Furlong and Henderson missed Ireland’s 37-27 victory over Wales at the Aviva Stadium on February 24 with hamstring problems sustained against Italy.
Prop Furlong was replaced after just three minutes of that encounter, with Henderson forced off at half-time in Dublin.
Ireland have a five-point lead at the top of the Six Nations table thanks to England’s defeat to Scotland, and the return of the forward duo will lift their hopes of securing the title.
Both men will train fully this week, according to the Irish Rugby Football Union, while Rob Herring also returns after struggling with an elbow problem.
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