Chemotherapy side effects are manageable, and most people going through treatment use a combination of medications, lifestyle changes, and simple physical strategies to feel significantly better. What helps most depends on which side effects hit you hardest. Here’s a practical breakdown of the most common problems and what actually works for each one.
Controlling Nausea
Anti-nausea medications have improved dramatically, and modern drug combinations prevent vomiting entirely for most people on even the harshest regimens. For high-risk chemotherapy drugs, the current standard is a four-drug combination: two types of anti-nausea medications that block different pathways in the brain, a steroid to reduce inflammation, and a low-dose medication called olanzapine. The first three are typically given on treatment day, while the steroid and olanzapine continue for a few days afterward to cover the delayed nausea window that peaks around days two through four.
If your oncologist hasn’t mentioned olanzapine, it’s worth asking about. It’s one of the strongest additions to anti-nausea regimens in recent years and is now part of major treatment guidelines for anyone receiving highly emetogenic chemo. The main side effect is drowsiness, which some patients actually welcome during treatment weeks.
Ginger is one of the few supplements with solid clinical evidence behind it. A trial of 576 cancer patients found that 500 mg to 1,000 mg of ginger daily, started three days before chemotherapy, significantly reduced the severity of acute nausea. That’s roughly the equivalent of two to four capsules of a standard ginger root supplement per day, split into morning and evening doses. Higher doses didn’t work better, and may cause heartburn.
Fighting Fatigue
The single most effective tool for chemotherapy-related fatigue is exercise, even though it feels counterintuitive when you’re exhausted. Walking at a moderate pace for as little as 10 to 30 minutes a day, three to six days per week, consistently reduces fatigue across multiple cancer types and treatment regimens. “Moderate” means you’re slightly out of breath but can still hold a conversation.
You don’t need a gym. Home-based walking programs work just as well as supervised ones in clinical studies. Breast cancer patients who walked at moderate intensity during chemotherapy and radiation reported less fatigue, better sleep, lower anxiety, and improved heart and lung function. Prostate cancer patients saw similar benefits with just 30 minutes of walking three days a week for 10 weeks. Even patients receiving high-dose chemotherapy who pedaled a bedside bike in one-minute intervals, alternating with one minute of rest for 30 minutes total, reported less fatigue than those who rested.
Adding light resistance training (bodyweight exercises, resistance bands, or light weights) two to three days per week amplifies the benefit. A combined aerobic and resistance program lasting just four weeks improved fatigue, sleep quality, strength, and immune function in both breast and prostate cancer patients.
Preventing Mouth Sores
Mucositis, the painful inflammation and ulceration inside the mouth, is one of the most dreaded side effects of certain chemo regimens. One of the simplest and cheapest prevention methods is oral cryotherapy: sucking on ice chips before and during your infusion. The cold constricts blood vessels in the mouth, reducing the amount of chemotherapy drug that reaches the delicate tissue lining.
Protocols in clinical studies vary widely, from 15 minutes to the entire infusion session, but 30 to 60 minutes of continuous ice chip use starting just before the infusion begins is a common approach. Ask your infusion nurse about this before your next session. It’s free, low-risk, and supported by multiple systematic reviews.
Protecting Your Hands and Feet From Nerve Damage
Peripheral neuropathy, the tingling, numbness, and pain in fingers and toes, is especially common with taxane-based chemotherapy. A recent study published in JAMA Oncology found that both cooling (frozen gloves) and compression (tight-fitting surgical gloves) during infusions are highly effective at preventing sensory nerve damage. After patients received half their planned taxane doses, 58% to 63% of treated hands showed no neuropathy compared to the untreated hand on the same person.
Cooling gloves and compression gloves work through different mechanisms. Cold restricts blood flow to the fingers, limiting drug exposure. Compression does something similar by reducing the volume of tissue the drug can penetrate. Both are worth discussing with your oncology team, particularly if you rely on fine motor skills for work or daily life.
