Saxenda for Weight Loss


About Saxenda

Saxenda (GLP-1 injection)

Saxenda (Liraglutide) is a medication for weight management purposes in adults. It is a glucagon-like peptide-1 (GLP-1) receptor agonist that acts on GLP-1 receptors in brain cells to increase the feeling of fullness and satiety, and, therefore, further suppress appetite. Although this drug is approved in the U.S. and Europe, it is not approved by the Ministry of Health, Labour and Welfare of Japan so it is not indicated for Relief Systems for Adverse Drug Reactions if there are any severe side effects that occur after using the medicine.

Body weight loss rate

In a study of 3731 obese individuals injected with Saxenda versus placebo for 56 weeks (approximately 13 months), 92% of patients injected with Saxenda lost an average of 8.4 kg (2.8 kg for placebo) of body weight.

Percentage of weight loss>5%>10%>15%
Percentage of patients63.2%33.1%14.4%

※ If your body weight loss is less than 3% after 4 months, discontinuation of treatment should be considered.

Treatment duration and body weight change after discontinuation

The recommended duration of treatment is 4-13 months, but long-term treatment is also possible. After discontinuation of Saxenda injection, appetite returns to normal and body weight may regain easily. It is important to combine diet change and exercise to create a habit for long term body weight control.

Directions for use and storage

  • Store unused Saxenda in a refrigerator but please avoid freezing it. Used Saxenda should be used within 30 days at room temperature (2-30°C), avoiding exposure to sunlight. You may continue to store it in the refrigerator after use.
  • Inject once a day at the same time subcutaneously at the abdomen, thigh, or upper arm before breakfast. Do not inject into a muscle or vein. Please be sure to read the attached procedure manual and the video (Click here to watch.) and follow the instructions for use.
  • Start with 0.6 mg daily to get used to the side effects, then increase by 0.6 mg every week up to a maximum of 3.0 mg. If the effect is significant or side effects such as nausea persist, do not increase the dose and continue at the same dose.
 First weekSecond weekThird weekFourth weekAfter 5th week
Daily dose0.6mg1.2mg1.8mg2.4mg3.0mg
Saxenda Dosage

Injection method (video)

For the method of injecting Saxenda, please refer to the following video.

If you miss a dose of Saxenda injection

  • If you missed Saxenda injection for less than 12 hours, inject the missed dose as soon as possible, and continue the next dose of Saxenda at the scheduled time.
  • If the missed Saxenda injection for more than 12 hours, please don’t inject the missed dose and skip Saxenda once. At the next scheduled injection time, inject the dose of the previous (missed) dose. Please do not inject double doses at once.
  • If you stop Saxenda injection for more than 3 days, please restart with 0.6 mg, as nausea and other symptoms are more likely to occur when resuming.

Side effects of Saxenda

side effect>10%1~10%0.1~1%0.01~0.1%
Immune systemAnaphylaxis
Metabolism, Nutritionlow level of blood sugardehydration, high cholesterol
Nerve systemheadachedizziness, impaired taste
Cardiovascularlow blood pressuretachycardia
Gastrointestinalnausea, vomiting, diarrhea, constipationthirsty, indigestion, gastritis, GERD, upper abdominal pain, abdominal distension, belchpancreatitis, delayed stomach, emptying
Liver, bile ductsGall stonecholangitis
KidneyAcute renal failure, Renal function impairment
General(Injection site)redness, rash, pain, internal bleeding, induration, etc.
powerless, malaise
feel sick
Blood testElevated level of amylase or lipaseanemia, Elevated level of liver function tests
  • Gastrointestinal symptoms: Nausea, vomiting, diarrhea, and constipation are the most common side effects. Most are mild to moderate and transient. The symptoms subside with continued treatment.
  • Hypoglycemia (low blood sugar): No severe hypoglycemia has been reported in patients without type 2 diabetes; hypoglycemic symptoms have been reported in 1.6% of patients (1.1% placebo). If you experience strong hunger, cold sweats, tremors, palpitations, or fever, take 10g of sugar or 100mL of juice containing sugar and rest. Please make sure that no hypoglycemic symptoms occur before driving a car, operating machinery, or working at height.
  • Pancreatitis (inflammation of pancreas), cholelithiasis(gallstones), cholecystitis (inflammation of gallbladder): If symptoms such as severe abdominal pain, back pain, vomiting, or fever occur, seek medical attention immediately. Removal of the gallbladder might be necessary and it might be fatal if untreated. Cholelithiasis can cause abdominal pain at the night after a greasy meal or overeating. In acute pancreatitis caused by gallstones, the pain begins suddenly and is maximal within minutes. Elevated amylase and lipase are not predictive of the development of pancreatitis, but they are diagnostic indicators when symptoms are present.
  • Dehydration and renal dysfunction: Renal failure and renal dysfunction can occur from dehydration related to gastrointestinal side effects such as diarrhea and vomiting. When diarrhea or vomiting occurs, be sure to keep hydrated.
  • Anaphylactic shock and angioedema: An excessive immune response (allergic reaction) may cause symptoms such as decreased blood pressure, fainting, swelling of the face, lips, and skin, rash, and difficulty breathing due to edema of the airways. If anaphylactic symptoms occur, call an ambulance immediately because emergent treatment at a hospital is necessary.
  • Intestinal obstruction (frequency unclear): Discontinue use and seek medical attention if severe constipation, abdominal distention, persistent abdominal pain, vomiting, or other abnormalities are observed.
  • Depression and suicide attempts: Although the causal relationship is unknown, anxiety, weakness, difficulty concentrating, depression, irritability, mood swings, and suicidal thoughts have been reported with 0.3% patients with Saxenda treatment compared to 0.1% in placebo group. If symptoms occur, discontinue the medication and consult your doctor.
  • Heart conduction disorders: Clinical studies have reported that 0.3% of patients experienced first degree atrioventricular block, right bundle branch block, or left bundle branch block, but the causal relationship with Saxenda is unknown.
  • Thyroid disorders: Goiter has been reported in a study in patients with type 2 diabetes. Please be sure to consult your doctor if you experience symptoms such as swelling or lumps in the thyroid gland (on the front side of the neck, below the throat). Non-fatal thyroid C-cell tumors (medullary thyroid carcinoma) have been reported in a 2-year carcinogenicity study in rats and mice. Papillary thyroid carcinoma (0.2%) has also been reported in Saxenda clinical studies.
  • Breast cancer: Clinical trials have reported breast cancer 0.2% in placebo vs. 0.7% in Saxenda treatment group, but the number of cases is small and a causal relationship has not been proven. Subsequent studies have also found no association between Saxenda and risk of breast cancer.
  • Colorectal neoplasms: Benign colorectal neoplasms have been reported 0.4% in placebo vs. 0.6% in Saxenda treatment group, and malignant colorectal neoplasms (colorectal cancer) in 0.1% placebo vs. 0.2% Saxenda, but the number of cases is small and the causal relationship is unknown.
  • Pancreatic cancer: pancreatic cancer has been reported, but the causal relationship with Saxenda is unknown.

