Erythromycin
In stock
500mg · 250mg
from A$47.10
In brief
As a macrolide antibiotic, erythromycin is described in the E-Mycin leaflet for bacterial infections, for acne control alongside other acne treatments, and for preventing infection in penicillin-allergic people with rheumatic disease, congenital heart disease or another acquired valvular heart disease.
E-Mycin uses: infections, acne and preventive cover for some heart conditions
According to the E-Mycin consumer medicine information, this macrolide is used to treat bacterial infections and, together with other acne treatments, to help control acne. It is also used to prevent infection in penicillin-allergic people who have rheumatic disease, congenital heart disease or another acquired disease of the heart valves.
This listing shows erythromycin 250 mg and 500 mg. It does not name the manufacturer of the product supplied, so check the label on the pack you receive and confirm with your prescriber or pharmacist that it matches your prescription.
250 mg erythromycin across 30, 90 and 360 units
Compare packs of the same strength. These examples are for 250 mg and are calculated from the listed prices at the shop’s Australian-dollar rate on 9 October 2026, before delivery or other checkout charges.
| Strength | Pack size | Pack price | Price per unit |
|---|---|---|---|
| 250 mg | 30 | A$47.41 | A$1.58 |
| 250 mg | 90 | A$102.01 | A$1.13 |
| 250 mg | 360 | A$316.12 | A$0.88 |
Taking the 30 pack as the starting point, the 90 pack lowers the cost of each unit by around 28.3% and the 360 pack by around 44.4%.
A lower price per unit means a larger upfront payment. Choose only the quantity and strength appropriate to your prescription, and check the expiry date. Prices can change, so confirm the current pack price before ordering.
E-Mycin brand facts and how Zithromax differs
E-Mycin is an erythromycin brand, and the details quoted on this page come from its leaflet rather than from the product on this listing. Zithromax is a separate medicine: its active ingredient is azithromycin, an azalide, which is a subclass of the macrolides. According to the Zithromax leaflet, an erythromycin allergy rules Zithromax out.
Macrolide allergy, severe liver disease and risky drug pairings
The E-Mycin leaflet rules out use with an allergy to erythromycin or another macrolide, with severe liver disease, or with a heart rhythm disorder. Some medicines must not be combined with it because the interaction is dangerous; terfenadine, cisapride and simvastatin are examples, and the leaflet gives the full list. If you are pregnant or breastfeeding, the leaflet asks you to weigh the risks and benefits with your doctor.
No effect on colds or flu, and a course taken to the end
Viral illnesses such as a cold or influenza do not respond to erythromycin. The leaflet links the dose to the type and severity of the infection, and asks that the whole course be taken even after you start to feel better.
Nausea and cramps versus jaundice, hearing changes and bloody diarrhoea
Nausea, vomiting, stomach cramps, oral or vaginal thrush, headache and fever are grouped as less serious in the E-Mycin leaflet. Listed as serious are yellow skin or eyes (jaundice), problems with hearing or sight, an irregular heartbeat, muscle pain, dizziness, hallucinations and drowsiness. At the most serious end sit signs of allergy (a rash, itching, hives, a swollen face, lips or tongue, wheezing or breathlessness) and watery, bloody or severe diarrhoea.
E-Mycin tablets and their below-30 °C storage requirement
The E-Mycin leaflet asks for its tablets to be stored below 30 °C. Follow the storage directions on the pack you receive.
Delivery across Australia
Standard delivery: 14–22 days. Express tracked delivery: 7–14 days, with the tracking number sent by email. These are estimated delivery times, not guaranteed arrival dates.
Australian cities and delivery information
The Australian delivery options above apply to the destinations below. A city listing does not indicate a physical pharmacy branch or local stock.
| City | State or territory |
|---|---|
| Sydney | New South Wales |
| Melbourne | Victoria |
| Brisbane | Queensland |
| Perth | Western Australia |
| Adelaide | South Australia |
| Hobart | Tasmania |
| Gold Coast | Queensland |
| Canberra | Australian Capital Territory |
| Cairns | Queensland |
| Central Coast | New South Wales |
| Townsville | Queensland |
| Darwin | Northern Territory |
| Newcastle | New South Wales |
| Geelong | Victoria |
| Gladstone | Queensland |
| Port Macquarie | New South Wales |
| Bathurst | New South Wales |
| Forbes | New South Wales |
| Geraldton | Western Australia |
| Goulburn | New South Wales |
