v3.26.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 27, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 000-52369    
Entity Registrant Name FITLIFE BRANDS, INC.    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 20-3464383    
Entity Address, Address Line One 5214 S. 136th Street    
Entity Address, City or Town Omaha    
Entity Address, State or Province NE    
Entity Address, Postal Zip Code 68137    
City Area Code 402    
Local Phone Number 991-5618    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol FTLF    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 50,749,000
Entity Common Stock, Shares Outstanding (in shares)   9,391,072  
Auditor Firm ID 572    
Auditor Name Weinberg & Company, P.A.    
Auditor Location Los Angeles, California    
Entity Central Index Key 0001374328    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false