How many hours after drinking red wine can one drink coffee?

Dec 08, 2025 Source: Cainiu Health

Dr. Huang Yuhong

Introduction

Wait at least 4–6 hours after drinking red wine before consuming coffee. The alcohol in red wine and the caffeine in coffee can have combined stimulating effects on the cardiovascular and nervous systems. Consuming them close together may cause discomfort, so sufficient time should be allowed for metabolism. Alcohol dilates blood vessels and depresses the central nervous system, whereas caffeine constricts blood vessels and stimulates the central nervous system.

Wait at least 4–6 hours after drinking red wine before consuming coffee. The alcohol in red wine and the caffeine in coffee can have a combined stimulating effect on the cardiovascular and nervous systems. Consuming them too close together may cause discomfort, so sufficient time should be allowed for metabolism.

Alcohol dilates blood vessels and suppresses the central nervous system, while caffeine constricts blood vessels and stimulates the central nervous system. Their effects are opposing, and taking them shortly after each other can increase stress on the cardiovascular system, potentially causing palpitations, dizziness, and blood pressure fluctuations—especially posing higher risks for individuals with hypertension.

The body requires time to fully metabolize alcohol, typically processing about 10–15 milliliters per hour. A moderate amount of red wine usually takes 4–6 hours to be mostly metabolized. Drinking coffee after this interval helps prevent simultaneous interactions between the two substances, reducing stimulation to the nervous and cardiovascular systems.

After drinking red wine, you may drink warm water to promote metabolism. Avoid intense physical activity during this period. Wait until you are fully alert and the alcohol has been metabolized before drinking coffee. Control your intake of both red wine and coffee to avoid excessive consumption, and always consider your personal health condition, maintaining an appropriate time gap between drinks.

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Can you still drink dry red wine that has expired by 2 years?

It is not recommended to drink red wine that has expired for 2 years. However, if the red wine has been stored in a cool, dry place with proper sealing, and there was no leakage or bottle damage before opening, it might not have noticeably deteriorated even after 2 years past its expiration date. If, upon opening, the wine appears clear, has no off-odors, and tastes normal, you may cautiously take a small amount. Nevertheless, pay close attention to your body's reaction after consumption and avoid drinking excessively.

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Can you drink red wine if there are black sediments at the bottom?

In general, whether red wine with black sediment at the bottom is safe to drink depends on the specific composition of the sediment and the condition of the wine. If there are any concerns or physical discomfort, it is advisable to avoid consumption and consult a professional promptly. For daily storage, red wine should be kept in a dark, temperature-stable environment, avoiding vigorous shaking that may disturb sediments. Before opening, the bottle can be stored upright for several hours to allow the sediment to settle naturally at the bottom.