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What is Sudafed®?

Tricia Christensen
Tricia Christensen
Tricia Christensen
Tricia Christensen

Sudafed® is a brand-name drug that can actually refer to several different drugs. In the past, when people bought this drug in pill-form, they received a decongestant called pseudoephedrine. This was widely available over the counter, and for many people without conditions like cardiovascular illness, it proved very useful in clearing up nasal congestion symptoms.

Concern about pseudoephedrine in Sudafed®, generic equivalents and other products arose. Pseudoephedrine could be used to make certain illegal forms of methamphetamine, and people had quick access to high volumes of it. In the 2000s, the decision was made to change the formulation of Sudafed® and it was principally replaced with a medication called phenylephrine. Now, if people go to their drug store to purchase over the counter Sudafed®, they’re likely to get a nasal decongestant that contains phenylephrine, and this decongestant can be found in other things that once continued pseudoephedrine, such as many combination cold and flu drugs or antihistamine and decongestant medicines, and in some nasal sprays.

Although Sudafed® does't require a prescription, it's often only available from a pharmacist.
Although Sudafed® does't require a prescription, it's often only available from a pharmacist.

There are some people who don’t feel there is much difference in function between pseudoephedrine and phenylephrine. Others are very divided and believe pseudoephedrine was far more effective. Though not available in an “over the counter” sense, most people still don’t need a prescription for pseudoephedrine. They can get it by approaching a pharmacist and asking for it. This allows the pharmacy to track sales of the medication, limit them to certain amounts and make sure requests for the drug are for personal and not illegal use.

Sudafed® is a cold remedy that today contains phenylephrine.
Sudafed® is a cold remedy that today contains phenylephrine.

Both of these medications in the present and former Sudafed® do have noted sided effects. Pseudoephedrine can cause dry mouth and eyes, rapid heartbeat, increased nervousness, insomnia and hyperactive behavior. More serious side effects like heart arrhythmia have been reported on rare occasion, and the drug is usually not recommended for people with thyroid disorders, heart conditions, anxiety disorder, enlarged prostate, glaucoma, or for those being treated with antidepressants or mood stabilizers.

Sudafed® can cause insomnia.
Sudafed® can cause insomnia.

Phenylephrine effects are important to note because they can cause high blood pressure and the decongestant is usually contraindicated if people presently have hypertension or take hypertension medications. Both pseudoephedrine and phenylephrine have many of the same contraindications. An important addition is that the latter has been linked to causing seizures in people with epilepsy. Milder side effects may include dry mouth, sleeplessness, dizziness, excitability, headache, and upset stomach.

Some feel that pseudoephredrine is more effective than its replacement, phenylephrine.
Some feel that pseudoephredrine is more effective than its replacement, phenylephrine.

It’s easy to forget that an over the counter medicine is still a medicine. It can interact with other medications taken or other conditions a person has. When in doubt or if a person has prominent medical conditions, he should talk with a doctor or pharmacist about the appropriateness of taking either form of Sudafed®.

Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent WiseGEEK contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...
Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent WiseGEEK contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...

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    • Although Sudafed® does't require a prescription, it's often only available from a pharmacist.
      By: mangostock
      Although Sudafed® does't require a prescription, it's often only available from a pharmacist.
    • Sudafed® is a cold remedy that today contains phenylephrine.
      By: Subbotina Anna
      Sudafed® is a cold remedy that today contains phenylephrine.
    • Sudafed® can cause insomnia.
      By: Dan Race
      Sudafed® can cause insomnia.
    • Some feel that pseudoephredrine is more effective than its replacement, phenylephrine.
      By: Arvind Balaraman
      Some feel that pseudoephredrine is more effective than its replacement, phenylephrine.