Answer
No. Grapefruit can increase amlodipine exposure and cause an unpredictable increase in its blood-pressure-lowering effect.
Sources for this answer
- Amlodipine / Valsartan 5 mg / 160 mg film-coated tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.