Levothyroxine is a drug used to treat hypothyroidism, which is a condition that results from underactive thyroid gland. It provides thyroid hormone to the body. The side effects include increased appetite, weight loss, excessive sweating, nervousness, and anxiety.

Recently Answered Questions Recently Answered Questions

All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

I am afraid Levothyroxine, when taken lifelong, can interfere with my pregnancy and reduce my lifespan. Please advise.

Query: Hi doctor, I am actually afraid of the side effect of the medicine that I take the whole time during my lifespan. I weigh 54 kg, and my BP and sugar are normal. Two years ago, I had a nodule in the left lobe of the thyroid gland. After FNAC, it was suspicious follicular adenoma. My doctor did a tota...  Read Full »

Dr. Uzma Arqam

Answer: Hi, Welcome to icliniq.com. I thoroughly read your query and understand your concern. It is nice to have self-concern but be positive. Do not be anxious. Follow all precautions, necessary advice, and treatment, whatever is suggested by your doctor. It is better to have strict control over your thyro...  Read Full »

I have had heavy and painful bleeding after amenorrhea for three weeks since I started taking Levothyroxine. Is it because of Levothyroxine?

Query: Hi doctor, I am a 19 years old female who is taking tablet Levothyroxine for hypothyroidism. But, I suddenly stopped taking it and had amenorrhea, which made me have no bleeding for weeks. Then I started taking tablet Levothyroxine again but now I have been bleeding for three weeks with a gap of thr...  Read Full »

Dr. Monica Mathur

Answer: Hi, Welcome to icliniq.com. First of all, I would like to advise you to never stop any medicine on your own because these medications can have sudden withdrawal symptoms, which can be harmful. Always consult your treating doctor before starting or stopping any medicines, because these medicines ha...  Read Full »

Are TSH drops and fast heartbeats normal while on Levothyroxine?

Query: Hi doctor, I am a 53-year-old peri-menopausal woman. My weight is 160 lbs. I had a thyroidectomy ten years before. Since then, I have been taking Levothyroxine 112 mcg daily and was maintaining a TSH level around 3.5 to 5 mU/L. (last good test was four months back with TSH- 4.0 mU/L). However, thre...  Read Full »

Dr. Penchilaprasad Kandikattu

Answer: Hi, Welcome to icliniq.com. Sudden drop of TSH (thyroid-stimulating hormone) level may be due to thyroiditis, inflammation, or leak of thyroid hormones. Other possibilities are mistakenly taken excessive levothyroxine dose, or the previous dose may not have absorbed well with immediate food intake...  Read Full »

Are there any foods to be avoided while on Levothyroxine?

Query: Hello doctor, I had a sudden weight gain. Are there any foods that should be avoided either at certain times of the day or all together while taking Levothyroxine to treat an underactive thyroid?  Read Full »

Dr. Makwana Tanvi Ghanshyambhai

Answer: Hello, Welcome to icliniq.com. Avoid raw cabbage, cauliflower, brocolli, soy and soy products like soy sauce, soy milk, tofu, strawberry, walnut, spinach, and brussel sprouts. Do not take any meals or drink except plain water for atleast 45 minutes after taking medication. Avoid taking acidity-causi...  Read Full »

I have been taking Levothyroxine sodium 100 mcg for a year without side effects. Why do I suddenly have exhaustion, body ache, brain fog, and constipation?

Query: Hello doctor, I am 71 years old, five feet tall, and weigh 118 pounds. I take Levothyroxine sodium 100 mcg daily, five times a week, except on Sunday and Monday. I felt good about this for about a year. Now I am exhausted, and have an achy body, brain fog, and constipation. A year ago, my thyroid le...  Read Full »

Dr. Goswami Parth Rajendragiri

Answer: Hello, Welcome to icliniq.com. You have hypothyroidism as per history and taking Thyroxine for that. The dose of Levothyroxine is changed according to the serum TSH (thyroid-stimulating hormone) level. Therefore, the level of TSH should be maintained within range by changing the dose of Levothyrox...  Read Full »

My friend got her thyroid gland removed. Are there any side effects of taking Levothyroxine?

Query: Hello doctor, My friend had gotten her thyroid gland removed due to a suspicious follicular adenoma. However, no cancer was found in the biopsy after the surgery. I have a few questions regarding her health issues. What are the side effects of consuming synthetic Levothyroxine for the whole life on ...  Read Full »

Dr. Goswami Parth Rajendragiri

Answer: Hello, Welcome to icliniq.com. I went through your query and understood your concern. For the metabolic functions of the body, thyroid hormone is needed. As she has no thyroid gland, thyroid hormone supplements will do the needful. So she has been prescribed Levothyroxine. The dose of the tablet ...  Read Full »

Having thyroid, i am not able to reduce weight. Can you suggest any medicines?

Query: Hi doctor, My wife had three cesarean deliveries. She is not able to reduce weight despite all her efforts. Her thyroid profile T3 is 3.05 mIU/mL, T4 is 0.83 mIU/mL, and TSH is 5.339 mIU/mL. Please suggest whether any medication is required or not for thyroid.  Read Full »

Dr. Ashok Kumar

Answer: Hi, Welcome to icliniq.com. I read your query and understand your concerns. The available values show that her thyroid function test is within normal limits but slightly on the lower side. No medication is required in regard to the thyroid, as she does not have any symptoms related to ...  Read Full »

I am gaining weight. Should I increase dose of Eltroxin?

Query: Hi doctor, I am 58 years old. I have been diagnosed with hypothyroidism 20 years ago. I am on Eltroxin medication since then, 100 mcg daily and twice a week 150 mcg. My T3, T4, and TSH are normal as I do blood analysis every six months. I noticed I am gaining weight from three months although my die...  Read Full »

Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. Since your thyroid test results are normal and considering your age, it is not advisable to increase the dose of Eltroxin just because you are gaining weight. If a person does not exercise much and after a certain age, he just keeps adding the weight every year just ...  Read Full »

My triglyceride and TSH levels are high. What should be the dosage of Thyronorm?

Query: Hello doctor, My TSH level is 15 mU/L. What dose should I take of Thyronorm? My triglyceride level is also very high, at 520 mU/L. Currently suffering from allergic rhinitis, itching, hidradenitis suppurativa, and weight gain. I was diagnosed with hidradenitis suppurativa the last six years ago.  Read Full »

Dr. Nagaraj

Answer: Hello, Welcome to icliniq.com. I understand your concern. The value provided looks like hypothyroidism. In addition, triglycerides are increased, and fasting sugar levels are impaired. Do you have a problem with menstruation? Any hair growth on the face? Stretching of skin over tummy? Any swe...  Read Full »

I took 500 mg of Levothyroxine. Should I go to the emergency room?

Query: Hello doctor,I took 500 mg of Levothyroxine. Should I go to the emergency room?  Read Full »

Dr. Mahmoud Ahmed Abdelrahman Abouibrahim

Answer: Hello, Welcome to icliniq.com. Excess thyroid hormones intake could cause life-threatening symptoms. Do you have any of the following symptoms? Palpitations. Excessive sweating. Hand tremors. Rapid breathing. In case you have these symptoms, please seek medical advice in the ER (emerge...  Read Full »

ask-doctor-img Ask a Doctor Online

* Your first query consult is free!

Search for a Health Issue

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.