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💊 What Supplements Should I Take to Maintain My Weight (and Tighten Up Without Losing Muscle)?

  • Writer: Dr Susan Baxter
    Dr Susan Baxter
  • May 9, 2022
  • 3 min read

Updated: Jul 7


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Let’s start with this:


Supplements are not magic. They’re nutritional insurance.
They fill the gap between what you’re eating… and what your body actually needs.

If your food, sleep, movement, and stress hygiene aren’t on point?

Supplements won’t save you.

But if those foundations are dialed in (or at least trending upward), the right stack can support you—especially if:


  • You’re in a calorie deficit

  • You’re training hard and don’t want to lose muscle

  • You’ve got dietary limitations (e.g. vegan, dairy-free, low appetite)

  • Your environment lacks key minerals (e.g. NZ soil is low in selenium)



Here’s what’s worth considering if your goal is to maintain your weight, stay lean, and feel recovered—not ragged.




1.

Multivitamin



📌 Insurance policy for gaps in your diet

Most calorie-controlled diets are lower in micros. You’re eating less food = you’re getting fewer nutrients.

A high-quality multivitamin (ideally third-party tested) can help prevent performance dips and fatigue from hidden deficiencies.




2.

Whey Protein



📌 Lean mass maintenance without chewing another chicken breast

You need protein to preserve muscle, especially in a deficit.

Whey = fast-digesting, bioavailable, convenient.


How to use it:


  • Post-training with fruit or oats

  • In smoothies with spinach & berries

  • In oats for a high-protein breakfast

  • Baked into high-protein snacks if you’re getting bored



Pro tip: Look for low-carb, low-fat versions if your calories are tight.




3.

Casein Protein



📌 Slow drip muscle support overnight

Muscle breakdown and recovery are a 24-hour process. Casein digests slowly, feeding your body aminos while you sleep.

Ideal if:


  • You train at night

  • You wake up sore

  • You’re trying to reduce muscle loss during a diet



Mix with Greek yogurt or make a protein pudding for dessert—yes, really.




4.

HMB (Beta-hydroxy-beta-methylbutyrate)



📌 Anti-catabolic support without extra calories

HMB is a metabolite of leucine (a key amino acid in muscle maintenance).

It helps:


  • Reduce muscle breakdown

  • Preserve lean mass during cutting

  • Support recovery, especially for beginners or those returning from a break



Great if your protein is already decent but you want added insurance without more food.




5.

Beta-Alanine



📌 Performance enhancer = train longer, harder, better

Beta-alanine increases carnosine in muscles, which helps buffer acid and delay fatigue.


Translation:

You can push through more reps, longer intervals, or higher effort before the burn stops you.


Best used:


  • For HIIT, CrossFit, or high-intensity resistance work

  • In a loading dose (2–5g/day for 4 weeks), then maintained

    (Note: it can cause harmless tingling—completely normal.)





6.

ZMA (Zinc + Magnesium Aspartate + B6)



📌 Recovery, sleep, and hormone support

Sleep = recovery.

And micronutrient deficiencies (especially magnesium) = restless sleep and lower testosterone.


ZMA helps with:


  • Deep, restorative sleep

  • Muscle repair overnight

  • Hormonal balance (especially for active men and women)



Take it before bed, away from calcium-containing foods.




Bonus: 🧠

What about Omegas, B12, or Creatine?



  • Omegas – If you’re vegan or don’t eat fatty fish, consider an algae-based DHA/EPA source. Inflammation, skin, cognition—all benefit.

  • B12 – If you’re vegan/vegetarian or low energy, test your levels. Oral B12 (methylcobalamin) can help restore mood, focus, and metabolism.

  • Creatine – Not essential for weight maintenance, but worth considering for strength, cognitive support, and muscle fullness. Yes, even if you’re not bulking.





🚨 Final Notes



❌ Don’t supplement out of fear.

✅ Supplement with strategy.


The best supplements:


  • Fill a gap (from food, training stress, or lifestyle limits)

  • Support a specific outcome (not just “health”)

  • Let you train, recover, and maintain lean mass with less friction




TL;DR Supplement Stack for Weight Maintenance + Tightening:

Goal

Supplement

Why

Nutrient support

Multivitamin

Fill gaps in low-calorie diets

Muscle retention

Whey, Casein, HMB

Protein support + anti-catabolic

Workout performance

Beta-Alanine

Delay fatigue, go longer

Recovery & Sleep

ZMA

Deeper sleep = better recovery

Bonus

Omegas, Creatine, B12

Based on diet & personal need





Do you have other recommendations to maintain weight? Message us and let us know!

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