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Niva Thyroid vs. Synthroid

Niva Thyroid is used to treat hypothyroidism (low thyroid hormones) for adults and children. It's also used for other various thyroid-related issues. Niva Thyroid is a natural thyroid hormone replacement that's taken by mouth once a day. Side effects aren't common unless you take too much of the medication.

• Hypothyroidism (low thyroid hormone)
• Other thyroid problems like goiters, thyroid nodules, or thyroid cancer

• Side effects are rare and are usually related to having too much thyroid hormones in the body

• Not for weight loss
• Dangerously low stress hormone levels (adrenal crisis)
• Worsening diabetes
• Risk of heart problems with too much medication
• Interactions with other medications

Synthroid (levothyroxine) is a thyroid hormone used to treat low thyroid hormone levels (hypothyroidism) in both children and adults. It's also used to treat a certain type of thyroid cancer. The medication comes as tablets in many different strengths. It's taken once a day by mouth, usually on an empty stomach in the morning. You'll need regular blood tests to make sure you're getting the right dose. Side effects can include headache, trouble sleeping, and weight loss.

• Hypothyroidism (low thyroid hormone levels)
• Thyroid cancer, together with radioactive iodine and surgery

Signs of having too much thyroid hormones in the body, such as:

• Irregular heartbeat
• Chest pain
• Shortness of breath
• Leg cramps
• Headache
• Nervousness
• Hives or skin rash
• Irritability
• Trouble sleeping
• Tremors
• Muscle weakness
• Change in appetite
• Weight loss
• Vomiting
• Diarrhea
• Sweating a lot
• Sensitivity to heat
• Fever
• Changes in menstrual period

• Not for weight loss
• Heart problems
• Adrenal crisis in people with adrenal insufficiency
• Worsening diabetes
• Bone loss