तुवरी
Potassium aluminium sulphate, the same salt as Sphatika. Tuvari and Kankshi are the Rasashastra names for it among the uparasa.
Parthiva · mineral origin · Uparasa — as Kankshi
SHODHANA — NO MINERAL DRAVYA IS USED RAW
Heated until it melts and puffs into a light white mass.
TRADITIONAL VIEW, WITH SAFETY LIMITS
Hindi name: Phitkari
What the texts say Tuvari does
What the evidence says. Alum's astringent and antimicrobial action is established; the internal classical uses are not.
Side effects and limits
Aluminium-bearing, and chronic aluminium exposure matters in renal impairment. Concentrated alum is a mucosal irritant.
Avoid or ask first: Renal impairment.; Prolonged internal use.
A traditional classification, not a recommendation. The full safety record is below.
AS THE CLASSICAL TEXTS AND THE API PRESCRIBE
| Shuddha bhasma | 125–250 mg |
| Anupana | Madhu · Ushnodaka |
| Kala | Adhobhakta |
Chiefly external. The same substance is entered separately as Sphatika because the texts treat it under both names and a reader looking up either should find it.
Reported from Sharangadhara Samhita and the Ayurvedic Pharmacopoeia of India. Laisha states what the texts prescribe; it does not recommend. No quantity here is adjusted for a particular person — not for agni, koshtha, bala, age, pregnancy, kidney or liver function, or anything already being taken.
| Rasa | KashayaAmla |
| Guna | LaghuRuksha |
| Virya | Ushna |
| Vipaka | Katu |
| Doshakarma | Kaphapittahara. |
| Upayukta anga | Shuddha tuvari |
Tuvari is classed among the Uparasa — as Kankshi.
| English | Alum |
| Hindi | Phitkari |
| Kannada | Patika |
Rasa, guna, virya, vipaka and karma are recorded as the classical texts give them, with the text and section named so a student can open the book and check.
Ammonium alum is sold as phitkari and is a different salt. Tuvari, Kankshi and Sphatika are three names for one substance and a student should know they are not three drugs.
Potassium aluminium sulphate, the same salt as Sphatika. Tuvari and Kankshi are the Rasashastra names for it among the uparasa.
A WAY TO REMEMBER IT
Tuvari is from tuvara, astringent — the taste is the name. Kankshi is the other classical name for the same salt.
Used in raktapitta, in vrana and as a gargle, and as a mordant in the preparation of other dravya.
Constituents. Potassium aluminium sulphate, the same salt as Sphatika. Tuvari and Kankshi are the Rasashastra names for it among the uparasa.
| Status | Alum's astringent and antimicrobial action is established; the internal classical uses are not. |
| The honest gap | Mineral and animal dravya are far less studied than plant dravya, and what study exists is chiefly characterisation and toxicology rather than clinical efficacy. |
Aluminium-bearing, and chronic aluminium exposure matters in renal impairment. Concentrated alum is a mucosal irritant.
| Contraindications | Renal impairment. Prolonged internal use. |
| Interactions | Any oral drug — aluminium binds in the gut. Separate by two hours. Citrate in any form sharply increases aluminium absorption — the interaction most often missed. Tetracyclines, fluoroquinolones and bisphosphonates — absorption reduced. |
| Pregnancy and breastfeeding | Not established as safe internally. |