Nigerian MPs filed a petition saying she had been suspended for six months by sexual harassment by the Senate president.
Natasha Akpoti-uduaghan first brought charges against the country's top politician, Godswill Akpabio, in an interview last Friday.
After the Ethics Committee dismissed the petition based on procedural grounds, it recommended Uduaghan's suspension, saying she had ridiculed the upper house of the National Assembly.
Some senators argued that her suspension was cut to three months, but most voted to stick to the six-month suspension recommended by the Ethics Committee.
Women's rights activist Hadiza Ado told the BBC that Senator Uduaghan's moratorium was “a miserable day for women in Nigeria”.
Later, Uduaghan described its suspension as “an injustice that will not be maintained.”
She vowed to continue to treat her treatment.
The allegations have dominated discussions throughout Nigeria since they first took place a week ago.
Many people and groups at the height of the location call for transparent investigations.
On Wednesday, two groups of protesters gathered at the parliamentary grounds in the capital Abuja – one supported Akpabio and the other supported his colleagues, calling for “Akpabio must go.”
Mrs. Ado, who founded the Women and Children Initiative, said: “We have been keenly following the events at the conference and hope to investigate Natasha's allegations.”
“We can only say that today is a sad day for Nigerian women to fight for liberation. Only four of the 109 senators are women and are now suspended,” she said.
Many women on social media have also expressed anger at the suspension, some calling it “oppression.”
During her suspension, Uduaghan will be banned from entering the National Assembly venue and her office will be locked.
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