Interactions with other drugs and alcohol

If you suffer from persistent diarrhea or vomiting during Saxenda treatment, the efficacy of warfarin may be impaired. Severe hypoglycemia has been reported when combing Saxenda with insulin and other diabetes medications. Although safety with other anti-obesity drugs and diet herbs has not been established, there is no evidence showed interactions between Saxenda and Orlistat (Xenical).

Although there is no direct interaction with alcohol, excessive alcohol consumption inhibits glycogen production and gluconeogenesis in the liver and can cause hypoglycemia. Excessive alcohol consumption should be avoided while using Saxenda.

Precautions during travelling

  • In most cases, a medical certificate is not required for domestic flights but we still can provide it in case you need it. Please note that a medical certificate in Japanese will cost \3,300 (tax included) and a medical certificate in English will cost \5,500 (tax included).
  • Please inject Saxenda at the same time as the scheduled injection time when you were in Japan, even if there is a time difference. If the scheduled injection time in Japan falls on your bedtime during travelling, please inject before bedtime or upon waking up, and return to the original scheduled injection time upon your return to Japan.

Saxenda and pregnancy

Saxenda cannot be used during pregnancy or breast feeding. Due to the lack of safety data, both men and women must use contraception during treatment and discontinue use one month before start planning to be pregnant.

Who cannot use Saxenda

  • Patients under 18 years of age or over 75 years of age.
  • Patients with diabetes, pancreatitis, cholelithiasis, cholecystitis, severe renal or hepatic dysfunction.
  • Patients with a history of abdominal surgery or bowel obstruction.
  • Patients with eating disorders, BMI less than 18.5, body fat percentage less than 15% for men and 25% for women.
  • Patients with obesity caused by endocrine disorders or drugs such as steroids.
  • Patients with thyroid disease or a family history of multiple endocrine neoplasia type 2.
  • Those who are pregnant or under breast feeding.
  • Patients with depression or suicide attempts.
  • Those who are allergic to disodium hydrogen phosphate di-hydrate, propylene glycol, phenol

Fees of Saxenda

Fees (Tax included)
Saxenda (18mg)1 injection pen (18mg/3mL)
ExaminationsBlood test (only when necessary) ¥3,982
Urine test (female on the first visit only) ¥1,056
Others70 needles ¥2,860
100 alcohol cotton swabs ¥660
Needle disposal container (disposal fee included) ¥440
Anti-nausea medicine for 10 days ¥660

※ Consultation fee(first visit ¥3,850、repeat visit ¥1,650) will be charged other than the prescription fee.

※ Blood tests (¥3,982) are required at the first visit, one month after Saxenda treatment, and once every 3 months thereafter for side effects check.

※ The needle disposal container is designed so that once the lid is closed, it cannot be opened. Please be sure to put the used needle in the container, and close the lid only before bringing it to our clinic. For needles prescribed by other hospitals, please take them to the medical institution that prescribed them for you. If you wish to dispose of needles at our clinic, please purchase our needle disposal container and bring it to our clinic in the container. However, there is a risk that the needle may penetrate and cause needlestick injuries (infection) so please do not use anything other than the designated container. Please note that a medical waste fee will be charged for the disposal of needles other than the needle disposal containers prescribed by our clinic.

※ Please note that even in the case of side effects, etc., returns and refunds are not accepted after prescription.

Number of Saxenda is needed for 30 days

Injection doseNumber of Saxenda is needed for 30 days
0.6mg1 injection pen
1.2mg2 injection pens
1.8mg3 injection pens
2.4mg4 injection pens
3.0mg5 injection pens

※ If you start with 0.6mg and increase the dose every week from 1.2mg → 1.8mg → 2.4mg → max 3.0mg, 3 injection pens of Saxenda are enough for 32 days.

Saxenda is a diet pill, not a diabetes medication

Diet treatment with Libersus (a GLP-1 drug to drink)