Get emergency medical help if you have any signs of an allergic reaction to AndroGel: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using AndroGel and call your doctor at once if you have:
increased urination (many times per day), loss of bladder control;
painful or difficult urination;
breast pain or swelling;
painful or bothersome erections;
swelling, rapid weight gain, shortness of breath during sleep;
chest pain or pressure, pain spreading to your jaw or shoulder;
liver problems - nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
signs of a blood clot in the lung - chest pain, sudden cough, wheezing, rapid breathing, coughing up blood; or
signs of a blood clot in your leg - pain, swelling, warmth, or redness in one or both legs.
Topical testosterone is absorbed through the skin and can cause symptoms of male features in a woman or child who comes into contact with the medication. Call your doctor if your female partner has male-pattern baldness, excessive body hair growth, increased acne, irregular menstrual periods, or any other signs of male characteristics.
Common AndroGel side effects may include:
redness, itching, burning, hardened skin or other irritation where the medicine was applied or where the skin patch was worn;
increased red blood cells (may cause dizziness, itching, redness in your face, or muscle pain);
increased prostate-specific antigen;
increased blood pressure;
headache;
mood changes, strange dreams;
frequent or prolonged erections;
nausea, vomiting; or
swelling in your lower legs.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 AndroGel side effects (more detail)
