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Performance

ZumXR Delayed Release Caffeine

Also known as: ZumXR DR caffeine, delayed-release caffeine, enteric-coated caffeine

B
Evidence

ZumXR Delayed Release is a proprietary delayed-release caffeine formulation engineered to begin absorption after a set period, providing timed mental stimulation without an immediate jolt. It is useful for customizing caffeine timing throughout the day.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Timed mental alertness
  • Afternoon energy boost (without morning jolt)
  • Customizable caffeine timing
  • Sustained focus with controlled onset

How it works

  • Delayed-release matrix technology (likely enteric-coated or pH-sensitive)
  • Caffeine absorption begins after gastric passage
  • Adenosine receptor antagonism at specified time

Dosage

Typical range
100-300 mg daily
Timing
Morning (takes effect 1-2 hours post-ingestion) or early afternoon for afternoon boost
With food
Typically taken with food for reliable delayed-release activation
Duration
Effects begin 1-2 hours after ingestion; sustained for 5-7 hours
Special populations
Avoid in evening; limit total daily caffeine to <400 mg

Forms

  • capsule· 70/100

Safety

Common side effects

  • Delayed-onset jitteriness (minimal at onset)
  • Sleep disruption if taken late in day
  • Mild nervousness

Contraindications

  • Cardiovascular disease
  • Uncontrolled hypertension
  • Severe anxiety
  • Pregnancy and lactation
  • Caffeine sensitivity
  • Severe GI conditions affecting absorption timing

Evidence notes

Delayed-release caffeine formulations are established; however, ZumXR-specific clinical data is limited. General delayed-release technology is well-documented for nutrient delivery.

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.