Question 1

What is the difference between Iron and Selenium?

Accepted Answer

Iron is classified as a Essential nutrient, Neurotransmitter cofactor (Transition metal, Essential trace element) while Selenium is classified as a Essential nutrient, Neuroprotective, Thyroid support (Metalloid, Essential trace element). They share 1 effects in common, with 4 effects unique to Iron and 1 unique to Selenium.

Question 2

Is it safe to combine Iron and Selenium?

Accepted Answer

There is no direct interaction data available for combining Iron and Selenium. This does not mean the combination is safe. Always exercise caution and research thoroughly.

Question 3

Which is stronger, Iron or Selenium?

Accepted Answer

At common doses via oral, Iron is typically dosed at 18–30 mg (elemental) while Selenium is dosed at 55–200 mcg. However, "stronger" depends on context — potency, subjective intensity, and duration all factor in. These substances have different pharmacological profiles and comparing raw potency is not straightforward.

	Iron	Selenium
Class	Essential nutrient, Neurotransmitter cofactor	Essential nutrient, Neuroprotective, Thyroid support
Common Dose (oral)	18–30 mg (elemental)	55–200 mcg
Total Duration	0.6–2.4 hrs	1.2–4.8 hrs
Routes	Oral	Oral

Level	Iron	Selenium
Threshold	4.8 mg (elemental)	15 mcg
Light	8–18 mg (elemental)	25–55 mcg
Common	18–30 mg (elemental)	55–200 mcg
Strong	30–65 mg (elemental)	200–400 mcg
Heavy	100 mg (elemental)	600 mcg

IronvsSelenium

At a Glance

Dosage

oral

Duration

oral

Oral

Oral

Effects

Shared Effects1

Unique to Iron4

Unique to Selenium1

Safety

Interaction: Iron + Selenium

Iron — Dangerous Interactions

Selenium — Dangerous Interactions

Frequently Asked Questions