Please choose the correct ending to complete the given sentence: Health: [header] How to reduce tsh levels [title] Have your tsh levels tested. [step] The most reliable way to lower your tsh levels due to hypothyroidism is to take a synthetic thyroid hormone called levothyroxine. This drug is available by prescription from your doctor.

Ending1: However, if you don't get any response from your doctor, try some probiotic supplements to avoid tsh sensitivity. [substeps] Popular probiotic supplements include: arbyl-sate (mipee), coenzyme (phytococcus), and piros (vators). Ending2: If you're having difficulties regulating your tsh levels, it may be useful to take other forms of thyroid hormone. [substeps] You should check your doctor's approval to administer levothyroxine. Ending3: [substeps] Be sure that you talk to your doctor about taking this drug in children younger than nine years old. Levothyroxine can be taken as candy or consumed as a tablet. Ending4: It is an oral medication that restores your hormone levels and reverses the symptoms of hypothyroidism. You will need to take it once a day.

Answer format: ending1/ending2/ending3/ending4