Reducing Hair Loss
Scalp cooling systems, which circulate cold fluid through a fitted cap during infusion, can significantly reduce hair loss. A multi-center study of breast cancer patients found an 81% success rate, meaning four out of five women kept enough hair to avoid wigs or head coverings. However, the type of chemotherapy matters. Patients who received anthracycline-based regimens were about 2.7 times more likely to experience significant hair loss despite scalp cooling compared to those on other regimens.
Scalp cooling requires wearing the cap for 30 minutes or more before, during, and after each infusion, which adds time to an already long treatment day. Some people find the cold uncomfortable, especially in the first few minutes. Many cancer centers now offer scalp cooling, though insurance coverage varies and out-of-pocket rental costs can run several hundred dollars per month.
Staying Hydrated
Hydration is critical during chemotherapy, particularly with platinum-based drugs like cisplatin, which can damage the kidneys. During infusion days, your treatment team will administer intravenous fluids, typically 2 to 4 liters over several hours, along with electrolytes like magnesium and potassium to protect kidney function. Magnesium supplementation in particular has been shown to reduce kidney toxicity in seven out of nine studies reviewed in a recent systematic analysis.
At home between treatments, aim to drink enough fluid that your urine stays pale yellow. Many oncology teams recommend 8 to 10 glasses of water or other clear fluids per day, though your specific needs depend on your regimen, body size, and whether you’re experiencing vomiting or diarrhea. Electrolyte drinks can help if you’re losing fluids through digestive side effects.
Managing Diarrhea
Chemotherapy-induced diarrhea is common with several drug classes, particularly those used for colorectal cancer. Over-the-counter loperamide (the active ingredient in Imodium) is the first-line treatment. The standard approach is 4 mg at the first loose stool, then 2 mg after each subsequent episode, up to 16 mg per day. For diarrhea caused by certain specific drugs, oncologists may recommend a higher-dose schedule of 2 mg every two hours, up to 24 mg daily.
If diarrhea persists beyond 24 to 48 hours despite loperamide, or if you develop a fever, bloody stools, or signs of dehydration (dizziness, dark urine, dry mouth), contact your oncology team promptly. Uncontrolled diarrhea during chemotherapy can become dangerous quickly because your immune system is already suppressed.
Lowering Infection Risk
Chemotherapy suppresses your white blood cell count, specifically the neutrophils that fight bacterial infections. Your vulnerability depends on how low your count drops. A normal neutrophil count is above 1,500 cells per microliter. Mild risk begins between 1,000 and 1,500, moderate risk between 500 and 1,000, and severe risk below 500. Below 100, even bacteria that normally live harmlessly on your skin can cause life-threatening infections.
Practical precautions that make a real difference: wash your hands frequently and thoroughly, avoid crowds and sick contacts during your lowest-count days (typically 7 to 14 days after infusion), wear a mask in public indoor spaces, and skip raw or undercooked foods. Your care team will monitor your blood counts and let you know when to be most cautious. Some regimens include injections that stimulate white blood cell production, which your oncologist will prescribe if your counts warrant it.
Coping With Chemo Brain
The foggy thinking, forgetfulness, and difficulty concentrating that many people experience during and after chemotherapy is real and well-documented. It affects memory, attention, and the ability to multitask. The good news is that for most people it improves after treatment ends, though it can linger for months or sometimes longer.
Cognitive rehabilitation with a neuropsychologist can help if symptoms are significantly affecting your daily life. Practical strategies include using written notes and outlines rather than relying on memory, tracking when your thinking is sharpest versus foggiest (many people notice patterns tied to fatigue, hunger, or time of day), and practicing mindfulness to improve focus. Brain-training activities like crossword puzzles, number games, learning a musical instrument, or studying a new language help your brain rebuild and strengthen the neural pathways affected by treatment. Physical exercise also improves cognitive function, giving you yet another reason to keep moving during treatment.