Selenium Supplements: Forms, Labels & Evidence

Q: Does ingredient research prove the complete formula works?

NIH discusses the importance of baseline selenium status and uncertainty in several supplementation applications. Evidence from deficient populations or a specific selenium form cannot be applied automatically to an already adequate intake or a multi-ingredient formula.

Q: What should I discuss before considering selenium?

Excess selenium can itself cause hair and nail changes, digestive effects and other problems. Count all selenium products and high-selenium foods in the discussion. People receiving cancer treatment should review supplements with their treatment team.

Compare the exact preparation and labeled serving

The checked Cataplex E serving contains selenium alongside vitamin E. Immuplex combines selenium with zinc, iron, vitamins and a proprietary blend. Trace Minerals-B12 is not used as a selenium match because its inspected panel does not declare selenium.

The amounts below reproduce the inspected manufacturer online panel. They describe labeled servings, not an individualized regimen. Confirm your selected package and review the full ingredient list and dietary attributes on the product page.

Declared manufacturer amounts checked October 14, 2026; compare the exact selected package
Product	Declared serving facts	Important distinction
Cataplex® EView product →	Declared serving factsEach Serving Size (2 Tablets) contains: Vitamin E 3.3 mg, Selenium 11 mcg. Proprietary Blend 510 mg: Bovine orchic extract, inositol, organic pea vine juice powder, ribonucleic acid, bovine adrenal, organic beet (root), organic oat flour, bovine spleen, ovine spleen, bovine liver, manganese lactate, and ascorbic acid.	Important distinctionRecorded dietary attributes: Not vegetarian; Not vegan. Read the complete Cataplex® E ingredient list and current package. The serving facts describe this formula; a shared ingredient does not make it equivalent to another product.
Immuplex®View product →	Declared serving factsEach Serving Size (2 Capsules) contains: Cholesterol <5 mg, Vitamin A 300 mcg RAE, Vitamin C 54 mg, Vitamin E 4.9 mg, Vitamin B6 2 mg, Folate (200 mcg folic acid) 335 mcg DFE, Vitamin B12 2 mcg, Iron 5 mg, Zinc 9 mg, Selenium 6 mcg, Copper 0.2 mg, Chromium 30 mcg, Sodium 60 mg. Proprietary Blend 545 mg: Bovine liver PMG™ extract, veal bone PMG™ extract, nutritional yeast, bovine spleen PMG™ extract, bovine thymus PMG™ extract, bovine thymus Cytosol™ extract, bovine liver, bovine spleen, and ovine spleen.	Important distinctionRead the complete Immuplex® ingredient list and current package. The serving facts describe this formula; a shared ingredient does not make it equivalent to another product.

References: WSNC Cataplex® E recorded label details ↗ · WSNC Immuplex® recorded label details ↗ · Selenium - Health Professional Fact Sheet ↗

What the ingredient evidence can establish

Selenium is required for selenoproteins involved in thyroid hormone metabolism and antioxidant systems. Those normal functions do not prove that extra selenium prevents cancer or improves thyroid symptoms in every person.

NIH discusses the importance of baseline selenium status and uncertainty in several supplementation applications. Evidence from deficient populations or a specific selenium form cannot be applied automatically to an already adequate intake or a multi-ingredient formula.

References: Selenium - Health Professional Fact Sheet ↗

Review suitability, medicines and the whole formula

Excess selenium can itself cause hair and nail changes, digestive effects and other problems. Count all selenium products and high-selenium foods in the discussion. People receiving cancer treatment should review supplements with their treatment team.

Establish the dietary or clinical reason for selenium before comparing formulas. Keep micrograms, labeled serving and overlapping vitamins or minerals visible together.

References: WSNC Cataplex® E recorded label details ↗ · WSNC Immuplex® recorded label details ↗ · Selenium - Health Professional Fact Sheet ↗

Prepare a focused practitioner conversation

Bring the selected label, your reason for considering selenium, and a list of medicines and other supplements. Compare the intended outcome with the specific preparation studied, and agree how suitability and any benefit will be assessed.

Manufacturer suggested-use text checked for these products: Cataplex® E: Two tablets per meal, or as directed. Immuplex®: Two capsules per meal, or as directed. Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately. Warning: Keep out of reach of children.

These are separate product instructions, not one combined supplement schedule. Keep the current package directions with your practitioner plan; ingredient research does not override manufacturer labeling.

References: WSNC Cataplex® E recorded label details ↗ · WSNC Immuplex® recorded label details ↗ · Selenium - Health Professional Fact Sheet ↗

Protocol label reading

These kits contain a product compared in this guide. That ingredient match does not establish effects for the complete kit or individual suitability. Review all components with your practitioner.

Common questions

How should I compare selenium supplement labels?

The checked Cataplex E serving contains selenium alongside vitamin E. Immuplex combines selenium with zinc, iron, vitamins and a proprietary blend. Trace Minerals-B12 is not used as a selenium match because its inspected panel does not declare selenium.

Does ingredient research prove the complete formula works?

NIH discusses the importance of baseline selenium status and uncertainty in several supplementation applications. Evidence from deficient populations or a specific selenium form cannot be applied automatically to an already adequate intake or a multi-ingredient formula.

What should I discuss before considering selenium?

Excess selenium can itself cause hair and nail changes, digestive effects and other problems. Count all selenium products and high-selenium foods in the discussion. People receiving cancer treatment should review supplements with their treatment team.

Evidence and product label sources

WSNC label links below present recorded Standard Process product information on our site. Noncommercial references explain ingredients, evidence limits and safety; they do not verify every formula amount or establish a treatment outcome for a finished product or protocol. The referenced organizations do not endorse this store.

Manufacturer nutrition-panel amounts shown here were checked October 14, 2026. Confirm the current packaging, directions and dietary information before use. Your healthcare practitioner can help assess individual suitability.

How we research products → · Prepare a practitioner conversation →