Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
new or worsening acne;
shortness of breath (even with mild exertion), swelling in your ankles or feet, rapid weight gain;
increased or ongoing erection of the penis;
unusual penis growth before puberty;
impotence, ejaculation problems, decreased amounts of semen, decrease in testicle size;
painful or difficult urination;
liver problems--nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or
high levels of calcium in your blood--vomiting, stomach pain, constipation, increased thirst or urination, muscle pain or weakness, joint pain, confusion, and feeling tired or restless.
Women receiving oxandrolone may develop male characteristics, which could be irreversible if testosterone treatment is continued. Stop taking  oxandrolone and call your doctor at once if you notice any of these signs of excess testosterone:
acne;
changes in menstrual periods;
male-pattern hair growth (such as on the chin or chest);
hoarse or deepened voice; or
enlarged clitoris.
Common side effects (in men or women) may include:
breast swelling;
feeling excited;
sleep problems (insomnia); or
increased or decreased interest in sex.
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.
 Oxandrolone side effects (more detail)
