Pth 30 Tablet is used to treat high calcium levels in the blood and hyperparathyroidism. It works by controlling the levels of parathyroid hormone (PTH), calcium, and phosphorus in your body. Pth 30 Tablet may be used alone or in combination with other medicines. It can be taken with or without food. It should be taken exactly as prescribed by your doctor. Your doctor will decide the dose and how often you should take them. You should take this medicine regularly to get the most benefit from it. Do not stop taking the medicine even if you feel better unless the doctor tells you so. The most common side effects of this medicine are nausea and vomiting. It may also cause other side effects such as headaches, diarrhea, rash, and muscle pain. Let your doctor know if any of these side effects do not go away with time or get worse, or if you experienced any other symptoms which you think are caused by this medicine. Before using this medicine, inform your doctor if you have any problems with your heart, liver, or ever had seizures (fits or convulsions). You should also tell your doctor all the other medications you are taking. If you have low levels of calcium in your body, you should not take this medicine. Your doctor may monitor your blood calcium level while on treatment with this medicine. Pregnant and breastfeeding mothers should ask their doctors' advice before taking this medicine.