soy protein

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(soi) ,

glycine max

(trade name),

soy protein

(trade name),


(trade name)


Therapeutic: antioxidants
Menopausal symptoms.Prevention of breast, lung, endometrial, thyroid and prostate cancers.Hyperlipidemia.


Soy is the most significant dietary source of isoflavones. Pharmacologic effects of soy include lowering of homocysteine levels, inhibition of platelet aggregation, lowering of blood pressure, inhibition of cholesterol absorption in the small bowel and lowering of LDL cholesterol. Soy isoflavones also have antioxidant, antiproliferative and estrogenic effects.

Therapeutic effects

Decreased cholesterol.
Decreased hot flashes in menopausal women.


Absorption: Unknown
Distribution: Unknown
Metabolism and Excretion: Unknown
Half-life: Unknown

Time/action profile



Contraindicated in: Hypersensitivity.End stage renal disease.Urinary bladder cancer (may increase risk).
Use Cautiously in: Nephrolithiasis.Hypothyroidism.

Adverse Reactions/Side Effects


  • insomnia


  • bloating
  • constipation
  • gastrointestinal upset


Antibiotics may ↓ effects of soy. May inhibit effects of estrogens and tamoxifen.May ↑ risk of hypertensive crisis with MAO inhibitors.May ↓ INR of patients taking warfarin. None.
Oral (Adults) 35–120 mg/day.


Tablets: Powder:

Nursing implications

Nursing assessment

  • Monitor blood pressure prior to and periodically during therapy.
  • Hypercholesterolemia: Obtain a diet history, especially with regard to fat consumption.
  • Menopausal symptoms: Assess the frequency and intensity of hot flashes prior to and periodically during therapy.
  • Lab Test Considerations: Monitor blood glucose, lipid profile, hormones, and thyroid function before and periodically during therapy.

Potential Nursing Diagnoses

Deficient knowledge, related to diet and medication regimen (Patient/Family Teaching)


  • Oral: Administer as directed.

Patient/Family Teaching

  • Instruct patient to take as directed.
  • Instruct patient to notify health care professional of all Rx or OTC medications, vitamins, or herbal products being taken and to consult with health care professional before taking other medications.

Evaluation/Desired Outcomes

  • Decrease in frequency and intensity of hot flashes.
  • Reduction in serum cholesterol levels.

soy protein

A type of vegetable protein found in food products derived from soybeans. Soy-based foods also contain fiber, flavones, phytoestrogens, and other potentially beneficial components. See: soy milk; tofu
See also: protein
References in periodicals archive ?
The report: Soy Protein Ingredients Market (Soy Isolates, Soy Flour, Concentrates) Market by Types, Applications and Geography--Global Trends and Forecasts up to 2017 was published in October 2012, 231 pages, priced at US$4,650.
However, there was a little improvement of about 13 percent in the visual memory, or facial recognition in the soy protein group as compared to the milk protein group.
Soy protein is a high quality, plant-based protein that's comparable with meat, dairy and eggs.
In the late 1970s and early 1980s, the soy protein hypothesis was greatly strengthened as a result of studies that found that diets high in soy protein, replacing nearly all the animal protein, substantially reduced blood LDL cholesterol by 20 to 30 percent in severe hypercholesterolemia.
The scientists used soy protein isolates and high methoxy pectin (HMP) to prepare stock solutions containing 3% isolate, and 1% and 2% HMP.
But why was there a difference between soy protein and soy nuts?
Toyobo will release new products made from the soy protein fiber yarn from the spring/summer season of 2006.
Before curing, the soy protein used in the wood adhesive is nonvolatile, is not a hazardous air pollutant, and may be handled with basic protective gear such as gloves and safety glasses, according to the United Soybean Board's "Soy-Based Wood Adhesives and the Environment" information sheet.
More than one-third knew that consumption of 25 grams of soy protein a day can help reduce risk of coronary heart disease.
The Alpha product line is a major breakthrough in soy protein ingredient technology," said Jim McCarthy, Group Vice President-Specialty Products.
And the FDA approved a health claim only for soy protein, not for the isoflavones that are found in soy.
In approving health claims for soy on food labels, the FDA differentiated between soy protein, where the benefits are backed by dozens of clinical trials, and soy isoflavones, where debate continues.