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What the label lists and what reports show

Glycine side effects

Glycine's FDA label lists its adverse reactions in its own words. FAERS holds 319 reports naming it through July 30, 2026; the reaction reported most often, leaving out the conditions it is used for, product-use terms and outcomes, is nausea (28 reports).

  • No generic listed

Check it at the source: the glycine FDA label on DailyMed (effective April 1, 2021, B. Braun Medical Inc.); the FDA FAERS public dashboard.

What does the label list?

From the label: adverse reactions

Adverse reactions may include fluid and electrolyte disorders such as acidosis, electrolyte loss, marked diuresis, urinary retention, edema and dehydration; cardiovascular/pulmonary disorders such as pulmonary congestion, hypotension, tachycardia, angina-like pain and thrombophlebitis; other possible reactions include visual disturbances, convulsions, nausea, vomiting, diarrhea, vertigo and urticaria. Literature includes reports on hyponatremia, hyperammonemia, transient blindness, coma (immediate or delayed), and digitalis toxicity in digitalized patients. If an adverse reaction occurs, discontinue the irrigant and reevaluate the clinical status of the patient.

Source: FDA drug label, B. Braun Medical Inc., effective April 1, 2021 (SPL set f4d83550-42de-44c7-b8d5-1d0debc6aec2), via openFDA; the full label on DailyMed

What do FAERS reports show?

319 reports list glycine among the medicines taken, each a report of something that happened, not proof the medicine caused it; 28 are coded as a death and 142 as a hospital stay. Counts follow how widely a medicine is used and watched, and they are not a measure of how risky it is. Of the 21 reactions below, 2 are named by the same term (in US spelling) in the label's adverse reactions, warnings or patient leaflet; a reaction the label does not name may still be there under another word, and a report does not show that the medicine caused it.

The 25 most reported reactions

  • Drug Ineffective (a use or a product term, not a reaction)37
  • Nausea (named in the label)28
  • Pneumonia27
  • Off Label Use (a use or a product term, not a reaction)26
  • Condition Aggravated (a use or a product term, not a reaction)24
  • Fatigue24
  • Rash23
  • Status Epilepticus22
  • Stevens-Johnson Syndrome22
  • Depressed Level Of Consciousness21
  • Insomnia21
  • Sopor21
  • Headache18
  • Diarrhoea (named in the label)17
  • Pain16
  • Arthralgia15
  • Dizziness15
  • Hyperkalaemia15
  • Hypotension15
  • Overdose (a use or a product term, not a reaction)15
  • Anxiety14
  • Bradycardia14
  • Cardiac Arrest14
  • Skin Laceration14
  • Rhabdomyolysis13

Source: FDA Adverse Event Reporting System (FAERS) via openFDA, reports through July 30, 2026; reactions as MedDRA preferred terms

What next?

Glycine: the full record
label, generics, price, shortages, recalls
Side effects hub
the most reported medicines and reactions