Possible Interactions
If you are being treated with any of the following medications, you should not use vitamin B5 supplements without first talking to your health care provider.
Antibiotics, Tetracycline -- Vitamin B5 interferes with the absorption and effectiveness of the antibiotic tetracycline. You should take B vitamins at different times from tetracycline. All vitamin B complex supplements act in this way and should be taken at different times from tetracycline.
Drugs to treat Alzheimer's disease -- Vitamin B5 may increase the effects of a group of drugs called cholinesterase inhibitors, which are used to treat Alzheimer's disease. That might lead to severe side effects. You should not take these drugs with B5 unless under a doctor's supervision. Cholinesterase inhibitors include: