Protocol · Oncology Support
Radiation Therapy Side Effects Supportive Care Protocol
Glutamine and Probiotics are the core of this stack, with 7 supporting supplements. Each row gives the amount the protocol lists and the grade our evidence database holds for that supplement in Radiation Therapy Side Effects Supportive Care.
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
The stack
9 supplements · 3 graded
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file |
|---|---|---|---|---|
| Primary stackThe core of this protocol | ||||
| Glutamine | Amount listed: 10–30 g daily in divided doses (starting before radiation) | May reduce radiation-induced mucositis (mouth sores) by supporting mucosal cell regeneration | Not graded yet | |
| Probiotics | Amount listed: 10–50 billion CFU daily multi-strain (starting before pelvic/abdominal radiation) | May reduce radiation-induced diarrhea by maintaining gut microbiome balance
| Not graded yet | |
| Supporting stackListed as additions to the core | ||||
| Hyaluronic Acid (Topical or Oral) | Amount listed: Topical gel applied to affected skin; oral 100–200 mg daily | Promotes tissue healing; topical forms may help radiation skin reactions
| Grade B for Dermatitis Severity1 study · 104 people | |
| Calendula (Topical) | Amount listed: Calendula cream or ointment applied 2–3 times daily to irradiated skin | Anti-inflammatory herb that may reduce radiation skin reactions when applied topically
| Grade C for Dermatitis Risk3 studies · 756 people | |
| Zinc | Amount listed: 30–50 mg daily | Supports wound healing and immune function; may help with mucositis and skin healing | Not graded yet | |
| Omega-3 Fatty Acids | Amount listed: 2–3 g EPA+DHA daily | Anti-inflammatory effects may help reduce radiation-induced tissue damage | Not graded yet | |
| Vitamin E (Topical and Oral) | Amount listed: Topical vitamin E oil to irradiated skin; oral 400 IU daily | Antioxidant that may help protect skin from radiation damage | Not graded yet | |
| Honey (Medical-Grade, Topical) | Amount listed: 20 ml swish and swallow for mucositis; topical for skin reactions | May help with radiation-induced mucositis when used as oral rinse or for skin healing | Not graded yet | |
| Aloe Vera (Topical) | Amount listed: Pure aloe vera gel applied to irradiated skin as needed | Soothing and moisturizing; may provide comfort for radiation skin reactions
| Grade D for Dermatitis Risk763 people | |
How this protocol works
In plain language
Radiation therapy is an important cancer treatment, but it can cause side effects because radiation affects both cancer cells and nearby healthy tissue. Common side effects include skin reactions (redness, peeling, blistering - like a severe sunburn), mucositis (painful sores in the mouth or throat if treating head/neck cancers), radiation-induced diarrhea (if treating pelvic/abdominal area), and fatigue. While these side effects are usually temporary, they can significantly impact quality of life during treatment.
CRITICAL: Never skip radiation therapy appointments due to side effects without consulting your oncology team - they have effective medical treatments for severe reactions. Some antioxidant supplements may potentially interfere with radiation's cancer-killing effects - always discuss supplements with your radiation oncologist before starting them. These supplements support tissue healing and symptom management, not cancer treatment.
Glutamine* has the strongest evidence for radiation-induced mucositis (mouth and throat sores). It provides fuel for the rapidly dividing mucosal cells and may help them regenerate faster. Starting before radiation may help prevent severe mucositis.
Probiotics* can help prevent radiation-induced diarrhea, especially when radiation is directed at the pelvis or abdomen. They help maintain healthy gut bacteria that get disrupted by radiation.
Hyaluronic Acid* supports tissue hydration and healing. Topical forms may help with radiation skin reactions.
Calendula* (marigold) cream has shown benefit for radiation dermatitis (skin reactions) in clinical trials, potentially outperforming standard care.
Zinc* supports wound healing and may help with both mucositis and skin healing.
Omega-3 Fatty Acids* have anti-inflammatory effects that may help reduce radiation-induced tissue inflammation.
Vitamin E* is an antioxidant that may help protect skin. Use is somewhat controversial - discuss with your oncologist.
Honey* (medical-grade) has antimicrobial and healing properties. It has been studied as a mouth rinse for radiation mucositis with positive results.
Aloe Vera* gel may soothe radiation skin reactions, though evidence is mixed.
Expected timeline: Most radiation side effects develop during treatment and peak 1-2 weeks after completion, then gradually improve. Mucositis typically heals within 2-3 weeks post-treatment. Skin reactions may take 2-4 weeks to resolve. These supplements should be started preventively when possible and continued through the healing period.