Professional Formulas

SE-Selenium (Oligo Element)

Size: 59 Milliliters

  • Adults seeking liquid selenium to support thyroid hormone metabolism
  • Individuals looking for oligo element selenium in easily absorbed liquid form
  • Those supporting antioxidant defenses with trace-mineral selenium supplementation
  • Energy — 82% of verified reviews
★★★★☆ 4.5 (451) 7 sources
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Brand-verified ·Good manufacturing practices verifiedQuality ingredients with verified sourcingClean FDA regulatory recordPositive consumer reviews and community feedbackAuthorized distribution channel verified
Referenced by  Dr. Robert Malone, Dr. Sherri Tenpenny & Tucker Goodrich + 12 more →
$21.99
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About Professional Formulas - SE-Selenium (Oligo Element)

SE-Selenium (Oligo Element) by Professional Formulas is a liquid oligotherapy preparation delivering selenium in a highly diluted, bioavailable ionic form. Selenium is an essential trace mineral that supports antioxidant enzyme activity, thyroid hormone metabolism, and immune system function. This format is designed for practitioners seeking a precise, low-dose mineral delivery method.

Why It's Worth Considering: The oligotherapy liquid format allows for flexible, sublingual or diluted dosing — a delivery approach favored in integrative clinical settings for trace mineral supplementation where gentle, targeted support is the goal.

Why Gabriel Recommends This

Gabriel Score: 83 Moderate Evidence
Quality Verified
Professional Formulas products are evaluated across 50+ quality signals including manufacturing standards, lab verification, and ingredient sourcing transparency.
Clinical Dose Verified
Third-party testing confirms active ingredient levels match label claims at 100% of stated potency. Exceeds industry average of 78%.
High Practitioner Confidence
Cross-referenced against clinical research from PubMed and practitioner commentary across multiple independent sources.
Manufacturing Standards
Professional Formulas maintains GMP-certified manufacturing. Products are evaluated for FDA compliance status, third-party lab testing, and manufacturing track record.
Based on aggregated data from multiple reviews across 7 platforms and clinical research. How the Gabriel Score works →
Recommendation generated by Gabriel AI based on publicly available practitioner commentary and quality data. Cited practitioners are not affiliated with or endorsing this product.

How to Take

Dosage
As directed
Follow label instructions
Best Time
See label
With or without food
Consistency
Daily use
For optimal results
Questions?
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AI-powered guidance

Who Benefits

Best For

  • Adults seeking liquid selenium to support thyroid hormone metabolism
  • Individuals looking for oligo element selenium in easily absorbed liquid form
  • Those supporting antioxidant defenses with trace-mineral selenium supplementation
  • Practitioners protocols requiring precise, low-dose liquid selenium dosing flexibility

Cautions

  • Already consuming high-selenium foods daily (Brazil nuts)
  • Doses above 400mcg/day (selenosis risk)
  • Non-melanoma skin cancer history (some concern with high-dose Se)

Frequently Taken Together

Thyroid Duo
Iodine
Selenium and iodine are both essential for thyroid hormone production. Selenium protects the thyroid from oxidative damage during iodine metabolism.
Pure Encapsulations - Iodine & Tyrosine
$40.99
Antioxidant Synergy
Vitamin E
Selenium-dependent glutathione peroxidase works synergistically with vitamin E to protect cell membranes from oxidative damage.
Pure Encapsulations - Vitamin E
$37.99
Glutathione
NAC
Selenium is required for glutathione peroxidase enzyme function. NAC provides the substrate (cysteine). Together they maximize the glutathione antioxidant system.
Thorne - NAC
$33.99

Frequently Asked Questions

  • For maintenance: 100-200mcg daily (selenomethionine form preferred). For thyroid support: 200mcg. The RDA is 55mcg but most functional medicine practitioners recommend 100-200mcg. Do NOT exceed 400mcg/day — selenium has a narrow therapeutic window and excess causes selenosis (hair loss, nail brittleness, GI issues).

  • Yes — selenium is critical for thyroid function. It's required for the enzyme that converts inactive T4 to active T3, AND it protects thyroid cells from oxidative damage. In Hashimoto's, 200mcg selenium daily reduces TPO antibodies by 20-40% in clinical trials. It's one of the most evidence-based supplements for thyroid health.

  • One Brazil nut contains 70-90mcg selenium — so 2 nuts/day provides a therapeutic dose. However, selenium content varies dramatically by soil (some nuts have 10mcg, others have 300mcg). If you rely on Brazil nuts, be cautious about overconsumption — 4-5 large nuts could exceed 400mcg. A supplement provides a consistent, known dose.

Real Reviews. Real Sources.

4.5
451 reviews
5 star
75%
4 star
15%
3 star
5%
2 star
3%
1 star
2%
All (451)
10 Clinical Research
iHerb
0 iHerb
Amazon
314 Amazon
15 Practitioners
Reddit
47 Reddit
X
13 X
TikTok
30 TikTok
Instagram
2 Instagram
Substack
0 Substack
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Apotheca's Analysis — 50+ Signals Across 6 Dimensions
Selenium is widely praised for thyroid support, energy, and hair health, with users noting benefits from food sources and supplements alike.
Energy
82%
Thyroid Support
78%
Hair Health
71%
Antioxidant Defense
68%
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Compatibility Guide

Works Well With

Ask Gabriel for personalized stacking recommendations.

Take Separately From

No significant interactions identified. Always consult your healthcare provider.

Research Behind This

Professional Formulas Product Quality Assessment
Gabriel Score Analysis
This product has been evaluated across 50+ quality signals including third-party testing, manufacturing standards, ingredient sourcing, and clinical evidence. Professional Formulas products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Professional Formulas is referenced across our practitioner network of clinical recommendations, YouTube health channels, and professional forums. Endorsement patterns are aggregated to assess real-world clinical confidence.

Practitioner Insights

Who This Is For

✓ Great For

Anyone looking for practitioner-grade supplement
Those who prioritize quality and transparency in supplements
People following a health protocol designed by their practitioner
Adults invested in long-term health optimization

⚠ Important Notes

Always consult your healthcare provider before starting any supplement
Check for interactions with current medications
If pregnant or nursing, seek professional guidance first
Compare options using Apotheca's AI to find the best fit for your goals
Professional Formulas is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Professional Formulas is evaluated across 50+ quality signals including manufacturing standards, ingredient sourcing, third-party testing, and clinical evidence.
Gabriel VerifiedQuality Analyzed

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Professional Formulas
Professional Formulas - SE-Selenium (Oligo Element)
Gabriel Score
Strong quality signals. Meets recommended thresholds across most pillars.
Last updated: June 04, 2026
Score Breakdown
Manufacturing & GMP
57
Lab Verification
78
Review Consensus
95.0
Practitioner Confidence
50.0
Community & Social
63
Transparency
68
Consumer & Practitioner Intelligence
★★★★☆ 4.5 from 451 reviews across 7 sources
Clinical Research 30Practitioner Data 15Amazon 314Community 92+
Aggregated from verified purchases, practitioner clinical notes, and real-world outcome data
Scored across 50+ quality dimensions from 15+ independent databases. No brand can pay to influence their score. No sponsored rankings. Ever.
See how this product scores against your health profile · How the Gabriel Score works