
Some of the information on this page is courtesy of Lauren Novasitis, RD and Braintree Laboratories (Publisher of the news letter "RD'S CORNER." Modified for patient consumption. |
Herbal therapies have become a popular form of self care for many people of all ages. There are herbal remedies advertised for everything ranging from common cold to cancer.
Herbs are defined in several ways depending on the context in which the word is used. Herbs can be accurately defined as, "crude drugs of vegetable origin utilized for the treatment of disease states, often of a chronic nature, or to attain or maintain a condition of improved health."
Since they are nothing but crude drugs, contrary to the common belief, they do have risks and side effects as do the more refined 'drugs'. Since herbal medications are not subjected to same stringent regulations, approval and monitoring by the FDA, their product information may be inadequate.
There is little or no information pertaining to the safety and efficacy of herbal therapy for the kidney disease or other diseases in the presence of poorly functioning kidneys. The following questions remain unanswered:
*How much potassium,
phosphorus, sodium and other deleterious minerals
and unknown toxins are present?
*How are they
digested
to be absorbed as various chemicals by the body?
*How are they
metabolized?
*How are they
ultimately disposed off by the body and does it require
normal kidney function to dispose them of?
*Do they come out of
the body during Dialysis?
*Or due to poor kidney
function and / or by not being cleared by dialysis,
do they build up to toxic level and
create other complications?
A specific example of concerns relates to the group of herbs classified as diuretics. In reality, the classic herbal diuretic drugs are not diuretics, but are more accurately defined as aquaretics. They increase the volume of urine by increasing blood flow in the kidneys, thereby raising glomerular filtration rate. (Forcefully increasing the glomerular filtration rate itself is deleterious to the kidneys in the long run.) Unlike the more commonly prescribed diuretics, they do not reduce the salt (and other electrolytes) absorption by the kidneys to increase the volume of the urine. Therefore, salt and other electrolytes are retained in the body and are not eliminated from the body. This means that herbal 'diuretics' are not really suited for the treatment of edema (swelling due to salt and water retention) or high blood pressure (hypertension) especially in the presence of kidney disease.
Some of the Herbal Medications used by patients for various symptoms and their possible side effects are:
| Herbal Medication | Comments |
Used by the patients for |
| Ginseng | Severe side effects are rare. Mild side effects include headache, insomnia, anxiety and diarrhea. | Anemia Loss of appetite |
| Nettle | Minimal side effects, mostly in the form of nausea, vomiting, abdominal cramps and aches and occasionally diarrhea | Anemia |
| Dandelion | No documented side effects. Unknown side effects may exist. | Anemia High Blood Pressure |
| Cayenne | A very strong irritant esp to the eyes. May cause heartburn and stomach ache. | Loss
of appetite
|
| Ginger | Generally regarded as safe. | Loss of appetite Nausea |
| Fennel | ? No side effects | |
| Cascara | Generally regarded as safe. Non-habit forming. No significant side effects. | |
| Chamomile | Generally regarded as safe. | Constipation Dry skin |
| Licorice | Could be dangerous due to salt retention, water retention causing swelling. Also may cause excessive loss of potassium and consequently irregular heart beats. | Constipation Depression |
| Aloe | Could cause various electrolyte (salts like sodium, potassium etc) imbalance. May interfere with absorption of other medications. May cause cramps and diarrhea. | Constipation |
| St Johns Wart | Could cause stomach upset and excessive skin sensitivity to Sun light and fluorescent light | Depression |
| Parsley | Acts as an irritant to the cells of the kidney. Not advisable for those with kidney disease. | Fluid
retention Swelling |
| Plantain | Generally safe. Due to high potassium concentration could be dangerous, esp for those who are on potassium restricted diet. | Fluid
retention Swelling |
| Gingko Leaf | Minimal side effects. May cause head aches and stomach upset. | High Blood Pressure |
| Garlic | Moderate amount do not pose a health risk. May interfere with blood thinners. | Kidney
infection Heart disease |
| Comfrey | Can be very toxic. Internal use should be avoided. Has little or no place in modern medicine |
Malnutrition |