Read Nightmare’s warning before building a stack
The current ProSupps Mr. HYDE Nightmare V2 is a caffeinated pre-workout. Its 30-serving label, used here with Jawbreaker packaging, specifies one 13.26 g scoop and 300 mg total caffeine. That total already includes tea-derived caffeine, caffeine anhydrous and coffee-derived caffeine. Natural sourcing does not remove caffeine from the calculation.
What the manufacturer actually directs
ProSupps instructs users to mix one scoop with 6–8 ounces of water 15–30 minutes before exercise, assessing tolerance with half a scoop initially. It says to avoid use within four hours of bedtime and not to combine Nightmare with other products containing caffeine or stimulants. These are restrictions, not a guarantee that following the timing will prevent sleep problems.
The warning limits use to healthy adults aged 18 or older and calls for physician consultation. It says not to use during pregnancy or nursing, with a known or suspected medical condition, or while taking prescription or over-the-counter medication. Do not exceed the recommended serving. Adverse effects call for stopping use and consulting a qualified medical professional.
Why another pre-workout is not a sensible add-on
Adding a caffeinated pre-workout, energy drink or stimulant-containing fat burner conflicts with Nightmare’s directions. Changing brands does not change that issue. Count caffeine from the rest of the day as well, including coffee, tea and products whose front label does not emphasize their caffeine.
FDA guidance describes 400 mg daily as an amount generally not associated with negative effects for most adults. It is not an individual safety guarantee, a single-serving recommendation or permission to add 100 mg to Nightmare. Sensitivity and medical circumstances vary, and the product’s own restriction still applies.
What about a stimulant-free pump product?
A stimulant-free label does not settle every combination question. Nightmare’s facts panel already includes 6 g citrulline, 3.2 g beta-alanine, alpha-GPC and L-theanine. Another blend can duplicate ingredients even without adding caffeine. Review both complete panels with a qualified clinician rather than assuming the word “pump” makes a combination suitable.
NIH notes that effects and safety of multi-ingredient combinations cannot be predicted from separate ingredient studies. There is no need to add another product merely because this one feels less dramatic over time. This is a warning interpretation, not a personalized dosing plan or a hands-on review.
Product pages and existing offers
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Sources and review notes
Reviewed October 12, 2026. ProSupps Nightmare V2 directions and warnings. Nightmare 30-serving facts panel. FDA caffeine guidance. NIH dietary supplements for exercise. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
