Nature’s Plus SPIRU-TEIN supplement bottle
Nature’s Plus

SPIRU-TEIN

What We Researched
22 active ingredients analyzed · 36 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
58
Product Score Poor

Product Analysis

Transparency Very Poor

Supplement Facts

IngredientAmount% DV
Vitamin A 5000 IU 100%
Vitamin C 60 mg 100%
Calcium 300 mg 30%
Iron 4.5 mg 25%
Vitamin D 400 IU 100%
Vitamin E 30 IU 100%
Thiamin 1.5 mg 100%
Riboflavin 1.7 mg 100%
Niacin 20 mg 100%
Vitamin B6 2 mg 100%
Folic Acid 400 mcg 100%
Vitamin B12 6 mcg 100%
Biotin 300 mcg 100%
Pantothenic Acid 10 mg 100%
Phosphorus 200 mg 20%
Iodine 150 mcg 100%
Magnesium 80 mg 20%
Zinc 15 mg 100%
Selenium 21 mcg 30%
Manganese 2 mg 100%
Chromium 18 mcg 15%
Molybdenum 20 mcg 25%
Bioavailability Very Good

Absorption Rating

  • Vitamin A Good
  • Vitamin C Fair
  • Calcium Good
  • Iron Fair
  • Vitamin D Good
  • Vitamin E Good
  • Thiamin Good
  • Riboflavin Good
  • Niacin Good
  • Vitamin B6 Fair
  • Folic Acid Fair
  • Vitamin B12 Fair
  • Biotin Good
  • Pantothenic Acid Good
  • Phosphorus Good
  • Iodine Good
  • Magnesium Good
  • Zinc Fair
  • Selenium Good
  • Manganese Good
  • Chromium Fair
  • Molybdenum Good
Other Ingredients Excellent

Fillers & Additives

  • Proprietary non-GMO protein blend (rice protein, pea protein and soy [isolated soy protein and fermented soy])
  • Fructose
  • Non-GMO Maltodextrin
  • Natural Flavors
  • Xanthan Gum
  • Potassium Citrate
  • Magnesium Oxide
  • Guar Gum
  • Spirulina
  • Sunflower Oil
  • Lecithin
  • Vitamin E (d-alpha tocopheryl acetate)
  • Choline Bitartrate
  • Inositol
  • Apple Pectin
  • Bee pollen
  • Niacinamide
  • Vitamin A Palmitate
  • Zinc Oxide
  • Ferrous Fumarate Low
  • Calcium Pantothenate
  • Lecithin
  • Lemon Bioflavonoids
  • Papaya
  • Bromelain
  • Riboflavin
  • Pyridoxine HCl
  • Thiamine HCl
  • Vitamin B12
  • Vitamin D
  • Folic Acid
  • Biotin
  • Potassium Iodide
  • Chromium Chloride
  • Sodium Selenite
  • Sodium Molybdate
Efficacy Fair

Dosage Analysis

  • Vitamin A 5000 IU Under-dosed
  • Vitamin C 60 mg Under-dosed
  • Calcium 300 mg Under-dosed
  • Iron 4.5 mg Under-dosed
  • Vitamin D 400 IU Under-dosed
  • Vitamin E 30 IU Effective
  • Thiamin 1.5 mg Effective
  • Riboflavin 1.7 mg Effective
  • Niacin 20 mg Effective
  • Vitamin B6 2 mg Effective
  • Folic Acid 400 mcg Effective
  • Vitamin B12 6 mcg Effective
  • Biotin 300 mcg Effective
  • Pantothenic Acid 10 mg Effective
  • Phosphorus 200 mg Under-dosed
  • Iodine 150 mcg Effective
  • Magnesium 80 mg Under-dosed
  • Zinc 15 mg Effective
  • Selenium 21 mcg Under-dosed
  • Manganese 2 mg Effective
  • Chromium 18 mcg Under-dosed
  • Molybdenum 20 mcg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A 5000 IU 100%
Vitamin C 60 mg 100%
Calcium 300 mg 30%
Iron 4.5 mg 25%
Vitamin D 400 IU 100%
Vitamin E 30 IU 100%
Thiamin 1.5 mg 100%
Riboflavin 1.7 mg 100%
Niacin 20 mg 100%
Vitamin B6 2 mg 100%
Folic Acid 400 mcg 100%
Vitamin B12 6 mcg 100%
Biotin 300 mcg 100%
Pantothenic Acid 10 mg 100%
Phosphorus 200 mg 20%
Iodine 150 mcg 100%
Magnesium 80 mg 20%
Zinc 15 mg 100%
Selenium 21 mcg 30%
Manganese 2 mg 100%
Chromium 18 mcg 15%
Molybdenum 20 mcg 25%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Proprietary non-GMO protein blend (rice protein, pea protein and soy [isolated soy protein and fermented soy]) Unknown
Fructose Generally_safe

