Antibiotic Decision Guide
Select Your Situation
Results
Select your infection type and allergy status to see recommended alternatives.
When your doctor prescribes Novamox, youâre getting amoxicillin - one of the most common antibiotics used worldwide. But what if it doesnât work? Or youâre allergic? Or itâs too expensive? Youâre not alone in asking: amoxicillin alternatives exist, and not all are created equal.
What is Novamox, really?
Novamox is just a brand name for amoxicillin, a penicillin-type antibiotic. It kills bacteria that cause infections like ear infections, sinusitis, strep throat, pneumonia, and urinary tract infections. Itâs usually taken as a tablet, capsule, or liquid, twice or three times a day for 5 to 10 days. In Australia, itâs available by prescription only.
Amoxicillin works by breaking down the cell walls of bacteria. Itâs broad-spectrum, meaning it hits a wide range of bacteria - but not all. It doesnât work against viruses (like colds or flu), and itâs not effective against certain resistant strains like MRSA.
Side effects? Common ones include nausea, diarrhea, and rash. About 1 in 10 people report mild stomach upset. Serious allergic reactions (swelling, trouble breathing) are rare but need immediate care.
Why look for alternatives to Novamox?
People switch from amoxicillin for several real reasons:
- They had a rash or stomach issues with it
- The infection didnât improve after 3-4 days
- Theyâre allergic to penicillin (about 10% of people say they are, though only 1-2% are truly allergic)
- Theyâre in a region where resistance to amoxicillin is rising - especially for ear infections and sinusitis
- Cost or availability - some alternatives are cheaper or easier to get
Itâs not about swapping for fun. Itâs about matching the right drug to the bug - and to your body.
Common alternatives to Novamox
Here are the most frequently prescribed alternatives, based on Australian prescribing guidelines and clinical evidence:
1. Amoxicillin-Clavulanate (Co-amoxiclav)
This is amoxicillin + clavulanic acid - a combo that blocks bacteria from breaking down the antibiotic. Itâs stronger against resistant strains. Often used when amoxicillin alone fails, especially for sinus infections, bite wounds, or recurrent ear infections.
Downside? More stomach upset. Diarrhea happens in up to 25% of people. Itâs also more expensive than plain amoxicillin.
2. Cephalexin (Keflex, Ceporex)
A first-generation cephalosporin. Often used when someone says theyâre allergic to penicillin - though cross-reactivity is possible in about 5-10% of cases. Itâs good for skin infections, bone infections, and some respiratory bugs.
Itâs taken 3-4 times a day, which is less convenient than amoxicillinâs twice-daily dosing. But itâs often cheaper and works well where amoxicillin doesnât.
3. Doxycycline
A tetracycline antibiotic. Not a penicillin, so safe for most penicillin-allergic people. Used for sinus infections, chest infections, Lyme disease, and acne. Also used for tick-borne illnesses common in rural Australia.
Itâs taken once or twice daily. Must be taken on an empty stomach with a full glass of water - and you canât lie down for 30 minutes after. It makes your skin super sensitive to sunlight. Avoid if youâre under 12 or pregnant.
4. Azithromycin (Zithromax)
A macrolide antibiotic. Often called the "Z-pack" because itâs usually taken for just 3-5 days. Popular for respiratory infections, especially when people want a shorter course.
Itâs less effective than amoxicillin for strep throat and ear infections, but better for atypical pneumonia (like walking pneumonia). Itâs also used when someone has a true penicillin allergy.
Side effects? Diarrhea, nausea, and rare heart rhythm changes - especially in older people or those with existing heart conditions.
5. Clindamycin
Used for skin and soft tissue infections, especially if MRSA is suspected. Also an option for penicillin-allergic patients with dental infections.
Big risk: C. diff diarrhea. This can be life-threatening. Itâs not a first-line choice unless other options are ruled out.
Comparison table: Novamox vs. top alternatives
| Antibiotic | Class | Typical Dose | Duration | Penicillin Allergy Safe? | Common Side Effects | Best For |
|---|---|---|---|---|---|---|
| Novamox (Amoxicillin) | Penicillin | 500mg twice daily | 7-10 days | No | Diarrhea, nausea, rash | Ear, sinus, strep throat, UTI |
| Amoxicillin-Clavulanate | Penicillin + beta-lactamase inhibitor | 875mg/125mg twice daily | 7-10 days | No | Diarrhea (higher risk), vomiting | Resistant infections, sinusitis, bite wounds |
| Cephalexin | Cephalosporin | 500mg three to four times daily | 7-10 days | Usually yes (caution) | Diarrhea, stomach upset | Skin, bone, mild respiratory |
| Doxycycline | Tetracycline | 100mg once or twice daily | 7-14 days | Yes | Sun sensitivity, nausea, esophagus irritation | Sinus, chest, Lyme, acne |
| Azithromycin | Macrolide | 500mg day 1, then 250mg days 2-5 | 3-5 days | Yes | Diarrhea, nausea, rare heart rhythm issues | Atypical pneumonia, short-course needs |
| Clindamycin | Lincosamide | 300-450mg three to four times daily | 7-14 days | Yes | Severe diarrhea (C. diff risk), metallic taste | MRSA, dental, deep skin infections |
When should you NOT switch?
