Quite simply, they turned to nature for their remedies, and thankfully there are plenty of natural ways to deal with infections. We are not suggesting you never take another prescription antibiotic, as they are very necessary in a lot of cases. We are just exploring some of the top natural antibiotics that can help keep your body infection free.
Top 5 Natural Antibiotics
Many people have turned to natural alternatives to prescription antibiotics, due in part to the growing concern of over-prescribing antibiotics and breeding super bacteria. The fear is that bacteria will grow and evolve past the abilities of modern medical science, and it is a legitimate concern.
Humans have been threatened by bacteria and viruses for thousands of years, and in many cases we are capable of dealing with them naturally. Here are a few of the best natural antibiotics.
Part of the onion family, garlic has been used to help treat all sorts of illness’ and diseases throughout history. It contains a compound known as allicin, which has similar properties to penicillin. This has fortified its position in natural medicine, with antibiotic, anti-viral, anti-parasitic, anti-fungal, anti-inflammatory and antioxidant qualities that have helped treat disease and improve health for millennia.
It is important to keep the garlic raw in order to harness its antibiotic qualities though, as high heat and acidic environments quickly destroy the allicin. 
If garlic isn’t your cup of tea, or you have a hot date and don’t want to ruin your first impression with garlic breath, try a garlic supplement instead.
These multi-layered bulbs of deliciousness do quite a bit more than add a wallop of flavor to your favorite dishes. Onions have powerful antibacterial and antibiotic capabilities that can help fortify your body against infection and disease. They have been used throughout history for respiratory problems, as a diuretic and even as a treatment for the influenza virus.
Much like garlic, it is important to keep onions as raw as possible to maintain the nutritional and antibiotic properties. They are also known to wreak havoc on your breath, so eat responsibly and hopefully frequently.
Nectar of the gods, this is one food-stuff that has a seemingly endless shelf-life. Jars of honey have been found in the tombs of ancient egyptian pharaohs, still edible! (The honey, not the pharaohs).
Ancient Romans even brought honey on the battlefields with them to help treat wounds and prevent infections. One could loosely attribute the rise of the Roman empire to honey, that and some guy named Alexander. 
Honey not only has natural antibiotic qualities, but antimicrobial, anti-inflammatory and antiseptic qualities as well. Much like garlic and onions though, raw honey is the best option when looking for these health benefits. Pasteurization eliminates much of the antibiotic and antioxidant qualities found in honey.
Use in moderation though, it is still packed full of sugar, natural or not you don’t want too much sugar in your diet.
With a laundry list of health and culinary benefits, ginger is a root that you should probably use more of. Some claim that ginger root is more effective in treating staph infections than traditional antibiotics, with none of the adverse effects. It is truly a remarkable antibiotic with anti-inflammatory qualities as well. 
Slice up some fresh ginger and add it to your cup of tea to create a delicious and healthful tonic.
One of our favorite uses for ginger is to help quell an upset stomach. When ingested it gets to work fast on the vagus nerve, which is usually responsible for nausea and general stomach discomfort. For quick relief just chew on a small piece of raw ginger or finely grate some into a cup of hot water.
5. Oregano Oil
Used both internally and externally, oil of oregano is a Mediterranean medical powerhouse, rapidly growing in popularity among natural health enthusiasts. Oregano is packed full of antioxidants, phenols and flavonoids which are a huge boon to our immune function. It is also considered a powerful anti-microbial, anti-viral, anti-fungal, antibacterial, anti-parasitic antibiotic. 
While bacteria and viruses ramp up the arms race, it still seems that many of these natural antibiotics are still quite effective in eliminating them from our body.
Why Natural Antibiotics are Important
Typically, when a person encounters an infection they visit their doctor. Generally they are prescribed an antibiotic and the infection clears up within a few days. The problem is difficult to see, but it is there.
The problem with prescription antibiotics is that they not only kill the bad bacteria causing the infection, but they kill all the bacteria. The human body has a vast amount of very beneficial bacteria at any given moment, responsible for a wide variety of things that keep our body running smoothly and healthily. By killing off all the bacteria it leaves our body helpless to clear up the infection naturally, which leaves us increasingly vulnerable to future infections. Compound this problem billions of times over with every prescription antibiotic imbiber across the globe, and we are breeding super bacteria that are increasingly difficult to control while we weaken our own natural ability to fight them off. 
It is an arms race between science and mother nature, which has only one outcome.
As we mentioned earlier, sometimes it is necessary to take a prescription antibiotic. Only using these antibiotics when necessary is the key, opt for natural alternatives whenever possible. Always work closely with your doctor or medical professional when dealing with an infection though, whether you choose natural or conventional methods, it is important to keep your doctor involved in the treatment process.