The Nigerian National Agency for Food and Drug Administration and Control (NAFDAC) has issued a public warning regarding a popular herbal mixture “Coco Samba.”

Testing revealed that the product contains excessive amounts of sildenafil, a prescription medication used to treat erectile dysfunction and pulmonary arterial hypertension.  Coco Samba was found to contain 150mg of sildenafil per 100ml, exceeding the maximum daily recommended dose.

The potentially dangerous levels were discovered after the product was seized by German customs.

“The product was seized by German customs and analysed by the German Official Medicines Control Laboratory (OMCL). The analysis report showed the product contained undeclared amounts of sildenafil (150mg), which is above the maximum daily dose for sildenafil,” the regulatory agency’s statement read in part.

Sildenafil can cause serious side effects, especially when taken in high doses or combined with other medications, including nitrates, which are commonly used for heart conditions. People with diabetes, high blood pressure, high cholesterol, or heart disease are at particular risk.

“Laboratory analysis conducted by the agency also confirmed the presence of undeclared sildenafil content.

“Sildenafil is a medicine prescribed for the treatment of erectile dysfunction and pulmonary arterial hypertension (PAH). It may interact with nitrates found in some prescription drugs (such as nitroglycerin) and may cause a significant drop in blood pressure that may be life-threatening.

“People with diabetes, high blood pressure, high cholesterol, or heart disease often take nitrates. The adult male population who are most likely to use this product with nitrates (in prescription drugs for cardiac conditions) is most at risk.”

NAFDAC is urging consumers to avoid using Coco Samba immediately, seek medical attention if they have already consumed the product and are experiencing any adverse effects and report any suspected Coco Samba products to the authorities.

The Pharmacy Board of Sierra Leone had also recently warned that it could not guarantee the quality and safety of the herbal drink.