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A female asked:

i took theraflu severe cold at 3pm and its now 7pm. can i take regular sudafed now?

2 doctor answers3 doctors weighed in
Dr. Andrey Lev-weissberg
Internal Medicine 18 years experience
Should be ok: Theraflu usually contains phenylephrine which has a short half life. Could use saudafed which has a long half life. A word of caution though as decongestants can increase your heart rate and blood pressure so consult your doctor if u think u may have a heart condition or glaucoma
Dr. Steven Saunders
Internal Medicine 43 years experience
Theraflu: Always read directions. Both should not be taken at the same time, however it is likely ok to take Sudafed if you have passed the time for the next scheduled dose of Theraflu. Choose one or the other to treat your symptoms.

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A 29-year-old member asked:

Can I take the pseudoephedrine that is behind the pharmacy counter, or is that too strong of a dose?

3 doctor answers3 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctor answered
A US doctor answered Learn more
No: I would stick to the over-the-counter pseudoephedrine.
CA
A 44-year-old member asked:

Are there any good effects of pseudoephedrine?

2 doctor answers2 doctors weighed in
Dr. Stephen Kimura
Allergy and Immunology 35 years experience
Yes: You are correct Pseudoephedrine has lots of side effects, such as shakiness, anorexia, palpitations and increased blood pressure. It is a very good decongestant though, and has been available for years in many prescription products such as Claritin (loratadine) d, zyrtec d, allergra d etc.
A 36-year-old member asked:

What are the side effects of pseudoephedrine?

1 doctor answer1 doctor weighed in
Dr. Jennifer Judkins
ENT and Head and Neck Surgery 29 years experience
Vasocontrictor: Pseudophedrine is a vasoconstrictor. This means it has the ability to temporarily narrow blood vessels. Taken orally this can cause dizziness, rapid heart rate (palpitations) or headache.
A 42-year-old member asked:

Side effects of sudafed?

1 doctor answer2 doctors weighed in
Dr. Bryan Levey
Pediatrics 27 years experience
Many: Possible side effects include fast or irregular heart beats, tremor, restlessness, insomnia, nausea, vomiting, feeling nervous, high blood pressure, and more.
A 38-year-old member asked:

What would happen if you took sudafed when you were not sick?

1 doctor answer2 doctors weighed in
Dr. Dennis Clifford
A Verified Doctor answered
A US doctor answered Learn more
Dry mouth: Nothing bad is going to happen, but your mouth is likely to get dry and you may get a rapid heart rate for a while.

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Last updated May 13, 2015

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