It is used as a sweetener.

Non-GMO Maltodextrin Generally_safe

It is used as a filler or binder to add bulk and improve flow.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Xanthan Gum Safe

Thickens and stabilizes liquid and semi-solid supplements.

Potassium Citrate Safe

It is used as a mineral supplement and buffer.

Magnesium Oxide Generally_safe

It is used to provide magnesium, an essential mineral.

Guar Gum Safe

Thickens and provides fiber in supplement formulations.

Spirulina Generally_safe

It is used to impart a blue or green color.

Sunflower Oil Safe

Helps dissolve and absorb fat-soluble vitamins.

Lecithin Safe

It is used as an emulsifier to help mix oil and water-based ingredients.

Vitamin E (d-alpha tocopheryl acetate) Unknown
Choline Bitartrate Generally_safe

It is used to supplement choline intake.

Inositol Safe

It is used for its potential benefits related to cell signaling and mental health.

Apple Pectin Safe

It is used as a thickening agent or gelling agent.

Bee pollen Unknown
Niacinamide Safe

It is included for its potential health benefits.

Vitamin A Palmitate Generally_safe

It is added to supplements as a source of vitamin A.

Zinc Oxide Generally_safe

It is used as a source of zinc.

Ferrous Fumarate Caution

It is used to supplement iron intake.

Calcium Pantothenate Safe

It provides a source of vitamin B5.

Lecithin Safe

It is used as an emulsifier to help mix oil and water-based ingredients.

Lemon Bioflavonoids Generally_safe

They are added for their antioxidant properties.

Papaya Safe

It may be included for its digestive enzymes or nutritional content.

Bromelain Generally_safe
Riboflavin Safe

It is used as a source of vitamin B2.

Pyridoxine HCl Generally_safe

It is used as a source of vitamin B6.

Thiamine HCl Safe

It is used as a source of vitamin B1.

Vitamin B12 Safe

It is included for its nutritional value.

Vitamin D Safe
Folic Acid Safe

It is used as a source of folate.

Biotin Safe

It is used for its potential benefits related to hair, skin, and nail health.

Potassium Iodide Generally_safe

It provides iodine, an essential mineral.

Chromium Chloride Generally_safe

It is added to supplements to provide chromium, an essential trace mineral.

Sodium Selenite Generally_safe

It is added to supplements to provide selenium, an essential trace mineral.

Sodium Molybdate Generally_safe

It is used to supplement molybdenum intake.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
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Frequently Asked Questions
Is Nature’s Plus SPIRU-TEIN a good supplement?

Nature’s Plus SPIRU-TEIN received a product quality score of 58/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 22 active ingredients Of the 36 inactive ingredients, 18 are rated safe and 1 are flagged for review.

What are the ingredients in Nature’s Plus SPIRU-TEIN?

Nature’s Plus SPIRU-TEIN contains 22 active ingredients: Vitamin A (5000 IU), Vitamin C (60 mg), Calcium (300 mg), Iron (4.5 mg), Vitamin D (400 IU), Vitamin E (30 IU), and 16 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature’s Plus SPIRU-TEIN safe to take?

Nature’s Plus SPIRU-TEIN has been analyzed for ingredient safety across all its components. Of 36 inactive ingredients, 18 are rated safe. 1 ingredient is flagged for review: Ferrous Fumarate. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.