The quantity of the consignment sent to Nigeria through Guinea Bissau could not be ascertained yesterday.
President Buhari said Nigeria would take the drug through intensive test to determine its suitability.
A source on Sunday said: “For our consignments in Guinea Bissau, Madagascar has asked Nigeria to pay over €170,000 (N78, 200,000). We have received the invoice because the African country has made us to realise that the drugs are not being given out free.
“We are being asked to pay for the drugs yet to be validated. Since the AU directed the supply of the drugs to African countries, we may have no choice than to pay for it.
“This payment may, however, be one-off because mass importation of the drugs from Madagascar will not be cost effective. By the time we take into account the cost of freight, the amount will be too high.
“This is why we are looking at local options available to us as a nation.