Can I take Isabgol or Triphala while fasting?

No. Please avoid Ayurvedic medicine during the fast. 

• Ayurvedic medicines may be plant-based and herbal, and safer than allopathy medicines, but will interfere with the fast. 
• Eating nutrient rich juices will give your praanshakti all the support to detoxify and remove the root cause of any problem that you are experiencing.
• You can also use wet packs and enema to naturally eliminate the toxins present in your body.