Can I take Creatine with D Complex?

Understanding the interactions, benefits, and safety of combining these two powerful supplements.

Creatine
+
D Complex

Short answer

We found no documented interaction between Creatine and Vitamin D3 with A, E and K2 in the sources below. That isn't proof the combination is right for you: check each one's cautions, and ask your pharmacist if you take medication.

Creatine

What it is: A compound stored in muscle that supplies energy for short, intense effort. The body makes about 1 g a day.

What the research says: Creatine can increase strength and power for repeated short bursts like sprinting and lifting, but helps little with endurance exercise. Studies typically used 3 to 5 g a day after a loading phase; creatine monohydrate is the most studied form.

Cautions

  • Considered safe for healthy adults for weeks to months, and it seems safe for years.
  • It usually causes some weight gain from water retention; rarely cramps or stomach upset.

In Holitro: Creatine (750 mg per capsule)

Source: NIH Office of Dietary Supplements: Dietary Supplements for Exercise and Athletic Performance (updated March 2021)

Vitamin D3 with A, E and K2

What it is: A combination of vitamin D3 with vitamins A, E and K2. Vitamin D helps the body absorb calcium and supports muscles, nerves and the immune system.

What the research says: Getting enough vitamin D and calcium helps protect against osteoporosis.

Cautions

  • Adults shouldn't exceed 4,000 IU (100 mcg) of vitamin D a day from all sources unless a clinician advises more. Too much can cause nausea, weakness, confusion and kidney stones.
  • Too much preformed vitamin A can cause headaches and blurred vision, and birth defects in pregnancy.
  • High-dose vitamin E supplements may raise bleeding risk.

Medicines to check

  • Warfarin: vitamin K and vitamin E both matter, and vitamin K intake should stay steady
  • Statins, steroids, orlistat and thiazide diuretics (vitamin D notes)
  • Vitamin A-based medicines such as acitretin

In Holitro: D Complex (5,000 IU per capsule)

Sources: NIH Office of Dietary Supplements: Vitamin D: Fact Sheet for Consumers (updated November 2022); NIH Office of Dietary Supplements: Vitamin A: Fact Sheet for Consumers (updated March 2025); NIH Office of Dietary Supplements: Vitamin E: Fact Sheet for Consumers (updated March 2021); NIH Office of Dietary Supplements: Vitamin K: Fact Sheet for Consumers (updated March 2021)

Check with your doctor or pharmacist, especially if you take medication.

Check your stack — free

Educational information only, not medical advice. This reflects general ingredient overlap, not a personalized safety review. Always check with your doctor or pharmacist before combining supplements, especially if you take medication, are pregnant or nursing, or manage a health condition. These statements have not been evaluated by the FDA.

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Balancing dosages across multiple different bottles is risky, inefficient, and expensive. D Complex is already lab-dosed and delivered daily in our Immune Pack — one less bottle to manage.

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