Cover - shares	3 Months Ended
	Mar. 31, 2022	May 04, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Entity File Number	0-22923
Entity Registrant Name	INTERNATIONAL ISOTOPES INC.
Entity Central Index Key	0001038277
Entity Tax Identification Number	74-2763837
Entity Incorporation, State or Country Code	TX
Entity Address, Address Line One	4137 Commerce Circle
Entity Address, City or Town	Idaho Falls
Entity Address, State or Province	ID
Entity Address, Postal Zip Code	83401
City Area Code	(208)
Local Phone Number	524-5300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		506,289,408