9 Synthroid Side Effects That Might Mean Your Dosage Is Way Off

Women who are post-menopausal or who use this medicine for a long time may have some bone loss, which could lead to osteoporosis. Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding. Note that this list is not all-inclusive and includes only common medications that may interact with Synthroid. You should refer to the prescribing information for Synthroid for a complete list of interactions. Not all generic forms of Synthroid are created equal, which can create additional side effects, Goldfarb says. While most women tolerate the different generics just fine, some may have a reaction to the other ingredients used in the pills.

Pregnant Patient*

But, an imbalance in other hormones not directly related to your menstrual cycle can influence reproductive hormone levels and cause AUB. An upset tummy and diarrhea are two potentially embarrassing but relatively common side effects of Synthroid. This should normalize out as your thyroid levels stabilize, but if you find yourself too nauseous to take your pill or are suffering from chronic diarrhea call your doctor right away, she says.

Side Effects

It is meant to replace a hormone that is usually made by your thyroid gland. A 2018 study screened 100 perimenopausal women with a provisional diagnosis of AUB for thyroid dysfunction. According to their results, 32% of the women had a form of thyroid dysfunction, with the majority having either subclinical (mild form) or overt hypothyroidism. A very small portion had hyperthyroidism or high thyroid hormone levels. While you cannot completely prevent spotting, there are some strategies to minimize it.

During this period, the uterine lining may become thicker and then thin again, leading to spotting. When you discontinue the use of birth control pills, it’s common to experience changes in your menstrual cycle, including spotting. The duration and intensity of spotting can vary significantly from person to person, making it essential to consult a healthcare provider for personalized advice. This is especially important if you are concerned about the timing or amount of spotting, or if it persists for an extended period. In summary, spotting after discontinuing birth control pills is primarily due to hormonal changes in the body.

Cotton seed meal, dietary fiber, soybean flour (infant formula), or walnuts may decrease the absorption of this medicine from your body. You may have to take this medicine at a different time of day from when you eat these foods. Devoted to the education, treatment, and healing of all forms of hypothyroidism. Emilie White, PharmD is a clinical pharmacist with over a decade of providing direct patient care to those hospitalized. She received her Doctor of Pharmacy degree from Massachusetts College of Pharmacy and Health Sciences.

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Most women in this study with AUB and thyroid dysfunction were found to have overt hypothyroidism. A “regular” menstrual cycle ranges from 21 to 35 days, with menstrual bleeding lasting 4 to 7 days. But everyone’s menstrual cycles are different; what is normal for you might not be the same for someone else.

If you’re experiencing unusual changes in your menstrual cycle, you’re not alone. An estimated 14% to 25% of women report irregular menstrual cycles, also called abnormal uterine bleeding. Smoking, for instance, can impact the body’s hormonal balance and potentially lead to more prolonged spotting.

For healthcare professionals

Some women find that gradually reducing the dosage of birth control pills or using alternative methods of contraception can help reduce spotting. Consulting a healthcare professional is recommended to determine the best approach for your specific situation. A study evaluated the effect of long-term thyroid hormone therapy on bone mineral density in 196 women (mean age, 74.4 years) compared to a control group comprised of 795 women (mean age, 72.1 years). The mean daily thyroxine dose was 1.99 mcg/kg (range, 0.3 to 6.6 mcg/kg) with a mean duration of therapy of 20.4 years (range, less than 1 to 68 years). Women taking daily doses of 1.6 mcg/kg or more had significantly lower bone mineral density levels at the ultradistal radius, midshaft radius, hip, and lumbar spine compared to controls.

Synthroid Side Effects That Might Mean Your Dosage Is Way Off

• By recognizing these hormonal shifts, individuals can better prepare for and manage spotting, ensuring a smoother transition to a natural menstrual cycle.
• In summary, the duration of spotting after stopping birth control pills is highly individualized, influenced by health, lifestyle, and hormonal factors.
• Those taking blood thinners such as warfarin may also be at a higher risk for AUB.
• One sign that you’ve entered into hyperthyroid territory is a racing or irregular heart rate.
• Additionally, pre-existing conditions like endometriosis or uterine fibroids can contribute to heavier or more prolonged spotting.

In this study, the most common complaint was menorrhagia which was present synthroid considerations in 40.5% of cases. The second most complaint was polymenorrhoea in 23 (29.11%) patients which are followed by oligomenorrhoea in 12 (15.1%) patients. This study is similar to a study carried out by Kaur et al.17 and Singh P et al.18 in which polymenorrhoea was second most complain accounting for 37.5% cases. Fakhar et al.19 observed menorrhagia in 45% followed by polymenorrhagia in 30% cases.

In another study done by Gowri M et al.21 out of 170 cases, 132 (77.6%) cases were euthyroid, 30 (17.6%) of cases had hypothyroidism and 8 (4.7%) had hyperthyroidism. The most common bleeding disorder in this study was oligomenorrhoea followed by menorrhagia and hypomenorrhea. In another study done by Singh Pet al.18out of 400 cases, 65% were euthyroid, 26% had hypothyroid, and 9% had hyperthyroidism.