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Since starting on levothyroxine (25mcg) last year, my cycle length has increased to anything up to 40 days. Previous to starting the medication I had a short cycle of 24 or 25 days with lots of intermenstrual bleeding. The IMB has now completely gone, which I'm very thankful for but I'm concerned about the increase in cycle length. I've also been experiencing hair loss. I've been thoroughly investigated due to my ongoing gynaecological issues and I definitely don't have PCOS. I've lost a lot of weight since last year and am now at a BMI of around 20. My question is could the medication be causing the long cycles and hair loss? I'm very worried about early menopause. I'm 37 years old with no kids. There is no chance I could be pregnant as I've been celibate for more than 4 years. Please help!
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Hello Faith and thank you for replying to me. I have seen my doctor and am now awaiting blood test results and also an appointment with a dermatologist about the hair loss. My thyroid has been checked again along with full blood count, serum ferritin levels, B12 levels, FSH, LH and prolactin. Let's hope my symptoms are not anything serious and perhaps can be helped by a change in medication.
Jacqui
April 6, 2015 - 11:29amThis Comment
Hello and thank you for sharing your question.
You are correct. Three of the possible side effects of levothyroxine are weight loss, hair loss and changes in menstrual cycle.
Sometimes side effect go away or decrease over time. Your doctor will be able to tell you how to reduce or prevent these side effects.
Faith
April 5, 2015 - 1:10pmThis Comment