 - Based on the results of the Hypoparathyroidism Symptom Diary HPT-SD administered during the first week of the screening period from Week -3 to Week -2 visits, the participant reports at least 2 of the following symptoms that average at least moderate in intensity: muscle cramps, muscle spasms or twitching, tingling, numbness, heaviness in arms or legs, physical fatigue, or slowed or confused thinking brain fog. Additionally, the sum score of the HPT-SD symptom subscale items 1-7 measured during the first week of the screening period must be greater than or equal to 6. At least 4 responses must be entered for each symptom. 