Answer

Yes, after doing Devasi Pratikraman, one may drink water only if the proper Pachchakkhan taken allows it.

For taking medicine at night, during Pratikraman one should take an appropriate Pachchakkhan that keeps permission for medicine and water needed with medicine.

Explanation

In Jain practice, after evening Pratikraman, many people take a vow not to eat or drink until the next morning. This is commonly connected with Chauvihar or Tivihar.

• Chauvihar: No food and no water after sunset/night.
• Tivihar: No food, but water may be allowed according to the vow and tradition.

If someone needs medicine at night, they should not casually break the vow. Instead, they should take Pachchakkhan in a way that clearly keeps an exception for:

• necessary medicine, and
• the minimum water needed to take that medicine.

This is often done by taking a Chhuti or exception for medicine while taking Pachchakkhan.

Spiritual Understanding

Jain Dharma values both Tap and carefulness. Fasting and night restraint are spiritually beneficial, but medicine required for health should be handled honestly and with proper vow clarity.

The important point is:

• Do not take a strict Chauvihar Pachchakkhan if you already know you must take medicine with water at night.
• Instead, take the Pachchakkhan with a clear exception for medicine.
• Use only as much water as needed.

Takeaway

If you need night medicine, take Pachchakkhan with permission for medicine and the minimum required water. For the exact wording, follow your family tradition or ask your Guruji, Upadhyayji, or knowledgeable Jain elder, because Pachchakkhan wording can differ by tradition.