May 25, 2017


(abaloparatide) Injection, For Subcutaneous Use



  • Abaloparatide caused a dose-dependent increase in the incidence of osteosarcoma (a malignant bone tumor) in male and female rats. The effect was observed at systemic exposures to abaloparatide ranging from 4 to 28 times the exposure in humans receiving the 80 mcg dose. It is unknown if TYMLOS will cause osteosarcoma in humans [see WARNINGS AND PRECAUTIONS and Nonclinical Toxicology].
  • The use of TYMLOS is not recommended in patients at increased risk of osteosarcoma including those with Paget's disease of bone or unexplained elevations of alkaline phosphatase, open epiphyses, bone metastases or skeletal malignancies, hereditary disorders predisposing to osteosarcoma, or prior external beam or implant radiation therapy involving the skeleton [see WARNINGS AND PRECAUTIONS].
  • Cumulative use of TYMLOS and parathyroid hormone analogs (e.g., teriparatide) for more than 2 years during a patient's lifetime is not recommended [see WARNINGS AND PRECAUTIONS].


TYMLOS injection for subcutaneous administration contains abaloparatide, a synthetic 34 amino acid peptide. Abaloparatide is an analog of human parathyroid hormone related peptide, PTHrP(1-34). It has 41% homology to hPTH(1-34) (human parathyroid hormone 1-34) and 76% homology to hPTHrP(1-34) (human parathyroid hormone-related peptide 1-34).

Abaloparatide has a molecular formula of C174H300N56O49 and a molecular weight of 3961 daltons with the amino acid sequence shown below:



TYMLOS injection is supplied as a sterile, colorless, clear solution in a glass cartridge which is pre-assembled into a disposable single-patient-use pen. The pen is intended to deliver 30 once daily abaloparatide doses of 80 mcg in 40 mcL. Each cartridge contains 1.56 mL of TYMLOS solution. Each mL contains 2000 mcg abaloparatide and the following inactive ingredients: 5 mg phenol, 5.08 mg sodium acetate trihydrate, 6.38 mg acetic acid, and water for injection.

Last reviewed on RxList: 5/5/2017
This monograph has been modified to include the generic and brand name in many instances.

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