2.0 out of 5 stars Taste

2026-03-05    -David

Taste is horrible. Taste like medicine and hard to swallow

5.0 out of 5 stars Best pump for your buck!

2026-03-04    -Bad filter

I don't know why, but this stuff in particular gives me a great pump and some extra reps. About mid workout if I'm doing triceps I need to do a quick set of biceps because the pump is so hard it feels weird on only one side. This is about the best price you'll get for that feeling. Start at a half scoop to test tolerance. When I wasn't used to it I got some jitters and anxiety. 35 M 225lbs lifting on and off for about 10 years now. 🤙🏻

Náuseas

2026-02-03    -ZASA

Necesitaré algo más fuerte, no siento energía explosiva ..soy una persona normal que trabaja un turno de 8 hrs, con entrenamiento de una hora aprox y siento yo que está muy ligero, me han dado un poco de náuseas :x ..pero solo eso, a pesar de que tiene buen sabor, no se disuelve con la creatina como otros.. punto menos en fin… no lo volveré a comprar

5.0 out of 5 stars Go-To for Cardio/Basketball Days

2026-02-12    -HarshMarsh

Let me start by saying the standard Nitraflex (Testosterone Boosting) pre-workout is better for pumping iron in the gym. That being said, Nitraflex Ultra is now my go-to for cardio days, especially deep in the humid southern US Summer. The sodium-type ingredients gotta be helping me stay hydrated on days where you sweat as fast as you can drink. Stamina is noticeably increased from that given by standard Nitraflex, and I swear I can run for days on this stuff.As with any pre-workout, it is still recommended that you hydrate religiously. Theoretically you could probably get away with less water than with standard Nitraflex, but I refuse to "find out." This stuff's a must-have for those who like cardio/sports.

Muy buen producto.

2026-01-22    -Iris

No te mantiene alterado en el entrenamiento pero te da mucha fuerza. Sabor agradable. Muy recomendable.

Excelente

2026-02-28    -JAVIER RIOS

Muy buen producto

5.0 out of 5 stars Estupendo

2026-01-29    -Dariel Caballero Martinez

Está bueno se los recomiendo

Buena efectividad; el sabor no tanto

2025-12-24    -Stephanie De Koster

El sabor no me encantó; en lo personal se me hizo muy dulce; sin embargo en cuanto a energía y efectividad muy bueno, te da el boost que tu cuerpo necesita

No altera ni es agresivo

2026-02-01    -Roberto López Ramírez

Buen producto nada agresivo. Eficaz y sin alterar tu sistema. Te enfocas. En ejercicio sabor sube y ligero muy bueno recomendado 💯

1.0 out of 5 stars Terrible bitter taste

2026-02-16    -jeremy

I wanted to like this. The regular NitraFlex is one of my favorite pre’s and I use it often. I thought that I would try this one, and after two uses I’m throwing the tub away. The initial flavor is ok, but about 2 seconds into it, I’m hit with a terrible bitter taste. To the point of almost causing nausea. It’s awful. I realize this could just be a me thing but whatever it’s trash.