Guaifenesin/P-Ephedrine/Cod Syrup Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Constipation
  • Difficulty Sleeping
  • Drowsiness
  • Head Pain
  • Inducing Of A Relaxed Easy State
  • Nausea
  • Stomach Cramps

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • A Complete Or Partial Collapse Of The Lung Airways Called Atelectasis
  • Abnormal Nervous System Function Affecting Alertness
  • Decreased Lung Function
  • Orthostatic Hypotension, A Form Of Low Blood Pressure
  • Trouble Breathing

If experienced, these tend to have a Less Severe expression

  • A Change In Vision
  • A Skin Rash
  • Agitation
  • Confusion
  • Decreased Appetite
  • Decreased Urine Production
  • Difficult Or Painful Urination
  • Dizziness
  • Drowsiness
  • Dry Mouth
  • Excessive Sweating
  • Fainting
  • Fast Heartbeat
  • Feelings Of Dissatisfaction, Sadness, And Unease
  • Generalized Weakness
  • Head Pain
  • Heart Throbbing Or Pounding
  • Hives
  • Itching
  • Loss Of Skin Color
  • Low Blood Pressure
  • Muscle Tremors
  • Nausea
  • Nervousness
  • Vomiting

RARE side effects


If experienced, these tend to have a Severe expression

  • A Condition Where The Body Is Unable To Maintain Adequate Blood Flow Called Shock
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Type Of Skin Disorder Called Acute Generalized Exanthematous Pustulosis
  • Blocked Bowels With Decreased Peristaltic Movement
  • Complete Stoppage Of The Heart
  • Decreased Blood Flow In The Body
  • Decreased Function Of The Adrenal Gland
  • Deficiency Of A Substance That Promotes Masculinization
  • Dependence On Opioid-Type Drugs
  • Hallucinations
  • High Blood Pressure
  • Insufficient Blood Supply To The Colon
  • Lung Failure Causing Loss Of Breath
  • Pancreatitis
  • Seizures
  • Sleep Apnea
  • Slow Heartbeat
  • Trouble Breathing
  • Vomiting

If experienced, these tend to have a Less Severe expression

  • Abnormal Heart Rhythm
  • Altered Interest In Having Sexual Intercourse
  • An Extreme Sense Of Wellbeing Called Euphoria
  • Anxious Feelings
  • Diarrhea
  • Difficulty Sleeping
  • Excessive Sweating
  • Heart Throbbing Or Pounding
  • Indigestion
  • Infertility
  • Irritation Of The Stomach Or Intestines
  • Low Energy
  • Nausea
  • Over Excitement
  • Sensation Of Spinning Or Whirling
  • Spasm Of A Bile Duct Tract
  • Stomach Cramps
  • Temporary Redness Of Face And Neck
  • The Inability To Have An Erection
  • Vomiting

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.