Supplement Science Guide: What You Need and Don't Need

Walk into any gym, you see supplement ads: protein powder, creatine, BCAA, pre-workout... various products claiming faster muscle gain, stronger training.

Truth: Most supplements you don't need. Only few truly effective.

I. Supplement Truth

Industry Problems

Marketing over science, profit-driven, lacking regulation, frequent new products.

Result: Ineffective products packaged as essential, exaggerated effects, inflated prices, consumer confusion.

Supplements Not Essential

Most important nutrition comes from food.

Priority: Food nutrition first, training and rest second, supplements third (optional).

II. Truly Effective Supplements

1. Protein Powder

Effect: ✅ Effective

When useful: Diet protein insufficient, post-training quick refill.

How to choose: Whey (post-training), Casein (before sleep), Plant (vegetarians).

2. Creatine

Effect: ✅ Effective

Most researched supplement, most confirmed effect.

Usage: 3-5g daily, no loading phase needed, long-term use.

Safety: Safe. Many studies confirm no negative effects for healthy people.

3. Caffeine

Effect: ✅ Effective

Usage: 3-6mg/kg body weight, 30-60 min before training.

Caution: Afternoon training may affect sleep, daily max 400mg.

III. Possibly Effective But Non-Essential

BCAA

Effect: ⚠️ Limited

Truth: If protein intake sufficient (most people sufficient), BCAA unnecessary.

HMB

Effect: ⚠️ Limited

May work for beginners, not obvious for experienced. High price.

Vitamins and Minerals

Effect: ⚠️ Depends

Useful when diet unbalanced, unnecessary when balanced.

IV. Ineffective or Unclear Supplements

❌ Not recommended: Pre-workout formulas, various muscle formulas, L-carnitine, various plant extracts.

Reason: No reliable research, exaggerated effects, inflated prices.

V. Usage Principles

Food Always First

Food: Complete nutrition, satiety, reasonable price, long-term health.

Supplements Fill Gaps

Only fill diet gaps. Don't use because others use.

Choose Reliable Brands

Criteria: Brand reputation, transparent ingredients, honest marketing, reasonable price.

Don't Depend

Supplements can't replace training and diet.

VI. Purchase Advice

Calculate Needs

First calculate protein from food. If target 150g, current 90g, gap 60g → protein powder 25g + lean meat 35g.

Budget Allocation

Priority: Food (main), protein powder if needed (medium), creatine if chosen (small), other (not recommended).

Don't Buy

Complex formulas, newest products, exaggerated ads, expensive brands.

VII. Summary

1. Supplements not essential - food first

2. Only few truly effective - protein, creatine, caffeine

3. BCAA unnecessary - if protein sufficient

4. Most supplements ineffective - don't be misled

5. Choose reliable brands - transparent, reputable

6. Don't depend - training and diet fundamental

Supplement industry full of marketing noise. Spend money on useful things.

Core Principle: Food priority, supplements auxiliary, scientific choice, not misled by marketing. Supplements add icing, not deliver cake.