The supplements that are actually worth it
Informational content: this is not a substitute for medical advice. Check with a doctor before starting a training program, especially if you have a health issue or any pain.
The supplement aisle is a marketing minefield. Dozens of products promise spectacular results, with slick labels and vague claims. The truth is that very few have a demonstrated effect, and none will make up for mediocre training or a sloppy diet. Here is the honest sort, with no commercial interest.
The basic principle: supplements supplement
The word is in the name. A supplement completes an existing diet and training program, it does not replace them. If you do not sleep, do not eat enough protein, and switch programs every month, no powder will fix that.
The order of priorities never changes: structured training, appropriate nutrition, enough sleep, consistency over time. Supplements come after, and account for a small fraction of your results.
What actually works
Creatine monohydrate
The best documented and highest value supplement. It increases your immediate energy reserves, letting you squeeze one or two extra reps out of heavy sets. Accumulated over months, that extra volume translates into more muscle.
Dose: 3 to 5 g per day, every day, in monohydrate form. Cheap, effective, with no demonstrated adverse effect in healthy people.
Whey or any protein powder
It works no magic: it is simply a convenient protein source. Its value is logistical, not physiological. If you already hit 1.6 to 2.2 g of protein per kilo through food, it adds nothing.
That said, if you struggle to reach your total, a shake is far easier than a fifth meal.
Vitamin D
Useful if you are deficient, which is common in winter at European latitudes. It plays a role in bone health and muscle function. Ideally, have your level tested before supplementing rather than doing it blindly.
Caffeine
Its effect on performance is real and well documented: it improves alertness and reduces perceived effort. A coffee before your session is enough. Just avoid taking it too late, or you will damage your sleep, which costs more than the benefit.
The sorting table
| Supplement | Verdict |
|---|---|
| Creatine monohydrate | Effective, excellent value for money |
| Protein powder | Convenient, useful only if your total is hard to reach |
| Caffeine | Real performance effect, mind your sleep |
| Vitamin D | Useful if deficient, best confirmed by a test |
| BCAAs | Useless if your protein intake is sufficient |
| Fat burners | Marginal effect, never replaces a calorie deficit |
| Pre-workouts | Mostly caffeine, very expensive for what it is |
| Glutamine | No demonstrated benefit in healthy lifters |
The false friends
BCAAs were the star supplement for years. The problem is that they contain only three amino acids, while your body needs all nine essential ones to build muscle. If you eat enough complete protein, BCAAs add nothing.
Fat burners rely essentially on caffeine and a few plant extracts. Their effect on energy expenditure is marginal. None will replace a calorie deficit maintained over time.
Pre-workouts often contain caffeine at a hefty markup, alongside ingredients dosed too low to matter. A coffee costs fifteen times less.
How to read a label
- Check the actual doses, not just the ingredient list. An underdosed ingredient does nothing.
- Beware proprietary blends, which hide the quantity of each component.
- Ignore vague claims. "Optimizes", "supports", "promotes" mean nothing.
- Compare price per gram of active ingredient, not the price of the tub.
A useful precaution
If you take medication, have a known condition, or are pregnant, ask a health professional before supplementing. That holds even for the most ordinary products.
Frequently asked questions
Which supplements are genuinely useful for lifting?
Creatine monohydrate is the best documented. Protein powder is convenient if you struggle to hit your daily total. Caffeine improves performance, and vitamin D helps if you are deficient.
Are BCAAs worth taking?
Not if your complete protein intake is sufficient. They contain only three amino acids, while building muscle requires all nine essential ones, already present in whey and everyday food.
Do you need whey to progress?
No, it is never mandatory. It is a convenient protein source, nothing more. If your diet already covers your needs, it brings no additional benefit.
Do fat burners work?
Their effect is marginal and mostly comes from caffeine. No burner replaces a sustained calorie deficit, which remains the only real mechanism of fat loss.
The real test of a supplement is not what the label promises, it is what your performance shows. An effective product means reps gained or loads climbing, not a sensation. By logging your sets in Musku, you can objectively compare your numbers before and after several weeks of use, and decide for yourself whether it earns its place in your budget.