Patanjali Ayurved — Gashar churna

Generally Patanjali's products are very good, some times better than the same products being produced by multi national companies.
Recently, I bought in addition to other products, on suggestion from the shop executive, Gas Har churan for my acidity problem. I am 56 years old man, keeping good health, doing daily exercise & yoga. Having normal diet.
Now, whenever, I take this churan, there is no effect on my acidity problem, but my throat goes horse or rough. (probably, due to Aamchoor added in it)
This I bought about 10 days back from very big patanjali shop located at Kalkaji Market Dash Mesh chowk, New Delhi-110019.