Sports Supplements: Which Are Worth It and Which Waste Money?

The sports supplements market grows busier every year, from protein powder and creatine to fat burners, pre-workouts and colourful vitamin pills. Many beginners spend a large share of their monthly budget on supplements before they even have a sound training plan or diet. In this article we look, in plain language and based on evidence, at which supplements are genuinely worth buying, which only help in specific situations, and which are essentially money down the drain.

Foundations first: what a supplement cannot replace

The word "supplement" means something that fills gaps in a good diet, not something that replaces it. If you sleep less than six hours, your daily protein is too low, or you don't train consistently, no product will give you meaningful results. A sensible order of priorities looks like this:

1. Consistent, progressive training: at least three sessions a week, gradually adding weight or reps.
2. Enough calories and protein: for most lifters roughly 1.6–2 g of protein per kilogram of body weight.
3. Sleep: seven to nine hours a night.
4. Supplements: last, and only to fill gaps.

To find out how many calories and how much protein you need, use ProGym's BMI and calorie calculator. Once you know that number it becomes much easier to decide whether you need protein powder at all.

Supplements with strong evidence

Creatine monohydrate

Creatine is the most researched sports supplement, and a large body of evidence shows it modestly increases strength, power and muscle gain when combined with resistance training. A common and safe amount for healthy adults is 3–5 g per day; a high-dose "loading phase" is unnecessary, it just takes a few weeks longer to saturate the muscles. Plain monohydrate is enough, and pricier forms have no proven advantage. A gain of 1–2 kg in the first weeks is usually water stored inside the muscle, not fat. Anyone with kidney disease should speak with a physician before using it.

Protein powder (whey or plant)

Protein powder is a convenient food, not a magic potion. If you already hit your protein target with chicken, eggs, yoghurt, lentils, cheese and fish, you don't need it. For someone short on time or with a small appetite, a 25–30 g scoop is a simple help. Compare the price per gram of protein with regular foods; sometimes a few eggs and a bowl of strained yoghurt cost less than a scoop.

Caffeine

Caffeine improves endurance and focus and is the main active ingredient in most pre-workouts. A cup of coffee or two glasses of strong tea about 45–60 minutes before training is enough for most people. Late-day use can ruin sleep, and people with high blood pressure, palpitations or pregnancy should be cautious.

Supplements that help only in specific cases

• Vitamin D: deficiency is common in Iran, but the dose should be set from a blood test and by a physician.
• Iron: only for confirmed anaemia or iron deficiency; self-prescribed iron can be harmful.
• Omega-3: a reasonable option if you eat fish fewer than twice a week.
• Beta-alanine: useful for intense efforts of one to four minutes, such as a 400 m sprint, but not a priority for recreational bodybuilding. The tingling skin it causes is common and harmless.
• Electrolytes: for sessions longer than an hour in hot summer weather, replacing sodium and fluid becomes important.

Supplements that are mostly a waste of money

BCAAs

If your total daily protein is adequate, branched-chain amino acids add no extra muscle-building benefit. You already get these amino acids, in a more complete package, from chicken, eggs and dairy.

Fat burners

Most fat burners are high-dose caffeine mixed with plant extracts that have weak evidence. Their real effect on weight loss is tiny, and they can cause insomnia, anxiety and a racing heart. A calorie deficit, daily movement and adequate protein remain the only proven route to fat loss.

Herbal testosterone boosters

In healthy men with normal hormone levels these products have no meaningful effect on muscle or strength. If you suspect a hormonal problem, the right path is a doctor and a blood test, not a pill from a shop.

Glutamine for muscle gain

There is no good evidence that glutamine increases muscle size or strength in healthy people.

Quick comparison table

Safety and smart shopping in Iran

Counterfeit and smuggled products are a serious problem in the local market, and some low-quality supplements may contain banned or undeclared substances. A few practical tips:

• Buy only products licensed by the Food and Drug Administration with an authenticity label, from a pharmacy or reputable store.
• Avoid labels that list a "proprietary blend" without the amount of each ingredient.
• Ignore promises like "10 kg of muscle in a month"; that is physiologically impossible.
• Never exceed the dose on the label. More is not better.
• If you are pregnant, breastfeeding, taking medication or have a medical condition, check with a physician before using any supplement.

A practical budgeting example

Take Reza: 28 years old, 75 kg, training three days a week. His protein target is about 120–150 g a day. With three meals of eggs, chicken or meat, yoghurt and legumes he reaches around 110 g. All he needs is one extra protein snack, such as milk and cheese, or a single scoop of powder. If he wants a bit more strength, 5 g of creatine daily is the most sensible next purchase. Instead of five different tubs, these two simple items plus a well-designed programme give the best return. Browse the exercise library to pick the right movements, and if you want a personalised plan, work with one of our online coaches.

Common supplement mistakes

• Stacking pre-workouts with extra coffee: caffeine from several sources quickly adds up past a safe daily amount, causing headaches, shaky hands and poor sleep.
• Cycling creatine on and off: creatine doesn't need on/off cycles; steady daily use works better.
• Replacing meals with protein shakes: a shake lacks the fibre, vitamins and minerals of a full meal and works best as a snack.
• Not drinking enough water: more protein and creatine raise your fluid needs; aim for at least eight to ten glasses a day and watch the colour of your urine.
• Copying professional athletes: the stack of a pro training hard six days a week is not appropriate for a beginner.

Remember one simple rule: if you've taken a supplement consistently for three months and noticed no change in performance or body composition, you probably don't need it.

Summary

Most recreational athletes need only a few supplements: creatine monohydrate, protein powder if necessary, and caffeine from coffee or tea. Take vitamin D and iron only after testing and on a physician's advice. BCAAs, fat burners and hormone boosters are usually not worth the money. Before buying anything, ask yourself: are my training, sleep and diet in order? If not, spend your money on good food and a proper training plan first.

Frequently asked questions