soy protein

(redirected from Soy protein isolate)
Also found in: Acronyms.


(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 ?
Effect of high pressure treatment on aggregation and structural properties of soy protein isolate.
Cedar Rapids, Iowa) along with commercial soy concentrate ARCON AF (ADM, Decatur, Illinois) and commercial soy protein isolate PRO-FAM 974 (ADM).
Soy Protein Isolate solution was produced by dispersing 8g of soy protein powder in that solution and stirred about 15minutes in a water bath at 90[degrees]C.
Stimulatory influence of soy protein isolate on breast secretion in pre- and postmenopausal women.
adding, "Our new CLARISOY soy protein isolate product and the associated extraction technology offer another major platform for Burcon to earn revenue and to pursue future opportunities.
The presence of carcinogens like lysinoalanine and nitrites meant that soy protein isolate wouldn't earn safety status as anything but a sealant.
Most of the vegan dogs that we found are based on some form of soy, typically soy protein isolate.
Boue and his SRRC colleagues also produced a soy protein isolate from their induced soybeans.
Zein and soy protein isolate (SPI) film-forming solutions were prepared by dissolving zein and SPI in 95% ethanol and distilled water, respectively.
But in one study ingestion of a soy protein isolate for 1 year led to stimulation of nipple aspirate fluid volume in premenopausal women (Cancer Epidemiol.
In one study, ingestion of a soy protein isolate for 1 year stimulated nipple aspirate fluid volume in pre-menopausal women (Cancer Epidemiol.
The products in question include Nestle Cerelac mixed vegetables, Ensure Complete and Isomil Infant Formula produced by Abbott Laboratories, and Prosobee Medical Food Milk Free Instant Formula with soy protein isolate produced by Mead Johnson, Greenpeace said.