Phenylephrine

Dosage Forms Available

• Phenylephrine is available in various forms, including tablets, liquids, dissolving strips, and chewable tablets for oral administration.

Age and Dose Restrictions

• This medication is suitable for adults and children; however, the dosage is typically based on age.

Contraindications

• This medicine is contraindicated in individuals who have known allergies to any of its constituents and in patients who are taking or have recently taken (within the last 14 days) monoamine oxidase inhibitors (MAOIs).

• Additionally, it should not be taken by patients with high blood pressure, severe heart disease, or narrow-angle glaucoma.

Other Medications to Avoid

• Phenylephrine can interact with antihypertensives (e.g., beta-blockers like propranolol), monoamine oxidase inhibitors (MAOIs) (e.g., phenelzine), and tricyclic antidepressants (e.g., amitriptyline). It may also interact with other vasoconstrictors (e.g., pseudoephedrine).

Overdose and Missed Dose

• An overdose of this medicine can lead to a range of symptoms, including headaches, nausea, high blood pressure, slow heart rate, and irregular heartbeats. You might also feel a fullness in your head and tingling in your arms or legs. If you experience any of these symptoms, seek medical help right away.

• If you miss a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Avoid doubling the dose.

Management of Side Effects

Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.

• Sip water if you experience dry mouth.

• Lying down in a dark, quiet room can help manage headaches.

• Avoid beverages that contain caffeine as it can contribute to restlessness.

Use in Driving and Operating Machinery

• Phenylephrine may cause dizziness or lightheadedness, affecting your ability to drive or operate heavy machinery. Avoid these activities if you feel dizzy or lightheaded after taking this medicine.

Use in Pregnancy and Lactation

• Pregnant or breastfeeding women should consult their doctor before using Phenylephrine.

Caution in Other Conditions

Caution should be exercised when Phenylephrine is used by patients with certain health conditions, such as high blood pressure, heart disease, diabetes, thyroid disorders, an enlarged prostate, and narrow-angle glaucoma.

Special Dietary and Lifestyle Recommendations

• To manage allergies, it can help to avoid known allergens and irritants.

• Using a humidifier can help keep nasal and sinus passages moist, reducing congestion.

• Regular handwashing can prevent the spread of viruses that cause the common cold and flu.

• Adequate hydration and a healthy diet can boost the immune system, helping to prevent respiratory illnesses.