Rituximab (Rituxan and MabThera) is a drug used to treat rheumatoid arthritis that has not improved with other types of medications, as well as certain forms of vasculitis.
When a Roth IRA May Be Better Than TSP. Like a 401k retirement plan, the federal Thrift Savings Plan requires you to pay taxes on both your contributions and earnings that you withdrawal during retirement. While a Roth IRA allows investors to withdrawal their contributions and earnings in retirement tax-free after they reach 59 Â½ years of age.
By Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.y Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.