Androgel contains testosterone gel can be used for testosterone replacement but should be sued with caution because it has plenty of side effects. It may cause skin irritation, blisters on skin, problems with urination, nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice and swelling of ankles. Hence use it only under a medical supervision.
I hope it helps. Take care and regards.