Generally, no. In ekāśan (one meal in one sitting), Jain practice emphasizes restraint and purity, and stimulants like tea or coffee are discouraged outside the meal. Most traditions prefer plain boiled water if thirst arises and do not allow caffeinated beverages as part of the ekāśan observance. If you need caffeine for health reasons, seek guidance from your guru or follow your specific tradition’s guidance.

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