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Two-Aged Decoction

二陳湯 · èr chén tāng

TCM's classical base formula for what it calls 'phlegm-damp,' the heavy, sluggish quality that builds up from poor digestion.

What it's for

The name 'two-aged' refers to two of its herbs that work better with age: pinellia and tangerine peel, both prepared and stored before use. Together they break up the heavy, congested feeling that TCM calls phlegm-damp, often showing up as a foggy head, a thick coated tongue, nausea, or a constant feeling of mucus. Practitioners use it as a foundation that other phlegm-resolving formulas get built on.

This formula is for you if…

  1. Wet cough with lots of white phlegm that comes up easily

    coughing up a lot, throat clearing all day

  2. Nausea and a stuck, full chest

    queasy, sometimes vomiting, fullness in the chest

  3. Heavy-headed and foggy

    head feels packed and cloudy, body feels waterlogged

Best fit if at least 2 of these sound like you, especially the wet, easily-coughed-up phlegm.

You might also notice

  • Heart pounding from the phlegm rising
  • White, moist or greasy tongue coating
  • Worse after dairy, sugar, or cold drinks

Not your match if…

  • Your cough is dry with little phlegm and a red tongue
  • You have yellow sticky phlegm with thirst and red face
  • You feel parched and dehydrated

What's in it

How to take it

Two-Aged Decoction is sold ready-made as Er Chen Teapills (二陳丸).

Standard dose: 8 pills, 3 times a day.

We're working on a Field Guide–recommended source for this formula. In the meantime, look for Plum Flower brand at a TCM pharmacy or specialty retailer.

Talk to a qualified TCM practitioner before taking this regularly, especially if you're pregnant, breastfeeding, or take medication.

Safety

  • Designed for damp-phlegm patterns with a heavy, sluggish quality. It's not the right pick for dry coughs or for the dry, parched feeling that comes with yin deficiency.
  • Pinellia needs to be properly processed before use. Raw pinellia is toxic. Only use products from a reputable TCM source.
  • Talk to a qualified TCM practitioner before using this regularly, especially if you're pregnant, breastfeeding, or take medication.