JYM Supplement Science
JYM Pre JYM
VS
Quick Verdict
Best overall
Transparent Labs Bulk
Higher stim
Pre JYM
All-in-one
Pre JYM
Daily driver
Bulk
Value
Use live cost per full serving
Best For
300 mg caffeine
Creatine included
BCAAs included
Huperzine A
Lower caffeine
More beta-alanine
More betaine
Caffeine + theanine
Servings
Caffeine
Citrulline malate
Beta-alanine
Betaine
Creatine
BCAAs
Beet-root extract
Alpha-GPC
Huperzine A
L-theanine
Pre JYM uses 300 milligrams of caffeine with alpha-GPC and huperzine A. It is the better fit when you deliberately want more stimulation.
Bulk uses 200 milligrams of caffeine with 200 milligrams of theanine, 1 gram of tyrosine and 300 milligrams of alpha-GPC. It is easier to repeat across a normal training week.
Bulk wins the disclosed core-performance comparison. It provides more citrulline malate, twice the beta-alanine and one extra gram of betaine.
Pre JYM adds beet-root extract, but more of its scoop is allocated to creatine, BCAAs and the all-in-one formula.
Pre JYM includes 2 grams of creatine HCl and 6 grams of BCAAs.
That is convenient when one scoop is meant to cover several supplement categories. It may be redundant if you already take creatine and consistently reach daily protein targets.
Pre JYM contains 50 micrograms of huperzine A. Bulk does not.
Some users deliberately want huperzine A. Others prefer not to take it every training day. Present that as a preference rather than a universal advantage.
Both current tubs list 30 servings.
Bulk is the better default because its stimulant level is easier to repeat and its core pre-workout dosing is stronger.
Pre JYM is the better choice when you want 300 milligrams of caffeine and specifically value built-in creatine, BCAAs and huperzine A.
JYM Supplement Science
JYM Pre JYM
Higher Stim
No current retailer offers tracked.
Transparent Labs
Bulk Pre Workout
Our Pick
Discount:
FITFREKCopied!
BULK
Pros
Less caffeine than original Pre JYM.
Creatine can stay separate from your pre-workout.
Cons
No included creatine.
Citrulline-malate and AlphaSize amounts need their forms and percentages kept visible.
Original Pre JYM
Pros
Includes creatine HCl and BCAAs.
Thirty labeled servings in the reference tub.
Cons
More caffeine per serving.
Included ingredients may overlap with supplements you already use.
Frequently Asked Questions
Which has more caffeine?
▼
Pre JYM has 300 milligrams. Bulk has 200 milligrams.
Which is better for pumps?
▼
Bulk has more citrulline malate, beta-alanine and betaine.
Does Pre JYM replace daily creatine?
▼
It provides 2 grams of creatine HCl. Whether that replaces a separate routine depends on the dose and form used consistently.
Which is better for evening workouts?
▼
Neither is ideal late at night. Bulk contains less caffeine, but 200 milligrams can still interfere with sleep.
Is Pre JYM Plus included?
▼
No. Pre JYM Plus is a separate formula.
Is Stim-Free Pre JYM included?
▼
No. This page compares standard current Pre JYM with standard current Bulk.
Sources & Evidence
Official labels and supporting references
SRC
Pre JYM official product page
30 servings and current disclosed formula
View source →
Verified
SRC
Transparent Labs Bulk official product page
Current disclosed formula and directions
View source →
Verified
SRC
Pre JYM Plus official page
Used only to confirm it is a separate formula
View source →
Verified
SRC
ISSN beta-alanine position stand
Performance and chronic-intake context
View source →
Verified
SRC
Citrulline-malate systematic reviews
Evidence context for pump/performance claims
View source →
Verified
