Cassava Supplement, Fertility Supplement for Twins and Healthy Pregnancy (Cassava Root Extract) - Strongest Product on the Market! by Cassanovum. $19.30. Manufacturer Tested to guarantee ISO9001:2000 MHRA International Standards. Will boost overall fertility and will prepare for healthy pregnancy. Enhanced with Folic Acid Recommended Daily Allowance. 100% Natural ingredients, Strongest Cassava Root Extract on the market!. The manufacturer is US FDA and US EPA regi...