Transparent Labs gets the formula right. No artificial coloring, no sucralose, fully transparent dosing. But because they use stevia and natural flavoring, the taste can be hit or miss. I tested all 9 flavors of Bulk side by side, reset my palate between each one, and retested on different days. Here's every flavor ranked so you never waste $50 on a tub that tastes like punishment.
| Flavor | Score | Water | Milk |
|---|---|---|---|
| 1Tropical Punch | 9.5 | — | — |
| 2Sour Grape | 9.0 | — | — |
| 3Pineapple Coconut | 8.8 | — | — |
| Blue Raspberry | 7.5 | — | — |
| Black Cherry | 7.5 | — | — |
| Peach Mango | 7.0 | — | — |
| Watermelon | 6.0 | — | — |
| Strawberry Kiwi | 6.0 | — | — |
| Strawberry Lemonade | 5.0 | — | — |
Mixed each flavor with the recommended 10 to 12oz of water. Lined them all up side by side. Reset palate with water and apple slices between flavors. Retested on different days. Scored on mixability, sweetness, aftertaste, aroma, and daily drinkability.
These are the ones you'd actually buy again. Balanced, accurate, and easy to drink long term.
If you're buying just one tub, this is the safest bet. It hits the spot every single time without ever feeling like too much. The sweetness sits right in the middle where it should be. Most pre workout flavors either go full candy or full artificial. This one just tastes like a drink you'd actually choose.
The safest "everyday" flavor. If you hate sour or strong candy, start here.
If you want something fun that never feels boring, this is it. The sour hit at the front wakes you up before the caffeine even kicks in. Grape sweetness fills out the back half. It's candy without being childish about it. Strong personality but somehow still works five days a week.
Also called Pina Colada. If you like tropical flavors, this is one of the best pre workout flavors you'll ever try. The pineapple is real and present, not just a label claim. Coconut stays in the background where it belongs. No artificial edge at all which is rare for a naturally flavored pre workout.
These aren't bad. They just don't hold up as well day after day compared to the top three.
Sweet with a touch of tart, clean finish, no bitterness. Leans candy and that makes it delicious but also tiring over time. Note that it mixes pale yellow because there is no artificial dye. A safe option, but a bit generic compared to the top tier.
Hits hard. Very strong cherry flavor with a slight artificial edge. Not subtle at all. Great for cherry fans but the boldness makes it tiring for everyday use. Enjoyable if you like bold candy like flavors, but not something most people want five days a week.
Mango upfront, peach on the aftertaste. Balanced, slightly sour, and actually decent for long term use. You can drink this regularly without hating it, but it won't blow anyone away. The safest middle option if the top three are sold out.
These missed the mark. Artificial aftertaste, unbalanced sweetness, or just not worth it when better options exist at the same price.
Smells sweet, but tastes artificial. Has a weird peach like aftertaste that sticks around for too long and doesn't fit the name. Not the worst thing ever, but compared to the stronger flavors above it, there is no reason to pick this one.
Leans heavily on the kiwi while the strawberry is faint. Sweet but tastes artificial. Inconsistent from sip to sip which makes it hard to trust over a full tub. Sometimes enjoyable, but it doesn't hold up against the better flavors.
Mostly tastes like sour lemon with almost no strawberry. Overly sour and not balanced at all. The aftertaste is actually pleasant, but it's not enough to save the overall experience. The weakest flavor in the lineup and the one I'd buy last if ever.
If you hate sour, skip this completely. The lemon overwhelms everything. Tropical Punch exists at the same price.
The formula is the real reason to buy this. All natural flavors, no dyes, no sucralose, no acesulfame K. Every ingredient and dose is listed. Clinical dosing across the board: 8g citrulline, 4g beta alanine, 2.5g betaine, 200mg caffeine from PurCaf. Clean energy, smooth focus, no crash. The flavor is just the bonus.
Best overall: Tropical Punch. Best candy vibe: Sour Grape. Most unique: Pineapple Coconut. Safest middle option: Peach Mango. Skip: Strawberry Lemonade.
All nine mixed easily with no chalky clumps. If you want the natural balance, pick Tropical Punch. Want something strong and fun, go Sour Grape. Hate sour, skip Strawberry Lemonade completely.
