Practical buying guide
Losing fat while trying to keep muscle is primarily a diet, training and recovery task. If you also want an optional caffeine-containing capsule formula, PrimeShred is our preferred product, with its role kept separate from muscle retention.
Published by PrimeShred. We have a commercial interest in the products we recommend. This is an assessment of product information and research, not a personal-use test.
Our recommendation
PrimeShred is our supplement pick around a planned cut.
We favour its disclosed daily quantities and convenient capsule format. The evidence for preserving muscle concerns the wider programme; we do not claim that PrimeShred supplies that result.
See PrimeShred ingredients and optionsKeep the cut manageable
A more aggressive deficit is not automatically a better strategy if it undermines training quality, recovery or adherence. Set up a routine that you can evaluate consistently rather than changing food, training and supplements all at once.
Track progress in a way that distinguishes ordinary short-term fluctuations from a sustained trend. Strength, training quality and how you recover also deserve attention alongside body weight.
Give protein and resistance training their proper role
A controlled trial compared protein intakes during energy restriction and intense exercise. Its findings support attention to those programme choices. [1]
That does not provide a universal individual prescription or validate a fat-burner capsule. Protein-containing foods and an appropriate training stimulus should not be replaced by tiny amino-acid quantities in a multi-ingredient supplement.
Amounts refer to the stated serving for each product, not one capsule. Extract weights, raw-herb equivalents and elemental mineral amounts are different measurements.
Swipe the table to see every product column.
| Ingredient | PrimeShred 3 veggie capsules; 30 servings per bottle |
|---|---|
| Vitamin B3 | 15 mg; niacin |
| Vitamin B6 | 1.3 mg; pyridoxine hydrochloride |
| Vitamin B12 | 24 mcg; methylcobalamin |
| Green tea | 500 mg; leaf, 50% polyphenols |
| L-tyrosine | 300 mg |
| Rhodiola | 250 mg; root, 3% salidrosides |
| L-theanine | 250 mg |
| Caffeine | 225 mg; anhydrous |
| Cayenne pepper | 200 mg; fruit extract, 10:1 |
| DMAE | 150 mg; bitartrate |
| Green coffee | 100 mg; bean extract, 4:1 |
| Black pepper extract | 5 mg; BioPerine fruit extract, 95% piperine |
“Not included” indicates confirmed absence from the assessed formula. “Not verified” identifies a gap in the information available for this comparison; it does not mean the manufacturer hides the amount.
PrimeShred: All 12 label entries are shown individually. The caffeine figure is the declared anhydrous amount; total intake also depends on other caffeine sources.
Capsule and other ingredients
PrimeShred: Hypromellose capsule, silica and magnesium stearate.
Where PrimeShred can fit
PrimeShred is our preferred optional capsule formula for a suitable adult who wants a clearly stated caffeine-containing supplement around the cut. The supplied panel lets you review its active amounts before buying.
We favour the practical routine and ingredient selection. We do not call it anabolic, claim it prevents muscle loss or suggest that it compensates for insufficient food or poor training.
Protect recovery from the supplement routine
Count caffeine from all relevant drinks and products. If you already use caffeinated pre-workout, consider whether an additional stimulant supplement has a useful role at all. Caffeine timing can affect sleep. [2]
If you find yourself adding products to counteract other products, simplify. A supplement purchase should be easy to assess within the programme, not make it harder to understand why recovery or performance changed.
Our final choice
Build the cut around food, resistance training and recovery. If an optional disclosed caffeine-containing formula fits that plan, PrimeShred is our choice, with no claim that it independently preserves muscle.