The NFL declined to identify the substance that violated the league’s drug policy.
The 22-year-old’s suspension is effective immediately, the league said. He will be eligible to return to the roster Dec. 3 after the team’s game against the Miami Dolphins.
Bolden, who has missed the Patriots’ last two games with a knee injury, set career-highs in rushing attempts and yards against the Buffalo Bills on Sept. 30, finishing with 16 carries for 137 yards and a touchdown.
For the season, Bolden has totaled 43 rushes for 234 yards and two touchdowns.
The Patriots are 5-3 to lead the American Football Conference East. They host the Bills tomorrow.
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