American direct-sales company Amway is set to invest about $180m to significantly raise US manufacturing and processing capacity to cater to the increasing global demand for its NUTRILITE brand of vitamin, mineral and dietary supplements.

The overall investment is meant for four operations including a new $81m nutrition plant at the company’s Spaulding Avenue site in Ada, Michigan.

The new plant is expected to create 200 jobs over the next three years.

To support the construction of the nutrition products manufacturing facility, the Michigan Economic Development Corporation (MEDC) approved a $1.6m Michigan Business Development Program incentive under the Michigan Strategic Fund (MSF), to Access Business Group, an affiliate of Amway.

Amway chairman Steve Van Andel and president Doug DeVos said in a joint statement that the company’s collaboration with MEDC and The Right Place is critical in driving long-term business growth across the state.

"By bringing a second nutrition product manufacturing plant to our home market of Michigan, we are helping our distributors meet the growing customer demand for our NUTRILITE brand products," the statement said.

Other investments include a $24m in a new nutrition powder products plant in Ada, Michigan, which is expected to commence production this year and a new $42m granulation facility to support tablet manufacturing in Buena Park, California.

The company is also investing $31.8m in a new extraction and concentration operation for ingredients grown at its organic farm operations, in Quincy Washington.

Statistics showed that the nutrition product sales last year were 45%, or $4.7bn, of Amway sales.

NUTRILITE, a global vitamins and dietary supplements brand, has farms located in Washington, Mexico and Brazil.

The brand’s products are manufactured by Access Business Group.