

Building Blox ON Shots (or “ON Energy Shot”) are ready‑to‑drink small energy / pre‑workout shots (liquid format, ~ 60 ml per shot).
They are marketed as a concentrated amino‑acid + energy drink, designed to give a quick energy boost and support workouts or active days.
Building Blox lists multiple flavor and shot‑pack options — for example: Kiwi, Cherry Cola, Mixed Berries, Mango Peach — typically sold in packs of 15 shots.
According to product info for ON Shots:
Caffeine: ~ 200 mg.
Amino acids / Nitrogenous compounds: e.g. 600 mg Taurine + 150 mg L‑Phenylalanine (as listed on one variant) along with “amino‑acid blend”.
Vitamins (e.g. B‑vitamins: Vit B3, B6, B12) — intended to support energy metabolism.
Malic Acid (natural source) — sometimes included.
Zero added sugar (or “zero sugar formula”) and typically no extra calories listed.
So the intention is that ON Shots give a quick energy boost + some amino acid support + vitamins, in a compact, ready-to-drink format.
Building Blox’s description and seller listings of ON Energy Shots say they are meant to:
Provide rapid energy surge — good before workout or when you need quick energy/focus.
Support focus and alertness — thanks to caffeine + vitamins + active ingredients in the shot.
Offer a “clean” energy source — zero added sugar, minimal calories (makes it more diet‑friendly than sugary energy drinks).
Provide some amino acid support (via taurine, phenylalanine, etc.) — which the brand suggests may help individuals with an active lifestyle or athletes.
Because of the small “shot” format and ready-to-drink nature, many users consider it a pre‑workout substitute or a convenient “energy + amino” option when they don’t want to mix powders or drink heavy shakes.
The caffeine dose (≈ 200 mg per shot) — that's fairly strong; could cause jitters, insomnia, increased heart rate if you’re sensitive or take it late in the day.
While the shot includes some amino acids (taurine, phenylalanine, etc.), this is not equivalent to a full protein or complete amino‑acid supplement — it shouldn’t replace a balanced diet or full nutrition plan.
As with any energy/caffeinated supplement: hydration and overall diet matter. Relying only on such shots (without proper nutrition or rest) won’t give optimal results.
It’s marketed as a “quick boost,” so effects might be short-term (energy & focus), rather than long-term muscle building or recovery support.
Sensible use is important: per the product listing for a shot mixture labeled “Pre‑workout Shot,” they advise maximum 1 bottle/day before workout.
ON Shots might suit you if you:
Want a quick energy/focus boost before gym or during heavy workouts (but don’t want to mix powders).
Need occasional energy + amino support without heavy calories or extra sugar (e.g. dieting, calorie‑conscious).
Prefer convenience — ready to drink, portable, fast‑acting.
Already have a relatively balanced diet and want a small supplement, not a replacement of nutrition.