I am not a healthcare professional. Neither baking soda is for treatment of gout in mainstream medicine. The following is for info only. Please obtain medical advice from your doctor.
1. Baking soda can elevate blood pressure. Check with your doctor before trying baking soda.
2. I took b.s. for a few weeks the first time I used it. Now I only use it occasionally. I would let your doctor answer your question.
3. Nifedipine (Adalat GITS) causes gout in 1% of the users. On the other hand, losartan/cozaar (an ACEII receptor blocker) can lower both the blood pressure and the blood uric acid level, thus is beneficial for gout. It is possible your gout is caused or aggravated by nifedipine. You may like to discuss with your doctor about replacing Nifedipine with Losartan.
Good luck.