18 Oct 2009
How long a drug stays in your system is a very difficult question to answer. It is dependant on many factors e.g.
1. How much and how often you have taken the drug.
2. Your metabolic rate – a slower metabolism will increase the time a drug remains in your system.
3. Your age and health – older age and poor health will generally increase the time the drug stays in your system.
4. Body mass – generally the bigger you are the longer a drug will remain in your system.
Phenylephrine has a half life of about 2 1/2 hours.
- Phenylephrine Information for Consumers
- Phenylephrine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Phenylephrine (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Is there any danger to taking one tab of this every night before sleeping? It cured my snoring but I wonder about any long term effects.
1 answer • 22 Mar 2010
how long does concerta stay in yor system?
1 answer • 15 Jun 2010
If I tack two deferent binzos can thy find out witch, ones at a drug test. How long will it stay in my system
2 answers • 21 Oct 2010
... pill's don't stay in my system to long, I also want to know if it will cause me to have seizures, someone told me it would. I have took ...
1 answer • 3 Sep 2011
just wanted to know how long one 20 mg. lasic will stay in your system?
1 answer • 3 Oct 2014