Best Supplements for Intermittent Fasting 2026 — What to Take and When
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Intermittent fasting creates specific nutritional needs. We found the best supplements for IF practitioners to preserve muscle, support energy and minimize hunger.
⭐ Top Picks for 2026
A two-part multivitamin timed for fasting protocols. Morning formula supports energy during fasting windows, evening formula supports recovery and sleep. Covers all nutritional gaps from time-restricted eating.
✅ PROS
- Timed for fasting windows
- NSF Certified
- Covers nutritional gaps
- No iron in AM formula
- Pharmaceutical grade
❌ CONS
- Premium price
- Two separate products
Fat soluble vitamins need to be taken with a meal — save this for your eating window for best absorption. One of the most important supplements during any dietary protocol.
Check Price on Amazon USA → Check Price on Amazon India →Zero-calorie electrolyte capsules that will not break your fast. Sodium, potassium and magnesium to prevent depletion during extended fasting windows.
Check Price on Amazon USA → Check Price on Amazon India →🧠 Buying Guide
When choosing the best intermittent fasting supplements, consider quality certifications, your budget and specific goals. All picks include Amazon USA and India links with fast delivery options.
What to look for
- Third-party testing (NSF, USP, or Informed Sport certified)
- Transparent ingredient label with exact doses
- Appropriate dosage for your needs
- Reputable manufacturer with good manufacturing practices
🏆 Final Verdict
Thorne AM/PM Multi is ideal for IF practitioners wanting optimized nutrition timing. Electrolyte capsules are the most important fasting supplement — depletion causes headaches and fatigue. Take fat-soluble vitamins with your eating window meal.