For most healthy adults, a small to moderate amount of sorrel drink (for example 1 small glass or cup per day) is generally considered a reasonable upper limit, as long as it is prepared in normal “food-like” strength and not as a highly concentrated medicinal extract. There is no established official daily “safe dose,” so the key is moderation and paying attention to individual risk factors like kidney issues or pregnancy.

What “safe daily amount” really means

  • Sorrel (the leafy herb) is high in oxalic acid, which can irritate kidneys and contribute to kidney stones in large or frequent doses.
  • Health sources classify it as possibly safe in normal food amounts but possibly unsafe in large amounts or medicinal doses.
  • A reported fatal case involved about 500 g of sorrel leaves at once, which is far more than what goes into a typical homemade drink.

For a typical homemade sorrel beverage (like a lightly brewed tea or Caribbean-style drink), many nutrition and herbal references implicitly treat 1 cup (about 240 ml) per day as within a “food-like” amount for healthy adults, especially if the rest of the diet is varied and not very high in other oxalate-rich foods like spinach or rhubarb.

Who should be extra careful or avoid it

You should limit sorrel or talk to a doctor first if any of these fit:

  • History of kidney stones, kidney disease, gout, or rheumatism, because oxalic acid can aggravate these conditions.
  • Pregnancy or breastfeeding, since higher or medicinal intakes are classified as possibly unsafe and not well studied.
  • Children, who are more sensitive to oxalic acid; large amounts are considered possibly unsafe.

In these cases, many medical references suggest avoiding regular sorrel drinks or using them only under professional guidance.

Practical daily guidelines

For a generally healthy adult:

  • Aim for:
    • Up to about 1 small glass (150–250 ml) of sorrel drink per day, brewed at normal culinary strength.
  • Spread intake over the week:
    • Drinking it a few times a week instead of every single day lowers the oxalate load.
  • Hydrate and diversify:
    • Drink plenty of water and keep the rest of your diet balanced with lower-oxalate greens to reduce kidney stone risk.

If you notice stomach upset, burning in the mouth, changes in urination, or pain in the side or back, stop drinking it and seek medical advice promptly.

Sorrel drink vs. other forms

  • Culinary tea / light drink: Usually a small, food-level intake when used like a herbal tea.
  • Concentrated extracts or supplements: Can deliver much higher doses of sorrel and oxalic acid; medical sources warn that “large amounts” may damage kidneys, liver, or stomach.
  • Mixed herbal products (like sinus formulas): Use very small standardized doses (e.g., 36 mg sorrel per dose), which shows how cautious formal products are with quantity.

If your sorrel drink is extremely strong, heavily reduced, or you sip many large glasses per day, your intake might move into that “large amount” territory, and it would be safer to cut back.

Simple rule of thumb

  • If you are healthy:
    • Treat sorrel drink as an occasional herbal beverage, not an all-day water replacement; 1 cup a day (or less, a few times a week) is a cautious, reasonable pattern.
  • If you have kidney issues, are pregnant, breastfeeding, or giving it to a child:
    • Avoid regular sorrel drinks or get personalized advice from a healthcare professional before using it.

Information gathered from public forums or data available on the internet and portrayed here.