Queiroz had admitted exchanging harsh words with anti-doping doctors during a surprise visit to Portugal's World Cup training camp in May but said he was simply expressing his annoyance at having his players' rest disturbed.
The Portuguese Football Federation (FPF) said on its website that its disciplinary council "considered partially valid the accusation against Queiroz". It dismissed a charge of obstructing the agents, which could have cost the coach his job.
"The FPF management laments the remarks made by the national squad coach" to anti-doping officials, the federation said.
The suspension means Queiroz will miss Portugal's 2012 European Championship qualifiers on September 3 at home against Cyprus and away to Norway four days later.
Queiroz's first spell as coach of Portugal ended in acrimony after he failed to qualify the side for the 1994 World Cup and he subsequently resigned and criticised the federation.
