Giardia or Giardiasis is a parasitic infection of the gut. It is caused by a microscopic parasite called Giardia lamblia. Giardiasis, along with amebiasis and leptospirosis, is an increasingly common waterborne disease that causes severe diarrhea, stomach cramps, and weight loss. These infections are contracted through water contaminated with human or animal fecal material. Giardia is prevalent throughout the world but is more common in developing countries where water sanitation is poor.   Standard treatment is parasitical drugs, but chronic and resistant strains of giardia are now growing. If you want to know how to treat giardia naturally, then fear not. Our home remedies for giardia are proven against this infection.  
The most common cause of giardiasis is contaminated water. Contaminated water can be from swimming pools, lakes, and even spas. Other sources of the parasite include diapers, animal farms, and agricultural runoffs.
Exposure to G. lamblia through food is less common because the heat kills the bacteria. Eating food rinsed with infected water or poor handling of food can expose you to the parasites.
Giardiasis can also spread via personal contact. For example, unprotected intercourse may pass on the infection. You may also get it from children especially if you work at a daycare center.   
The infection is rarely fatal and the immune system should cope. The symptoms of giardia are similar to many other intestinal infections. These include:
- greasy stools
- abdominal cramps
- weight loss
Vomiting and fever are a less common symptom, and blood-tinged feces are equally uncommon, but certainly possible.
Illness can last several months if untreated and is characterized by continued diarrheal symptoms. With chronic illness, malabsorption of fat, lactose, vitamin A, and vitamin B can occur as chronic diarrhea causes nutrients to be consistently lost.
- Use Oregon Grape
Oregon grape is a North American shrub also known as Mahonia aquifolium. It is also one of the best home remedies for giardia because the plant is loaded with a yellow alkaloid called berberine.
Using the plant will not only help with giardiasis but also indigestion. You can use Oregon grape capsules or tincture to treat any such problems. 
Before using, make sure you do not have any other issues. Most herbalists do not suggest using Oregon grape if you have gastrointestinal issues.
- Beetroot Juice
Beets are well-known for their anti-bacterial and anti-parasitic properties. They are also among the top home remedies for giardiasis. In fact, beet juice can help you get rid of the infection within a week!  
For this remedy, you will need 3-4 standard sized beetroots and a vegetable juicer. Wash the beets thoroughly and cut them into small pieces. Add the pieces to the juicer and pour the juice out into a glass.
Allium Sativa or garlic has been long used for many health conditions. It is also one of the most effective home remedies for giardia. According to research, garlic can inhibit the movement of Giardia lamblia. 
It may also have a direct effect on the parasite since an enzyme that causes cell degradation.
Chewing on raw garlic on an empty stomach is the best way to treat giardia in humans. If you choose to go for garlic supplement, you may want to consult a doctor.
Using garlic to treat giardia in daily meals may be beneficial in the long run but it will not help with the infection. This is because the active constituents in it are destroyed during cooking.
- Drink Grapefruit Juice
Drinking grapefruit juice and grapefruit seed extract is an excellent natural treatment for giardia.
The citrus is also one of the best sources of antioxidants and vitamin C.
You can also try adding a cup of vegetable juice. In fact, if you combining grapefruit and beetroot juice can get rid of giardiasis quickly.
- Consume Coconut Oil
Coconut oil has been used historically for many different purposes. Its powerful anti-parasitic compounds can help with both viral and bacterial infections. They also make it one of the best home remedies for giardiasis. 
The presence of auric acid makes the oil effective for Giardia lamblia. You can also try eating coconut if you are not a fan of consuming the oil.
Either way, it will help with infection and also boost the general health. Both the fruit and oil are also inexpensive and easily available.
- Take Wormwood Supplements
Wormwood is an excellent remedy to get rid of parasites and worms. It is also one of the most effective home remedies for giardiasis.
The ‘sesquiterpenes’ found in wormwood can break down the parasitic membranes. This neutralizes the parasite and stops the infection from spreading.
All you need to do is take one supplement of it on a daily basis.
