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Parathyroid Side Effects

The most commonly reported side effects of parathyroid include recalled product, hypocalcaemia, and blood calcium decreased, based on 7,598 FDA adverse event reports from 2004 to 2025. 6.2% of reports found the drug to be ineffective.

Parathyroid side effects

Percentages show how often each reaction appears relative to total reports for parathyroid.

1
Recalled Product11.8%900
2
Hypocalcaemia10.4%787
3
Blood Calcium Decreased9.3%708
4
Drug Ineffective6.2%470
5
Headache5.9%451
6
Fatigue5.7%430
7
Muscle Spasms5.4%412
8
Paraesthesia5.3%401
9
Nausea5.0%378
10
Off Label Use3.9%295
11
Malaise3.7%282
12
Diarrhoea3.6%272
13
Pain3.5%263
14
Arthralgia3.4%260
15
Inappropriate Schedule Of Product Administration3.0%230

These are voluntary reports and do not establish that parathyroid caused these reactions.

Report severity

54.5%Serious4,138 reports
26.8%Hospitalizations2,034 reports
2.9%Fatal217 reports

Seriousness is determined by the reporter, not by OpenClaim.

Parathyroid drug interactions

Other drugs that appear in adverse event reports alongside parathyroid. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Sodium-oxybate2.5%191
2
Adalimumab1.4%106
3
Calcitriol1.4%106
4
Calcium1.1%87
5
Lenalidomide1.0%76
6
Teriparatide0.9%67
7
Rituximab0.8%60
8
Etanercept0.8%58
9
Apixaban0.8%58
10
Denosumab0.8%57
11
Ruxolitinib0.8%57
12
Atorvastatin-calcium0.6%47
13
Fluticasone0.6%43
14
Methotrexate0.6%43
15
Polyethylene-glycol-33500.5%41

Taken alongside

1
Calcium14.4%1,097
2
Ergocalciferol12.8%974
3
Calcitriol11.8%895
4
Levothyroxine-sodium10.8%817
5
Aspirin6.3%479
6
Acetaminophen5.8%444
7
Magnesium-acetate-tetrahydrate5.0%382
8
Albuterol3.9%299
9
Omeprazole3.8%291
10
Gabapentin3.7%278
11
Cyanocobalamin3.3%253
12
Hydrochlorothiazide3.2%246
13
Metoprolol3.2%240
14
Atorvastatin-calcium3.1%236
15
Prednisone3.1%234

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports parathyroid side effects

77.4% of parathyroid adverse event reports involve female patients and 12.0% involve male patients. The largest age group is adult at 68%. These figures reflect who reports side effects, not underlying risk.

Sex

Female77.4%
Male12.0%
Unknown10.7%

Age group

< 20.2%
2–110.3%
12–170.3%
18–6468.2%
65+30.9%

What is parathyroid used for

Conditions and purposes for which patients were taking parathyroid when the adverse event was reported.

Addison^s DiseaseAdrenal SuppressionAlopeciaAutoimmune HypothyroidismAutoimmune ThyroiditisAdjuvant TherapyAdrenal InsufficiencyAutoimmune HypoparathyroidismAutoimmune HypothyroidismBasedow's DiseaseBasedow^s DiseaseBladder DisorderBlood Calcium AbnormalBlood Calcium DecreasedBlood Parathyroid Hormone

Showing 15 of 131 indications

Parathyroid brand names and reporting trend

Parathyroid is sold under the brand name Natpara.

Brand names

Natpara10,558

Quarterly reports (20042025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking parathyroid with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.