Short answer

We found no documented interaction between Carnitine and Soothing fiber formula 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.

Carnitine

What it is: A nutrient the body makes and gets from meat; it helps turn food into energy.

What the research says: Healthy people make all they need. Results for dementia and other conditions are mixed.

Cautions

• 3 g a day or more can cause nausea, cramps, diarrhea and a fishy body odor.
• High amounts may cause muscle weakness in kidney disease and raise seizure risk in people with seizure disorders.

Medicines to check

• Some anti-seizure medicines (phenobarbital, valproic acid) and long-term use of some antibiotics can lower carnitine levels

In Holitro: Carnitine (500 mg per capsule)

Source: NIH Office of Dietary Supplements: Carnitine: Fact Sheet for Consumers (updated May 2023)

Soothing fiber formula

What it is: A blend of plants rich in soothing fiber (mucilage): aloe, marshmallow root and slippery elm.

What the research says: A small study found a formula containing slippery elm eased constipation-type IBS symptoms. Small studies suggest aloe taken by mouth may lower blood sugar in diabetes.

Cautions

• Oral aloe gel seems safe short term; aloe latex can cause cramps and diarrhea, and aloe leaf extracts have been linked to rare cases of hepatitis.

Medicines to check

• Diabetes medicines: aloe may lower blood sugar

In Holitro: Soothing Fiber Formula (350 mg per capsule)

Sources: NIH National Center for Complementary and Integrative Health: Aloe Vera: Usefulness and Safety (updated February 2025); Memorial Sloan Kettering Cancer Center, About Herbs: Slippery Elm (updated June 2022)

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.