Table showing safety of drugs in pregnancy and lactation (Drugs starting with R)
| Drug | Pregnancy category | Use during lactation |
| Rabeprazole | B | Use with caution |
| Raloxifene | X | Unsafe |
| Ramipril | D | Use with caution |
| Ranitidine | B | Safe |
| Repaglinide | C | Unsafe |
| Reteplase | C | Unsafe |
| Ribavirin | X | Unsafe |
| Riboflavin | A | |
| Rifabutin | C | Unsafe |
| Rifampicin | C | Safe, infant may develop jaundice |
| Riluzole | B | Unsafe |
| Rimantadine | C | |
| Risperidone | B | Use with caution |
| Ritodrine | B | |
| Rivastigmine | B | Use with caution |
| Rocuronium | B | Use with caution |
| Rofecoxib | C,D in 3rd trimester or near delivery | |
| Ropinirole | B | Unsafe |
| Rosiglitazone | C | Unsafe |
| Rosuvastatin | X | Unsafe |
