Which of the following statements is FALSE
a. Increased growth hormone in adults causes acromegaly.
b. Hyperthyroidism can be treated with Synthroid.
c. "Stacking" is using two or more anabolic steroids drugs at the same time.
d. The drug name levothyroxine shows that its molecular structure is rotated to the left (levo-).

The option that is false is option 'b'

Hyperthyroidism can be treated with synthroid

Explanation:

Synthroid (levothyroxine) is a thyroid medicine that replaces a hormone normally produced by your thyroid gland to regulate the body's energy and metabolism. Levothyroxine is given when your thyroid does not produce enough of this hormone on its own.

Synthroid is used to treat hypothyroidism (low thyroid hormone).

Synthroid is also used to treat or prevent goiter (enlarged thyroid gland), which can be caused by hormone imbalances, radiation treatment, surgery, or cancer.