✓
No active regulatory warnings
Sources: FDA MedWatch, EMA EudraVigilance, WHO VigiBase, WADA Prohibited List · 2026-05-29
Updated: 2026-05-29 · v2.0 · Prof. G. Pkhakadze, MD, MPH, PhD📎 Cite 📄 PDF
1 Identity

Pre-Workout Blends

Multi-ingredient: caffeine + beta-alanine + citrulline + etc.
Limited EvidenceEvidence: ModerateOther
Pre-workout supplements are multi-ingredient formulas typically containing caffeine (150–400 mg), beta-alanine (1.6–3.2 g), citrulline (3–8 g), creatine (3–5 g), and various 'pump' and 'focus' ingredients [1]. The global pre-workout market exceeds $15 billion. Evidence supports individual ingredients (caffeine, creatine, beta-alanine, citrulline) but NOT proprietary blends that hide individual doses. The primary safety concerns: excessive caffeine (cardiac events), proprietary blend under-dosing, undeclared stimulants (DMAA, DMHA, synephrine), and beta-alanine paresthesia (harmless but alarming) [1].
3
Pre-Workout Blends
Multi-ingredient: caffeine + beta-alanine + citrulline + etc.
Limited EvidenceEvidence: ModerateOther
Clinical verdict: Pre-workouts are popular but problematic: evidence supports INDIVIDUAL ingredients (caffeine, creatine, citrulline, beta-alanine) at KNOWN doses, NOT proprietary blends hiding amounts. Three safety issues: (1) caffeine 300–400 mg/serving = 3–4 coffees (cardiac events in sensitive individuals); (2) undeclared stimulants (DMAA, DMHA found in FDA testing); (3) 'proprietary blend 10g' could be 9.9g maltodextrin + 100mg active ingredients. Buy open-label products or make your own [1].
RDA
Per label
Target range
N/A
Upper limit
Varies
Evidence
Moderate
Population dosing — click to filter
✅ USP Verified, NSF Contents Certified, ConsumerLab Approved
2 Risk self-assessment
See overview [1].
Select factors above to see your risk level
Clinical pearl for practitioners
SupplementIndex
Pre-Workout Blends
Multi-ingredient: caffeine + beta-alanine + citrulline + etc. · Limited Evidence · Evidence: Moderate
RDA
Per label
Upper limit
Varies
Evidence
Moderate
Clinical bottom line
Pre-workouts are popular but problematic: evidence supports INDIVIDUAL ingredients (caffeine, creatine, citrulline, beta-alanine) at KNOWN doses, NOT proprietary blends hiding amounts. Three safety issues: (1) caffeine 300–400 mg/serving = 3–4 coffees (cardiac events in sensitive individuals); (2) undeclared stimulants (DMAA, DMHA found in FDA testing); (3) 'proprietary blend 10g' could be 9.9g maltodextrin + 100mg active ingredients. Buy open-label products or make your own [1].
Do not miss
⚠ See overview for critical safety points [1]
Pregnancy
AVOID — caffeine + stimulants contraindicated in pregnancy [1].
4 Lab interpreter

See overview

<12 Deficient
12–20 Insufficient
20–50 Optimal
50–100 Excess
>150 Toxic
Your level:
Enter a value above
⚕ For healthcare professionals. Does not replace clinical judgment.
5 Quick facts
CategoryOther
Safety levelLimited Evidence
EvidenceModerate
RDAPer label
Upper limit (UL)Varies
Scientific nameMulti-ingredient: caffeine + beta-alanine + citrulline + etc.
See overview[1]
6 Dosage by population

Adults Moderate

See product label

Elderly Moderate

See product label
Consider reduced renal/hepatic clearance. Start at lower end of range.

Pregnancy Moderate

See guidance
AVOID — caffeine + stimulants contraindicated in pregnancy [1].

Pediatric Moderate

See guidance
Not recommended without specialist guidance [1].

Athletes Limited

Standard dose

Obesity Limited

Standard dose
Fat-soluble compounds may require dose adjustment in obesity.

Renal Limited

Consult specialist
Dose adjustment may be needed in renal impairment.

Vegan Moderate

Standard dose
See overview for dosing guidance [1].
7 Form comparison
FormBioavailabilityVeganCost/day
['Various commercial forms', 'standard', 'See product labels [1].']StandardCheck label
8 Clinical evidence

Strong evidence

See overview [1]. HIGH

Moderate evidence

See overview [1]. MODERATE

Insufficient evidence

See overview [1]. LOW
9 Safety

🚩 Red flags — when to stop and refer

● See overview for safety alerts [1]

Pregnancy

AVOID — caffeine + stimulants contraindicated in pregnancy [1].

Pediatric

Not recommended without specialist guidance [1].
10 Toxicity and overdose

11 Drug interactions
MAO inhibitors Major
Mechanism: Multiple sympathomimetic amines (caffeine, synephrine, tyramine) — hypertensive crisis [1].
Effect: See overview [1].
Action: See overview [1].
12 Supplement interactions
13 Laboratory monitoring
See overview Primary
Target: N/A · N/A
See overview [1].
14 Deficiency and prevalence
0%
[1]

Risk factors

• See overview [1].
15 Frequently asked questions
Key clinical point ▼
Pre-workouts are popular but problematic: evidence supports INDIVIDUAL ingredients (caffeine, creatine, citrulline, beta-alanine) at KNOWN doses, NOT proprietary blends hiding amounts. Three safety issues: (1) caffeine 300–400 mg/serving = 3–4 coffees (cardiac events in sensitive individuals); (2) undeclared stimulants (DMAA, DMHA found in FDA testing); (3) 'proprietary blend 10g' could be 9.9g maltodextrin + 100mg active ingredients. Buy open-label products or make your own [1].
16 Regulatory status
United States (FDA): Dietary supplement / restricted [1].
17 References
[1]Jagim AR, et al. Common ingredient profiles of multi-ingredient pre-workout supplements. Nutrients. 2019;11(2):254. doi:10.3390/nu11020254 REVIEW
[2]Harty PS, et al. Multi-ingredient pre-workout supplements: safety implications and ingredient analysis. J Int Soc Sports Nutr. 2018;15(1):41. doi:10.1186/s12970-018-0247-6 REVIEW
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19 Cite this page
Vancouver
Pkhakadze G. Pre-Workout Blends — safety profile [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 May 30]. Available from: https://supplement.ge/ingredients/pre-workout-blends/
APA 7th
Pkhakadze, G. (2026). Pre-Workout Blends — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/pre-workout-blends/
CC BY 4.0
🛡 SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
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Reviewed by Prof. G. Pkhakadze, MD, MPH, PhD
Editor-in-Chief, Georgian Medical Journal · Chair, PHIG
Last reviewed: May 2026 · Next: November 2026
This entry is provided for educational and public health purposes under CC BY 4.0. Consult your healthcare provider before starting any supplement. For corrections: info@accreditation.ge.
Publisher: PHIG · Editor-in-Chief: Prof. Giorgi Pkhakadze, MD, MPH, PhD