PROMETHAZINE-DM

Promethazine is an antihistamine and works by reducing the symptoms brought by the natural substance histamine to our body such as watery eyes, runny nose and sneezing. Dextromethorphan (DM) is a cough suppressant that reduces the urge to cough by affecting certain part of the brain.

This combination medication is used to temporarily treat symptoms like runny nose, coughing, and sneezing due to common cold, allergies, hay fever, and other breathing illnesses. This medication may also be used in other conditions to be determined by your doctor.

Do not use this drug:

  • To children, especially under 2 years old. This drug may cause serious complication.
  • To children with liver disease including possible Reyes Syndrome.
  • If you are allergic to any content of this drug.

This medication may make you more sensitive to the sun. Limit your sun exposure and provide protection to your skin such as applying sunscreens. Also, avoid tanning booths and sunlamps. Tell your doctor right away if you get sunburned or have skin blisters or redness.

Common side effects may include:

  • drowsiness
  • dizziness
  • blurred vision
  • nausea
  • constipation
  • dry mouth

Notify your doctor promptly if any of these symptoms persist or worsen.

Your doctor may have prescribed this medication because he or she judged that the benefit to you is greater than the risk of side effects.

Unlikely but serious side effects may include:

  • Decreased Coordination
  • Difficulty Urinating
  • Shaking (Tremor)

Rare serious side effects may occur, including:

  • Slow Heartbeat
  • Fainting
  • Slow or Shallow Breathing
  • Mental or Mood Changes (such as Nervousness, Excitement, Irritability, Confusion, Hallucinations)
  • Abnormal or Involuntary Movements (such as Fixed Upward Stare, Neck Twisting, Tongue Movements)
  • Seizures
  • Severe Allergic Reaction
  • Neuroleptic Malignant Syndrome (NMS)

Seek immediate medical attention if you experience any of these serious side effects.

Precautions

Before taking this medication, tell your doctor or pharmacist:

  • If you are allergic to promethazine or to dextromethorphan; or to any other Phenothiazines (such as Prochlorperazine); or if you have any other allergies.
  • If you are to undergo any surgery or x-ray with dye.
  • If you are pregnant or breastfeeding.
  • If you have certain medical condition that avoid or limits you to take this drug into your diet like Diabetes and Phenylketonuria (PKU).
  • Your medical history, especially of:
    • Breathing Problems (such as Asthma, Emphysema, Sleep Apnea)
    • Heart Problems (such as Slow or Irregular Heartbeat, Chest Pain)
    • Liver Problems
    • Difficulty Urinating (such as Due to an Enlarged Prostate)
    • Stomach or Bowel Problems (such as Blockage, Ulcer)
    • High Blood Pressure
    • Diabetes
    • Glaucoma
    • Seizures
    • Blood or Immune System Problems (such as Bone Marrow Depression)

This drug may cause dizziness, drowsiness or blurred vision. Avoid activities requiring alertness or clear vision such as driving until you are sure you can perform such activities safely. Limit the use of alcohol and certain other medications that cause drowsiness.

Older adults and children may be more sensitive to the side effects of this drug, especially dizziness, drowsiness, mental or mood changes, constipation, fast heartbeat, trouble urinating, or blood pressure changes. For children, they may also experience excitability rather than drowsiness. Special caution must be observed to those children who have a family history of sudden infant death syndrome (SIDS), those who have a severe loss of fluid (dehydration), and those who are hard to wake up from sleep.

 

Interactions

Drug interactions may either lessen the effectiveness of this drug or heighten the risk for severe side effects. It’s important to inform your doctor all the medication including prescription and non-prescription and herbal medicines you are taking or going to take.

Possible interactions with this drug are:

  • Diphenhydramine
  • Antihistamines Applied to the Skin (such as Anti-Itch Cream, Ointment, Spray)
  • Metoclopramide
  • Mao Inhibitors (Isocarboxazid, Methylene Blue, Moclobemide, Phenelzine, Procarbazine, Rasagiline, Selegiline, or Tranylcypromine)
  • Opioid Pain or Cough Relievers (such as Codeine, Hydrocodone)
  • Alcohol
  • Drugs For Sleep or Anxiety (such as Alprazolam, Lorazepam, Zolpidem)
  • Muscle Relaxants (such as Carisoprodol, Cyclobenzaprine)
  • Other Antihistamines (such as Cetirizine, Diphenhydramine)

This product may interfere with certain lab tests such as urine pregnancy tests, skin allergy tests.  Make sure laboratory personnel and all your doctors know you use this drug to avoid false results.

Call emergency hotline if someone has overdosed and has serious symptoms such as passing out or trouble breathing.

Symptoms of overdose may include:

  • Severe Drowsiness
  • Inability To Wake Up
  • Slow or Shallow Breathing
  • Slow Heartbeat
  • Hallucinations
  • Seizures

 

Available brand/s:

Paroxetine

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