It is retained in the brain at a measurable level after an injection at standard dose (0.1 mmol/kg). In vitro studies found it neurotoxic, less so than linears agents. Drugs with gadolinium-based contrasting agents can cause nephrogenic systemic fibrosis (NSF, or gadolinium-induced fibrosis) for those with impaired elimination of the drug. Those most at risk for NSF include patients with chronic or severe kidney disease and acute kidney injury. The most common adverse effects (>0.2%) in clinical studies were nausea, headache, injection site pain, injection site coldness, and burning sensation.
Gadoteric acid
Dimethyl methylphosphonate
Immunoisolate
Gadobenic acid
Folinic acid
Ioxaglic acid
Celadrin 
Niclosamide