Pharmacies are your best bet. Especially, dental centered ones. You can also try dental clinics if they sell them. To start off, use the following link. https://www.google.com/search?q=dentist+pharmacies+in+ethiopia&ei=7hCLZL7kJbqE9u8P-puIiAg&oq=dentist+pharmacies&gs_lcp=ChNtb2JpbGUtZ3dzLXdpei1zZXJwEAEYADIFCCEQoAEyBQghEKABOggIABCiBBCwAzoICAAQigUQkQI6CwguEIoFENQCEJECOgsILhCABBDHARDRAzoFCAAQgAQ6CAguEIoFEJECOgcILhCKBRBDOgcIABCKBRBDOg0ILhCKBRDHARDRAxBDOgoILhCKBRDUAhBDOgoIABCKBRDJAxBDOggIABCKBRCSAzoICC4QgAQQ1AI6CAgAEIAEEJIDOggIABCABBDJAzoLCC4QgAQQxwEQrwE6BggAEBYQHjoICAAQFhAeEA86BwgAEA0QgAQ6CggAEA0QgAQQyQM6CAghEBYQHhAdSgQIQRgBUPkLWKMmYL4yaAJwAHgAgAHgBIgBrDySAQkyLTQuNi42LjOYAQCgAQGwAQDAAQHIAQU&sclient=mobile-gws-wiz-serp&bshm=lcbse/2#trex=m_dg:1,m_r:1,m_t:gwp,rc_num:20,rc_q:Melayan%2520pharmacy,ru_gwp:0%252C6,ru_num:20,ru_q:Melayan%2520pharmacy,ru_stick:H4sIAAAAAAAAAB1Qu00DURCUAxAh0iEHL7oS9v8pAokWTtYhBwZbduR2qIC6qII5B0_anTc7O7Mvz-ONuSyZRSPYqUXUY0yeziFp1VwuAazHVJ7aYDVTpYFYNCbriCaSdjdxb1cHWA6aNQVRQKuTAXKWSFdiC8oQszGphIFtZYFSuE3hSbi2Bi8jiMWYNpSkDD_kpZIMfgB1oi5okYNMwaUJFIbEwjJcgcCVNlA1xRgjAwyqa7dsF3AXIyZGZiqGP7jNxNIuV-uk9EjIThFWGHMDDydoWBlTY2-rmqVkAkXIMW2xuLORvolDSRUXcKhiSXR7QVFDtgu08eZf-KGr_EgVKKoLvYDB3PS72_3t9h_r-XJa5-V0O8-3dbkejvPn-frz9Pq-npb78j1fjsv1aznc_wHNkCOH3QEAAA,trex_id:Wfy5Lc Hope you find it. Good Day!