What is the half life of Sudafed?

Posted on Thu, 2 Mar 2017 in General Health
Question: Hi I just wanted to know if sudafed ever stops working?
Answered by Dr. Naveen Kumar 3 hours later
Brief Answer:
Sudafed has a very short half life...

Detailed Answer:

Thanks for posting the query

The effect of Sudafed is short stayed. The half life of this drug is somewhere between 4-6 hours. Hence, any side effects following ingestion of this drug completely weans off within a day or two.

If there is dryness of the nose or hot flushes following usage of this medicine, you need to drink lots of water and use saline nasal spray as and when required.

Hope this answers your query. I will be available for any follow up questions.

Dr. Naveen Kumar N
ENT and Head & Neck Surgeon
Above answer was peer-reviewed by : Dr. Nagamani Ng
Answered by
Dr. Naveen Kumar

ENT Specialist

Practicing since :2001

Answered : 2434 Questions


The User accepted the expert's answer

Share on
Question is related to
Medical Topics

Recent questions on  Nasal spray

doctor1 MD

I am a 71 yo male retired veterinarian weigh 210 and 6 1 tall. I had a nasty nasty cold and sinusitis(treated with Z-pack and fluticasone nasal...

doctor1 MD

I have had catarrh for 3 months nothing seems to clear it. I have had 2 antibiotics nasal spray without success. I am now trying hot steam and...

doctor1 MD

dr gave me a nasal steriod spray for a on and off blocked eustachian tube i got after a bad cold. heard my voice in my head etc. i thnk its a...

doctor1 MD

Hi, my 14 year old has been suffering from headaches for almost a year now. He had a ct scan done and the doctor said they found that the adenoid...

doctor1 MD

Hi Doctor, My wife is 23 weeks now, she gets allergic rhinitis often during winter (Nov, Dec) and her nose gets blocked. She has started taking...

doctor1 MD

Hello Sir/Mam, My self XXXXXXX XXXX and i m 29 yrs old.I m accountant by profession.from last 1 yr i m suffering from Sinus problem.I DAILY FEEL...

doctor1 MD

I am suffering from consistent cold from the last 5 years. Some years back I have taken treatment from a hemeaopathic doctor, and he suggested that...

Get personalised answers from verified doctor in minutes across 80+ specialties

165 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction