Dear Customer, Thanks for providing quick additional information.
It is good to hear that you had endoscopy done with normal results.
As such gastritis and acid reflux are very common condition, and can be easily managed with dietary changes and medications.
Prilosec contains Omeprazole. Some of the common side effects with Omeprazole are-
-cold symptoms such as stuffy nose, sneezing, sore throat,
-stomach pain, gas
As such long term use of prilosec may cause elevations in serum creatinine, rare reports of interstitial nephritis. Such cases are very slim. So, basically it is safe for kidneys.Ranitidine
works by blocking histamine H2 receptors which are found on the cells in the stomach lining.
As such this would not affect kidneys, chances of getting kidney disease with such use are slim.
As such slight discomfort, in lower back can be due to muscle pull.
It doesn't sounds to be related with medication side effects.
It is possible that you may have kidney stone, and this has caused your symptoms.
I would recommend that you visit your primary doctor for evaluation and get it managed.
Please let me know how I can be of further assistance.
My goal is to provide you with excellent service – if you feel you have gotten anything less, please reply back, I am happy to address follow-up questions.