Hi, dear I have gone through your question. I can understand your concern. Diamox contain acetaolamide. There are many side effects of diamox. Common side effects of diamox include dizziness, lightheadedness, and an increased amount of urine, especially during the first few days as your body adjusts to the medication. Other side effects of Diamox Sequels include blurred vision or changes in vision, dry mouth, drowsiness, loss of appetite, stomach upset, nausea, vomiting, constipation, diarrhea, changes in taste, headache, tiredness, drowsiness, fatigue, weakness, nervousness, mild tremor, confusion, increased sensitivity of the skin to sunlight, worsening gout, loss of blood sugar control (if you are diabetic), or ringing in your ears or hearing problems. As such lymphoma is not contraindication and diamox does not cause lymphoma. So don t worry about that. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health.