Susten

Capsule/tablet · Sun Pharma
PRESCRIPTION MEDICINE

Susten is a capsule/tablet made by Sun Pharma that contains Progesterone 100 to 400 mg (several strengths). Progesterone is a hormone: supports pregnancy in women at risk of miscarriage and is used in fertility treatment.

Ingredient (salt)Amount
Progesterone100 to 400 mg (several strengths)

What it is used for

Supports pregnancy in women at risk of miscarriage and is used in fertility treatment.

How it works

The natural pregnancy-supporting hormone; used in fertility treatment, to prevent some early births and in menopause hormone therapy.

How to take it

Capsules or pessaries, usually at bedtime, exactly as prescribed; injections given by a health worker.

Common side effects

  • Drowsiness
  • Breast tenderness
  • Bloating
  • Headache

Get medical help straight away if

  • Pain or swelling in one leg, chest pain or breathlessness
  • Heavy bleeding
  • Severe headache

Be careful

Can cause drowsiness; use only as prescribed.

Other medicines and interactions

Rifampicin, carbamazepine and phenytoin reduce its effect.

Pregnancy and breastfeeding

Prescribed in pregnancy for specific reasons only by your doctor.

Common questions

What is Susten?

Susten is a capsule/tablet by Sun Pharma containing Progesterone 100 to 400 mg (several strengths).

What is Susten used for?

Supports pregnancy in women at risk of miscarriage and is used in fertility treatment.

How should I take Susten?

Capsules or pessaries, usually at bedtime, exactly as prescribed; injections given by a health worker. Always follow the dose your doctor or the pack gives.

What are the side effects of Susten?

Common side effects include: Drowsiness, breast tenderness, bloating, headache. Get medical help straight away for: Pain or swelling in one leg, chest pain or breathlessness, heavy bleeding, severe headache.

Does Susten need a prescription?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Can I take Susten in pregnancy or while breastfeeding?

Prescribed in pregnancy for specific reasons only by your doctor.

What are the substitutes for Susten?

We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

🔎 Search another medicine

For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.