People taking weight-loss medications such as Wegovy (semaglutide) or Mounjaro (tirzepatide) are being urged to focus on protein-rich, nutrient-dense and fibre-rich foods while limiting spicy, sugary and fried items to help manage side effects like nausea, reflux, bloating and vomiting.
Ramona Saleh, Professional Standards Pharmacist at Pharmacy2U, said that while no foods are strictly forbidden, thoughtful dietary choices can help people meet their nutritional needs during treatment.
Foods to include in your diet
Saleh recommends three types of foods for those using weight-loss treatments. Protein-rich foods such as eggs can help maintain muscle mass as calorie intake drops, with one large egg providing about 6 grams of protein for roughly 72 calories. Other options include cottage cheese, Greek yoghurt, beans, fish, tofu, and lean meats like chicken and turkey.
Nutrient-dense fruit and vegetables, including affordable options like carrots, tomatoes, peppers, leafy greens and apples, can supply essential vitamins and minerals with relatively few calories. Fibre-rich foods such as lentils, black beans and chickpeas can support healthy digestion and also provide plant-based protein, which may help address constipation commonly linked to slowed digestion.
Foods to limit
Saleh also advises reducing consumption of three foods that can worsen side effects. Spicy foods, such as dishes containing hot chilli peppers, may aggravate heartburn and acid reflux; milder alternatives like red bell peppers could improve comfort. Foods high in added sugar, such as pastries, provide fewer vitamins, minerals and protein relative to their calorie content, making it helpful to prioritise more nutrient-dense options. Fried and greasy foods, including fries, burgers and fried chicken, may worsen nausea, bloating and acid reflux, so grilled, baked or air-fried alternatives are suggested.
In 2026, more than 6.3% of households in Great Britain include at least one person using a GLP-1 medication.
