Does this contain L-selenomethionine or the DL form?

Yes, selenomethionine is verified using USP methodologies. Thorne Research uses inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS) to analyze each incoming batch of L-selenomethionine used in this product. SOPs are in compliance with USP standards. Clean Break Seller · March 4, 2015

IS this verified by USP?

Yes, selenomethionine is verified using USP methodologies. Thorne Research uses inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS) to analyze each incoming batch of L-selenomethionine used in this product. SOPs are in compliance with USP standards.

Is this product yeast-free?

Yes. Though I switched from this brand to "NOW" at 100 mcg (take 2 instead) and it states on the front of the bottle "Yeast Free".

From what source is this seleniomethionine?

I don't know. But recommended by a certified nutritionist.

Thorne Serene Supplement, 200 mcg, Mineral Supplement, 60 Capsules, Set of 1 [Total 60 Capsules/60 Day Supply]

Thorne Serene Supplement, 200 mcg, Mineral Supplement, 60 Capsules, Set of 1 [Total 60 Capsules/60 Day Supply]

Product ID: 725796299

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Details

Brand
THORNE
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Capsule
Item Weight
0.04 Pounds
Material Type Free
No artificial

🌿Gluten, soy, dairy & allergen-free

⚖️200 mcg pure selenium per capsule

🗓️60-day supply, 1 capsule daily

Description

⚡ Elevate your thyroid game with clean, clinical-grade selenium!

BEAUTY FROM WITHIN - Promotes healthy skin and hair, so you look as vibrant as you feel.
THYROID POWERHOUSE - Supports optimal thyroid function for sustained energy and metabolism balance.
PURE CLEAN FORMULA - Crafted without gluten, soy, dairy, or major allergens—clean nutrition you can trust.
DAILY WELLNESS RITUAL - One capsule a day keeps your thyroid and skin glowing—simple, effective, essential.
ELITE TRUSTED QUALITY - Backed by Mayo Clinic partnership and trusted by 100+ pro teams—performance-grade supplement.

Thorne Serene Supplement delivers 200 mcg of pure selenium per capsule in a clean, allergen-free formula designed to support thyroid health, skin vitality, and overall wellness. With a 60-day supply and trusted clinical partnerships, it’s the go-to choice for professionals seeking reliable, daily nutritional support.

Specifications

ASIN	B00B5N9IDQ
Age Range Description	Adult
Amazon Bestseller	#111,539 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #3 in Selenium Mineral Supplements
Brand	THORNE
Brand Name	THORNE
Customer Reviews	4.7 out of 5 stars 4,107 Your Review
Diet Type	Gluten Free
Flavor	Unflavored
Item Form	Capsule
Item Weight	0.04 Pounds
Manufacturer	Thorne Research
Manufacturer Part Number	M225
Material Type Free	No artificial fragrance, soy-free, gluten-free, and dairy-free
Model Number	M225-R
Number of Items	1
Primary Supplement Type	Selenium
Product Benefits	Liver & Detox Thyroid
UPC	693749225010
Unit Count	60.00 粒

Reviews

A**R

Good quality

5.01.2026

C**N

calidad producto

Entregado en plazo

5.09.2025

D**�

Great Quality Selenium – Trusted Brand!

24.07.2025

A**Z

Great product

3.03.2026

C**N

Good quality

2.10.2025

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