Pheu Thai's No 2 party-list candidate Somchai told reporters that he also went to Myanmar last week and met Thaksin, who spent a day there.
Thaksin went to a temple in Myanmar to take part in a merit-making ceremony to fix his karma, and had asked him about the political situation in Thailand, he said.
"I told Thaksin that the situation remains turbulent and he gave me support and told me to be careful when doing anything," Mr Somchai said.
Noppadon Pattama, Thaksin's legal adviser here, said Thaksin did not go to Myanmar to make any business deals and called on his opponents, particularly the "Group of 40 Senators", not to "go overboard" in criticising his boss.
"Please don't just relate everything Thaksin does to politics. It's certain that some Pheu Thai core members and former MPs went to meet him (in Myanmar) but that's usual since he was near Thailand," Mr Noppadon said.
He said Thaksin was concerned about the Thai political situation and the impact of the continuing anti-government protest on the country's economy, tourism and investment.
"Thaksin wants the situation to be restored quickly by adhering to the democratic process, wants the general election to move forward, and calls on his opponents to accept the people's decision.
"Thaksin told me that all problems can end through negotiations, even the World War ended through negotiations," the lawyer said.