaction |
|---|---|
| Methotrexate | Amoxicillin reduces methotrexate renal clearance — increases toxicity. Use with caution and monitor MTX levels |
| Allopurinol | Higher risk of amoxicillin-induced rash |
| Warfarin | May modestly raise INR through altered gut flora and reduced vitamin K synthesis — monitor INR during course |
| Oral contraceptive pill | Modern evidence does not support a meaningful reduction in contraceptive efficacy, despite historic advice. Consider backup if vomiting or severe diarrhoea occurs |
| Probenecid | Reduces renal clearance of amoxicillin; raises blood levels (used therapeutically in some regimens) |
| Alcohol | No direct interaction; moderate alcohol intake is acceptable during treatment |
Tell your doctor about all prescription and non-prescription medications before starting Mox.
What to Do in Case of Overdose
Amoxicillin overdose is usually well tolerated but can cause GI upset and, rarely, crystalluria with renal impairment. Adequate hydration is usually sufficient. Contact your local poisons service if a child ingests a large quantity.
Storage Instructions
- Store below 25 °C in a dry place, away from direct sunlight
- Keep in the original blister packaging
- Keep out of reach of children
- Do not use after the expiry date printed on the pack
- Dispose of unused capsules via a pharmacy take-back scheme where available
Related Alternatives on MedsBase
Looking for related antibiotic options?
- Augmentin — amoxicillin + clavulanate for beta-lactamase-producing bacteria
- Azee — azithromycin, a macrolide alternative for penicillin-allergic patients
- Ceftum — cefuroxime, a second-generation cephalosporin
- Ciplox — ciprofloxacin, a fluoroquinolone for UTI and other Gram-negative infections
- Erythromycin — classical macrolide, alternative to penicillin
- Flagyl — metronidazole, for anaerobic and protozoal infections (and part of H. pylori triple therapy)
- Browse all Antibiotics →
Frequently Asked Questions
What is Mox used for?
Mox is a broad-spectrum amoxicillin antibiotic used for bacterial infections of the middle ear, sinuses, throat, lungs, skin, urinary tract, and teeth, for Helicobacter pylori eradication, and for selected prophylactic indications.
How fast does Mox start working?
Most patients feel meaningful improvement within 48–72 hours. If you are not improving by day 3, or are getting worse, seek medical review — the infection may be resistant or need a different antibiotic.
Should I take Mox with food?
Either works — amoxicillin absorption is not meaningfully affected by food. Taking with a small meal can reduce mild nausea.
Do I need to finish the full course?
Yes — always complete the prescribed course even if you feel better. Stopping early risks relapse and promotes antibiotic resistance.
Can I drink alcohol while taking Mox?
Moderate alcohol intake does not meaningfully interact with amoxicillin — the classic “never drink on antibiotics” advice comes mainly from metronidazole (Flagyl) and tinidazole, which cause a disulfiram-like reaction. Still, heavy drinking while fighting an infection slows recovery.
What if I miss a dose?
Take it as soon as you remember unless the next scheduled dose is within 2 hours, in which case skip the missed dose. Never double up.
Will Mox treat a cold or flu?
No. Colds, flu, and most acute bronchitis are caused by viruses and are unaffected by antibiotics. Inappropriate antibiotic use for viral infections drives resistance without providing any benefit.
Will Mox affect my oral contraceptive pill?
Current evidence indicates that amoxicillin does not meaningfully reduce combined oral contraceptive efficacy in most women, contrary to earlier advice. Backup contraception is still reasonable if you have vomiting or severe diarrhoea while on the antibiotic.
I had a rash on amoxicillin years ago — am I allergic?
Not necessarily. Many “amoxicillin rashes” are non-allergic, particularly in patients who had mononucleosis at the time. True IgE-mediated allergy is uncommon. If your rash was mild and not associated with anaphylaxis, Stevens-Johnson, or DRESS, talk to your doctor — formal allergy delabelling is often worthwhile because amoxicillin is a first-line drug for many infections.
Is Mox safe in pregnancy?
Yes — amoxicillin is considered safe in pregnancy and during breastfeeding and is often the antibiotic of choice for common infections in pregnant patients.
What is the difference between amoxicillin and Augmentin?
Augmentin is amoxicillin combined with clavulanic acid, which extends coverage to bacteria that produce beta-lactamase enzymes (many Haemophilus, Moraxella, and S. aureus strains). It is used when amoxicillin alone is insufficient — e.g. recurrent sinusitis, animal bites, some skin infections.
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| Strength | 250 mg, 500 mg |
|---|---|
| Quantity | 30 Capsule/s, 60 Capsule/s, 90 Capsule/s, 180 Capsule/s |
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