They may also have different effects on people with problems like metabolic disorders. So, it is better to ask a health professional before using any herbs. Either way, wormwood supplements are the most used home remedies for giardia.
- Try Intestinal Flushes
Stimulating your excretion is one of the most effective home remedies for giardiasis. The most effective way to do this is simply by eating more grains.
Dietary fiber is essential for good digestion. It also helps in absorption of nutrients and excretion. Hence, eating more of it can help in cleaning the intestines.
Try consuming more fibers like flaxseeds and pectin. It will help restore your digestive health and get rid of problems like constipation.
- Birch Tinctures
Birch leaves have been used for thousands of years for many purposes. They are also among the best home remedies for giardiasis.
According to some studies, tinctures of birch leaves can be effective for giardiasis in humans. They are safe to use but make sure you ask your doctor before using.
Using horseradish is slightly similar to intestinal flush using grains. It is filled with antioxidants but its stimulating power is what helps the digestion.
Horseradish boosts the secretion of digestive juices. This, in turn, flushes out the waste and parasites from colon and the gut. Continuous use can get rid of the infection. 
The goldenseal herb is useful especially for the health of stomach and intestines.It is an excellent natural treatment for giardiasis.
The herb contains berberine which has an anti-parasitic effect.
Goldenseal is safer in comparison with all other herbs. You can use it in place of Oregon grape. Make sure to ask both your doctor and a herbalist before usage.
- Pumpkin Seeds
Pumpkin seeds are also inexpensive and available in every other store. You can eat one teaspoon of them at any time of the day.
Daily consumption of the seeds will flush out the parasites from the body.
Eating raw onions is the best way. You can add them to your salad or top your foods with it.
If cannot eat them raw, try grilling or frying them a little. Too much of either will destroy the important ingredients in onions.
- Probiotic Yogurt
You might have heard about the advantages of various probiotics for giardiasis including cultured yogurt. It is great for the gut health and bacteria. Eating probiotic yogurt can help with any infection related to the digestive system. The bonus is that it also tastes good! 
Make sure to not buy the flavored yogurt. You can add 1-2 bananas to a bowl of yogurt and have it for breakfast. This is one of the easiest home remedies for giardiasis.
- Drink More Water and Get Some Rest
Digestion-related disorders usually come with other problems such as diarrhea. Such complications cause dehydration in the body. This is why the water consumption during any such infection is important.
Try drinking more water than you normally do. You may also try detox water or have green tea. Stay away from sugary and unhealthy drinks.
Also, remember to rest the body. All health issues are improved when the body gets enough sleep.
- Pippali Rasayana
Pippali Rasayana is an Indian ayurvedic drug prepared from Palash and Piper Longum longum, two Indian herbs.
In a clinical trial, the herbal remedy was administered for a period of 15 days to patients suffering from giardiasis.
After 15 days of treatment, there was a complete disappearance of G. lamblia from the stools of 23 out of 25 patients.
General signs and symptoms of ill health and abdominal discomfort were significantly reduced.
Propolis, a resinous hive product collected by bees, has long been known as an antibacterial remedy and as a treatment for giardia.
In one study, 138 patients were treated with Propolis or ‘tinidazole’ which is the standard medical treatment.
Propolis was used in different concentrations and the results showed that at a 20% concentration, propolis was as effective as tinidazole.
When concentrations were raised, propolis showed a higher cure rate with no side effects. (34)
If you want to know how to treat giardia at home, then propolis is the best giardia cure there is.
Pineapple is absolutely delicious but it has a hidden secret when dealing with gut parasites.
Bromelain is an enzyme that is found in the pineapple fruit and has been shown to help the fight against parasites.
The enzymes break down parasites inside the body. Digestive pancreatic enzymes like bromelain should be taken as supplements both with and between meals.
Pineapple juice helps break down the cell walls and cysts of the giardia parasite. (35)
- Eat light and easier to digest foods while having the infection.
- You may drink homemade and natural fruit juices.
- Avoid sugary food since it can irritate the gut.
- If you get diarrhea, try not to consume milk and cheese until you feel better.