Acharya Charaka gives a long reason for this, in short, due to its Pitta increasing property. It can cause excess heat in the body. Pipali) का औषधीय प्रयोग इस तरह कर सकते हैं। पिप्पली के इस्तेमाल की मात्रा एवं विधियां ये हैंः- दांतों के रोग में पीपली के औषधीय गुण से फायदा (Maricha Herb Benefits for Dental Disease in Hindi)

Intake of boiled barleyalong with half a teaspoon of long pepper + a teaspoon of ghee is useful to relieve bloating and gaseous distention of the abdomen. Charaka Chikitsasthana 5th chapter. Vrushya PippaliLong Pepper is a powerful stimulant for Digestive system and Respiratory system. It is a metabolic stimulant. It improves the functioning of the Liver. It detoxifies and rejuvenates the Lungs. It expels out mucus accumulated in the Respiratory Tract. It effectively treats Cold and Congestion. Samy, Ramar Perumal, Peter Natesan Pushparaj, and Ponnampalam Gopalakrishnakone. “A compilation of bioactive compounds from Ayurveda.” Bioinformation 3, no. 3 (2008): 100. pullquote]To improve sexual drive or libido, ayurvedic treatments combine pippali and ghee with ashwagandha for men and shatavari for women.[/pullquote] Go to: List of Pippali benefits] पिप्पली के सेवन से पेट के दर्द में लाभ (Pippali Uses in Relief from Abdominal Pain in Hindi)

But for a short period of a few weeks, up to a couple of months, based on disease, long pepper can be used. United States Department of Agriculture Agricultural Research Service. Classification for Kingdom Plantae Down to Species Piper longum L.. National Nutrient Database for Standard Reference Legacy Release [Internet]

Shah, Shreya S., Gaurang B. Shah, Satbeer D. Singh, Priyanshi V. Gohil, Kajal Chauhan, Khyati A. Shah, and Mehul Chorawala. “Effect of piperine in the regulation of obesity-induced dyslipidemia in high-fat diet rats.” Indian journal of pharmacology 43, no. 3 (2011): 296.