Donât assume an alternative is better just because itâs "stronger" or "newer." Amoxicillin is still first-line for good reason:
- Itâs effective for the most common infections
- Itâs cheap - often under $10 with a PBS subsidy in Australia
- Itâs safe for kids and pregnant women
- It has the least impact on gut bacteria compared to broader-spectrum drugs
Switching without reason can lead to more side effects, higher cost, and even antibiotic resistance. If amoxicillin works, stick with it.
What about natural or herbal alternatives?
Youâll see claims about garlic, honey, oregano oil, or echinacea as "natural antibiotics." But hereâs the truth: none have enough clinical evidence to replace antibiotics for bacterial infections like pneumonia or strep throat.
Honey can help soothe a sore throat - but it wonât kill the bacteria causing it. Garlic has some lab studies showing antibacterial effects, but not at doses you can safely swallow.
Using these instead of prescribed antibiotics can delay real treatment. Thatâs dangerous. Infections donât wait.
What to do if Novamox doesnât work
If youâve taken amoxicillin for 48-72 hours and feel worse - or if fever returns - contact your doctor. Donât just stop or double the dose.
Your doctor might:
- Check for a viral infection (like flu or mono)
- Order a throat swab or imaging (like a sinus X-ray)
- Switch to amoxicillin-clavulanate
- Test for resistant strains
Donât self-prescribe. Antibiotics arenât interchangeable. The wrong choice can make things worse.
How to reduce side effects
If youâre on amoxicillin or any alternative:
- Take it with food if stomach upset occurs - unless it says "on empty stomach" (like doxycycline)
- Stay hydrated
- Consider a probiotic (like Lactobacillus) during and after treatment - some studies show it reduces antibiotic-related diarrhea
- Finish the full course, even if you feel better
Stopping early is one of the biggest reasons bacteria become resistant. Thatâs not just your problem - itâs everyoneâs.
Final takeaway
Novamox (amoxicillin) is still the go-to for most common bacterial infections. But itâs not the only option. Alternatives like amoxicillin-clavulanate, cephalexin, doxycycline, and azithromycin each have their place - based on the infection, your allergy history, and resistance patterns.
The key is not to pick the strongest drug. Itâs to pick the right one. Thatâs why you need a doctorâs advice. Donât swap antibiotics based on a friendâs story or a Google search. Infections are personal. So should your treatment be.
Is Novamox the same as amoxicillin?
Yes. Novamox is a brand name for amoxicillin. The active ingredient is identical. Generic amoxicillin works the same way and is usually cheaper.
Can I take amoxicillin if Iâm allergic to penicillin?
No. If youâve had a true penicillin allergy - like hives, swelling, or trouble breathing - you should avoid amoxicillin and other penicillin-based antibiotics. Your doctor will choose a non-penicillin alternative like azithromycin or doxycycline.
Which is stronger: amoxicillin or azithromycin?
Neither is "stronger" - they work differently. Amoxicillin is better for ear infections and strep throat. Azithromycin is better for atypical pneumonia and when you need a short course. Effectiveness depends on the infection type.
Can I buy amoxicillin over the counter in Australia?
No. All antibiotics, including amoxicillin, require a prescription in Australia. Buying them online without a prescription is illegal and risky - you could get fake, expired, or wrong-dose medication.
How long does it take for amoxicillin to work?
Most people start feeling better within 24-48 hours. But you must finish the full course - usually 7-10 days - even if symptoms disappear. Stopping early can cause the infection to return or become resistant.
Are amoxicillin alternatives more expensive?
Sometimes. Plain amoxicillin is one of the cheapest antibiotics in Australia, often under $10 with PBS subsidy. Alternatives like azithromycin or amoxicillin-clavulanate can cost $30-$50. But cost isnât the only factor - effectiveness and safety matter more.
Graham Holborn
Hi, I'm Caspian Osterholm, a pharmaceutical expert with a passion for writing about medication and diseases. Through years of experience in the industry, I've developed a comprehensive understanding of various medications and their impact on health. I enjoy researching and sharing my knowledge with others, aiming to inform and educate people on the importance of pharmaceuticals in managing and treating different health conditions. My ultimate goal is to help people make informed decisions about their health and well-being.