What should I avoid while taking phenylephrine and promethazine?
Use caution when driving, operating machinery, or performing other hazardous
activities. Phenylephrine and promethazine may cause dizziness or drowsiness. If you experience
dizziness or drowsiness, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking
phenylephrine and promethazine.
Avoid prolonged exposure to sunlight. Phenylephrine and promethazine may increase
the sensitivity of the skin to sunlight. Use a sunscreen and wear protective clothing when exposure to
the sun is unavoidable.
Do not take other over-the-counter cough, cold, allergy, diet, pain, fever, or sleep medicines
while taking phenylephrine and promethazine without first talking to your doctor or pharmacist.
Other medications may also contain phenylephrine, promethazine or other similar drugs, and you
may accidentally take too much, which could be harmful.
What other drugs will affect phenylephrine and promethazine?
Do not take phenylephrine and promethazine if you have taken a monoamine oxidase
inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine (Nardil), tranylcypromine (Parnate),
or selegiline (Eldepryl) in the last 14 days. A dangerous drug interaction could occur, leading to
serious side effects.
Phenylephrine and promethazine may increase the effects of other drugs that cause
drowsiness, including antidepressants, alcohol, sedatives (used to treat insomnia), pain relievers,
anxiety medicines, and muscle relaxants. Tell your doctor about all medicines that you are taking,
and do not take any medicine unless your doctor approves.
Do not take other over-the-counter cough, cold, allergy, diet, pain, fever, or sleep medicines
while taking phenylephrine and promethazine without first talking to your doctor or pharmacist.
Other medications may also contain phenylephrine, promethazine or other similar drugs, and you
may accidentally take too much, which could be harmful.
Drugs other than those listed here may also interact with phenylephrine and promethazine.
Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines,
including vitamins, minerals, and herbal products.