Can taking Propylthiouracil for low TSH cause side effects?

Hello doctor,

Seven years back, I had done my thyroid profile. My TSH (thyroid-stimulating hormone) levels were low at 0.005 mU/L, free T3 (tri-iodothyronine) 4.45 pg/mL, and free T4 (thyroxine) 1.83 ng/dL. I have no symptoms of any hyperthyroidism, and I feel fine. I did my thyroid scan with a 99m Tc (Technetium) scan. The picture suggests a hyperfunctioning thyroid gland with mild thyroid gland enlargement in the right greater than the left. I consulted the doctor, and they gave me a daily dose of 20 mg of Methimez. After two months, I had bad side effects of Methimez, like rashes on my face, swelling in my lips, fever, and joint pain. Then I stopped Methimez. After one month, I restarted my Methimez but took 5 mg daily. After one month, I experienced side effects and asked my doctor. He stopped my Methimez, and now he gives me PTU (Propylthiouracil). I am afraid whether PTU has the same side effects or not. For the last 20 days, I have not taken any medicine. Can I go for PTU, or there is some other medicines for this? Will PTU cause adverse effects on me or not? Please help. Here is my thyroid profile:

1. Seventh-month report: TSH was 0.009 mU/L, free T3 3.73 pg/mL, and free T4 1.95 ng/dL.

2. Sixth month report: TSH was 0.010 mU/L.

3. Fifth-month report: TSH is 0.008 mU/L, free T3 5.72 pg/mL, and free T4 2.94 ng/dL.

4. Fourth-month report: TSH is 0.010 mU/L, free T3 5.27 pg/mL, and free T4 2.29 ng/dL.

5. Third-month report: TSH is 0.005 mU/L, free T3 4.45 pg/mL, and free T4 1.83 ng/dL.