The arrests between 19 and 30 of April 2021 are part of an ongoing operation targeting drug dealers and suppliers.
The arrests were made at six different locations in Tongatapu.
Police also seized 8.80 grams of methamphetamine, 199.11 grams of cannabis and drug utensils.
The seven accused between the aged of 26 to 40 will appear at the Magistrate Court at a later date.
Deputy Commissioner Tevita Vailea said that Police are committed to disrupt and detect the supply of drugs and hold those responsible to account.
