Cow urine

Cow urine is a liquid by-product of metabolism in cows. Cow urine is also used in medicine in India, Myanmar, Nepal, and Nigeria. While cow urine and cow dung have benefits as fertilizers, the proponents' claims about its curing diseases and cancer have no scientific backing.
Claimed benefits and usage.
In religious rituals.
Some Hindus claim that cow urine has a special significance as a medicinal drink. The sprinkling of cow urine is said to have a spiritual cleansing effect as well.
Cattle were a basic economic unit in ancient India, and cows are holy for many Hindus and their slaughter is considered to be sinful.
Folk medicine.
Cow urine is used for attempted therapeutic purposes in ancient Ayurvedic medicine. Urine of a pregnant cow is considered special; it is claimed to contain special hormones and minerals. 
According to Ayurveda, Gomutra (cow urine) can cure leprosy, fever, peptic ulcer, liver ailments, kidney disorders, Asthma, certain allergies, skin problems like Psoriasis, anaemia and even cancer. One of India's largest Ayurvedic companies, Patanjali Ayurved, sells urine-based products.
Cow urine is also used in Myanmar and Nigeria as a folk medicine. In Nigeria, a concoction of leaves of tobacco, garlic and lemon basil juice, rock salt and cow urine is used in an attempt to treat convulsions in children. This has resulted in the death of several children from respiratory depression.
As a floor cleaner.
A floor-cleaning fluid called Gaunyle is marketed by an organisation called Holy Cow Foundation. Maneka Gandhi, Women and Child Development Minister, has proposed that Gaunyle be used instead of Phenyl in government offices. In May 2015, Rajendra Singh Rathore, Medical and Health Minister of Rajasthan, inaugurated a cow-urine refinery in Jalore. The refinery was set up by Parthvimeda Gau Pharma Pvt. Ltd. which produces a floor cleaner called Gocleaner.
In organic farming.
Gomutra is used as a manure for production of rice. Jeevamrutha is a fertilizer made from a mixture of cow urine, cow dung, jaggery, pulse flour and rhizosphere soil.
Diesel-Cow Urine Emulsion.
The cow-urine (gomutra) has also been used in various researches for the preparation of gomutra emulsified diesel for C.I. engine application. The results found with such a newly synthesized emulsion were quite satisfactory for diesel exhaust emissions and engine efficiency.
US Patents.
The United States Patent and Trademark Office (USPTO) has granted patents claiming novel uses for cow urine. These patents were granted to an Indian innovation which claims that cow urine can make antibiotics, anti-fungal agents and also anti-cancer drugs more effective. The patents are in the name of Council of Scientific and Industrial Research (CSIR), in collaboration with, Gau Vigyan Anusandhan Kendra. 
The USPTO does not recognise or validate the claims. The granting of patents only means that they recognise CSIR’s rights over them. The legitimacy of claims of medicinal properties and therapeutic benefits of cow urine is a debated issue. It is not patents but the results from animal studies and clinical trials in humans which would attest the effectiveness. There are no animal studies and human clinical trials and panchagavya ( cow dung, cow urine and cow milk) has not been rigorously tested even on cells lines (in vitro).
There are no peer-reviewed and endorsed scientific basis for the claimed medical benefits and thus these are categorized as pseudo-science.