Answer

In Sajala Upvas, one generally takes only water. So salt, lemon water, electrolyte powders, ORS, glucose, or flavored drinks are not considered part of a traditional Sajala Upvas.

If salt or electrolytes are taken, the fast would generally no longer be understood as a proper Sajala Upvas in the traditional sense.

Explanation

In Jain practice:

• Nirjala Upvas means fasting without water.
• Sajala Upvas means fasting with water.

Here, “with water” means plain water, usually taken according to the rules followed in one’s tradition, family, or under guidance of a guru.

Salt or electrolyte drinks are not plain water; they are nourishment/supportive intake and therefore are generally avoided during Upvas.

Spiritual Understanding

The purpose of Upvas is not only physical fasting, but also reducing bodily dependence, practicing self-control, and turning the mind toward dharma, repentance, and inner purification.

Takeaway

For a proper Sajala Upvas, take plain water only. If you have health concerns, weakness, low blood pressure, or medical needs, it is better to follow medical advice and choose a lighter form of tapas rather than risk harm.