Consuming an excessive amount of tamarind can have a number of unfavourable consequences on the body, including the following:
Digestive Problems: Tamarind is a natural laxative and, if ingested in excessive amounts, can induce digestive troubles such as diarrhoea, abdominal cramps, and bloating. Tamarind has been used medicinally for thousands of years.
Tooth decay Tamarind has a high sugar content and an acidic nature, both of which can contribute to tooth decay if significant amounts are taken.
So, basically, if you don’t want diarrhoea and want to keep your teeth, keep it to moderation.