Penicillin G Benzathine Syringe Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Diarrhea
  • Headache
  • Nausea

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • A Skin Rash
  • Vomiting

RARE side effects


If experienced, these tend to have a Severe expression

  • A Condition With Muscle Tissue Breakdown Called Rhabdomyolysis
  • A Decrease In Blood Supply To The Intestines Resulting In Portions Of The Intestine Dying
  • A Serum Sickness Reaction
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Ulcer
  • A Stroke
  • A Type Of Blood Disorder Where The Red Blood Cells Burst Called Hemolytic Anemia
  • Abnormal Liver Function Tests
  • Blood In The Bowel Movement
  • Cellulitis
  • Complete Stoppage Of The Heart
  • Dead Skin
  • Decreased Blood Platelets
  • Decreased Kidney Function
  • Diarrhea From An Infection With Clostridium Difficile Bacteria
  • Gangrene
  • Increased Eosinophils In The Blood
  • Inflammation Of The Blood Vessels
  • Inflammation Of The Spinal Cord
  • Kidney Failure
  • Low Blood Pressure
  • Low Levels Of White Blood Cells
  • Methemoglobinemia, A Type Of Blood Disorder
  • Seizures
  • Skin Rash With Sloughing
  • Swollen Lymph Nodes
  • The Presence Of Myoglobin Protein In The Urine
  • Trouble Breathing
  • Vocal Cord Swelling

If experienced, these tend to have a Less Severe expression

  • A Feeling Of Pins And Needles On Skin
  • A Type Of Bumpy Skin Rash Called A Maculopapular Rash
  • An Extreme Sense Of Wellbeing Called Euphoria
  • Anxious Feelings
  • Bruising Under The Skin
  • Confusion
  • Dizziness
  • Drowsiness
  • Fainting
  • Fast Heartbeat
  • Fever
  • Generalized Weakness
  • Heart Throbbing Or Pounding
  • Hives
  • Itching
  • Low Energy
  • Muscle Tremors
  • Nervousness
  • Pain
  • Periostitis, Or Inflammation Of Connective Tissue Around Bones
  • Reactions At The Site Of The Injection
  • Visible Water Retention
  • Widening Of Blood Vessels

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

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.