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Ingredient guide

Best time to take apple cider vinegar pills

Written by the Full Measure editorial team, which sells supplements. Approved for publication by the Full Measure owners. Updated .

Drafted with AI assistance from the sources listed below. How we write these

Quick answer

No study has tested the best time of day for apple cider vinegar pills. Meal studies gave liquid vinegar at the start of a meal, and capsules release acetic acid more slowly than a drink, peaking in the blood about 30 minutes after a dose. Swallow pills with a full glass of water.1,2,3

Key facts

  • In the tablet comparison study, the vinegar, tablets or water came immediately before a test meal.1
  • Vinegar drinks taken with breakfast caused nausea in a study of 16 young adults.4
  • A vinegar tablet injured the esophagus in a published case, a reason to take pills with plenty of water.3
  • Crushed tablets dissolved in water gave a result between whole tablets and liquid vinegar, which the authors took as a sign of slow dissolving.1

Around meals, because that is how vinegar was studied

In the meal studies, liquid vinegar was diluted in water and taken at the start of the meal.1

Researchers time vinegar to meals because acetic acid appears to work on digestion while food is present: it seems to slow the intestinal enzymes that split sugars and the emptying of the stomach. The authors of the tablet study say these mechanisms are still uncertain.1

Some studies used a fixed daily time instead. In one, participants took 30 mL in a glass of water each morning before breakfast for two weeks.5

Pills arrive later than a drink

A capsule has to dissolve before it releases anything. In the absorption study, acetate from capsules reached its highest level in the blood about twice as late as acetate from a vinegar drink with the same 750 mg of acetic acid.2

In the meal study, tablets swallowed whole at the start of the meal had no measurable effect over the next hour. When the same tablets were crushed and dissolved in water first, the result fell between plain water and liquid vinegar, which the authors read as a sign of slow dissolving. Taking a pill earlier might change that, but no study has tested it.1

Morning or night?

We found no study comparing morning and evening doses of vinegar in any form. Trials paired vinegar with breakfast or with a test meal, so if you take pills, the meal you pair them with is a more meaningful choice than the clock.1,4

Our label does not name a time of day. It says to take two capsules daily with 6 to 8 ounces of water.

Taking pills without irritation

The pill injury on record that we found was to the esophagus, from a vinegar tablet. Swallow capsules with a full glass of water, as the label says, and ask your doctor first if you have trouble swallowing.3

In a study of 16 healthy young adults, vinegar drinks taken with breakfast caused more nausea than a control drink, and the lower appetite that followed was largely explained by that nausea.4

In that study the less pleasant the drink tasted, the stronger the nausea, and taking it with a meal did not stop it. If vinegar in any form makes you feel sick, that is a reason to stop, not to push on.4

Timing and medicines

Liquid vinegar at the start of a meal lowered the rise in blood sugar over the following hour in a small study of healthy adults. If you use insulin or another medicine that lowers blood sugar around meals, ask your doctor before adding vinegar at mealtimes.1

For other medicines, ask your pharmacist whether to separate them from vinegar products rather than choosing a gap yourself.

Questions people ask

Should I take apple cider vinegar pills before or after a meal?

The meal studies gave vinegar at the start of the meal. No study has compared before and after for pills, and in the one direct test, tablets swallowed whole at mealtime had no measurable effect.1

Can I take apple cider vinegar pills at night?

No study has tested night-time doses against daytime ones. Whenever you take them, take them with a full glass of water, as the label directs.3

Is it better to take apple cider vinegar pills on an empty stomach?

There is no evidence for it. The studies paired vinegar with food, and vinegar caused nausea in some people even when taken with breakfast.1,4

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Sources

  1. Feise NK, Johnston CS. Commercial Vinegar Tablets Do Not Display the Same Physiological Benefits for Managing Postprandial Glucose Concentrations as Liquid Vinegar. J Nutr Metab. 2020;2020:9098739. Opened 2026-10-01.
  2. Sugiyama S, Fushimi T, Kishi M, et al. Bioavailability of acetate from two vinegar supplements: capsule and drink. J Nutr Sci Vitaminol (Tokyo). 2010;56(4):266-9. Opened 2026-10-01.
  3. Hill LL, Woodruff LH, Foote JC, Barreto-Alcoba M. Esophageal injury by apple cider vinegar tablets and subsequent evaluation of products. J Am Diet Assoc. 2005;105(7):1141-4. Opened 2026-10-01.
  4. Darzi J, Frost GS, Montaser R, Yap J, Robertson MD. Influence of the tolerability of vinegar as an oral source of short-chain fatty acids on appetite control and food intake. Int J Obes (Lond). 2014;38(5):675-681. Opened 2026-10-07.
  5. Hlebowicz J, Darwiche G, Björgell O, Almér LO. Effect of apple cider vinegar on delayed gastric emptying in patients with type 1 diabetes mellitus: a pilot study. BMC Gastroenterol. 2007;7:46. Opened 2026-10-01.

This page is information, not medical advice. Talk to your doctor or pharmacist about your own situation.