Alcohol: It is not known whether it is safe to consume alcohol with Renvela 800mg Sachet. Please consult your doctor. Pregnancy: Renvela 800mg Sachet may be unsafe to use during pregnancy. Although there are limited studies in humans, animal studies have shown harmful effects on the developing baby. Your doctor will weigh the benefits and any potential risks before prescribing it to you. Please consult your doctor. Breastfeeding: Renvela 800mg Sachet is probably safe to use during breastfeeding. Limited human data suggests that the drug does not represent any significant risk to the baby. Driving: It is not known whether Renvela 800mg Sachet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Kidney: Renvela 800mg Sachet is safe to use in patients with kidney disease. No dose adjustment of Renvela 800mg Sachet is recommended.However, regular monitoring of calcium levels is advisable in these patients. Liver: Renvela 800mg Sachet is probably safe to use in patients with liver disease. Limited data available suggests that dose adjustment of Renvela 800mg Sachet may not be needed in these patients. Please consult your doctor.