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No, for a strict fast, Zero-Sugar Gatorade breaks fasting aims; in looser time-restricted plans, a small serving may fit but can nudge insulin.

No, Spark during intermittent fasting adds calories and actives that end a strict fast; stick to water, black coffee, or plain tea.

No—during a fasting blood test, plain water is usually fine, but any other drink can skew results and should be avoided unless your clinician says otherwise.

No, wine breaks a fasting window because it adds calories and alcohol, interrupting the metabolic state you’re trying to maintain.

Yes. Whisky during a fasting window adds calories and ends the fast; keep any pour for your eating window if you practice time-restricted eating.

Yes, whey protein ends a fast due to calories; use it during your eating window for results.

Yes, during fasting you can have plain water, black coffee, and unsweetened tea; any drink with calories breaks the fast.

Yes, plain water is allowed during fasting for the gestational glucose test unless your clinic says otherwise.

Yes, during a 24-hour fast, plain water is allowed; the only common exception is medical NPO orders before anesthesia or certain tests.

Yes, for CT preparation you can usually drink water up to 1–2 hours before the scan unless your hospital gives different instructions.