Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2025	Nov. 11, 2025
Cover [Abstract]
Entity Registrant Name	MEDICUS PHARMA LTD.
Entity Central Index Key	0001997296
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-42408
Document Period End Date	Sep. 30, 2025
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2025
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		22,029,144
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Amendment Flag	false
Entity Shell Company	false
Entity Address, Address Line One	300 Conshohocken State Rd., Suite 200
Entity Address, City or Town	W. Conshohocken
City Area Code	610
Local Phone Number	636-0184
Entity Address, State or Province	PA
Entity Interactive Data Current	Yes
Entity Tax Identification Number	98-1778211
Entity Incorporation, State or Country Code	A6
Entity Address, Postal Zip Code	19428
Title of 12(g) Security	Common shares, no par value
Trading Symbol	MDCX
Security Exchange Name	NASDAQ
Entity Ex Transition Period	false