3 doctors weighed in:
I overdosed on entex yesterday; how long does it stay in my system?
3 doctors weighed in

Dr. Bac Nguyen
Family Medicine
2 doctors agree
In brief: Depending on amount
I certainly hope you just took a bit more than what is recommended and not intentional od.
Anyhow, entex has 2 meds in it and phenylnephrine has half-life of about 3 hours (time it takes for 1/2 to disappear from your body). Usually there is much left after 5-6 half-lives (15-18hours). If you have bad symptoms, please consult doc. Becareful using any med; some can have devastating consequences. Good luck.

In brief: Depending on amount
I certainly hope you just took a bit more than what is recommended and not intentional od.
Anyhow, entex has 2 meds in it and phenylnephrine has half-life of about 3 hours (time it takes for 1/2 to disappear from your body). Usually there is much left after 5-6 half-lives (15-18hours). If you have bad symptoms, please consult doc. Becareful using any med; some can have devastating consequences. Good luck.
Dr. Bac Nguyen
Dr. Bac Nguyen
Thank
Read more answers from doctors