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Prescription requiredSun PharmaHormonal / Progestin (Gynecological)

Susten SR 300 Tablet

Progesterone (Natural Micronized) (300mg)

Susten SR 300 Tablet is used for luteal phase support in infertility/ART (IVF/ICSI), progesterone supplementation in progesterone deficiency, support of early pregnancy in threatened/recurrent miscarriage due to luteal insufficiency, secondary amenorrhea (as prescribed).

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026

₹652₹65.16 per tablet
Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Progesterone (Natural Micronized) (300mg)
Available variants: tablet 10 Tablet
Best price: ₹652 (₹65.16 per tablet)
Prescription: Required
Manufacturer: SUN PHARMA

Ordering notes

Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Same salt, lower price

Medicines with the same active ingredient and strength as Susten SR 300 Tablet.

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Susten SR 300 Tablet

tablet - 10 Tablet

₹652

₹65.16 per tablet

  • Profine SR 300MG Tab

    ARISTO PHARMACEUTICALS PVT LTD · tablet - 300 mg - 10 S · Rx

    ₹609

    ₹60.94 per tablet

Compare all substitutes
Same salt, different brand — what does that mean?

A substitute contains the same active ingredient (salt), in the same strength, as Susten SR 300 Tablet. The medicine inside is the same — the brand name, manufacturer and price are what differ.

All medicines sold in India, branded or generic, must meet the quality standards set by the national drug regulator (CDSCO). A lower price does not mean lower quality.

Please confirm with your doctor or pharmacist before switching brands — they will check that the strength and form match your prescription.

Composition of Susten SR 300 Tablet

Susten SR 300 Tablet contains Progesterone (Natural Micronized) (300mg). It belongs to the Progestogen (natural progesterone) class of medicines.

Uses of Susten SR 300 Tablet

  • Luteal phase support in infertility/ART (IVF/ICSI)
  • progesterone supplementation in progesterone deficiency
  • support of early pregnancy in threatened/recurrent miscarriage due to luteal insufficiency
  • secondary amenorrhea (as prescribed)

Key benefits

  • Supports implantation and early pregnancy
  • Helps maintain uterine lining
  • Provides luteal phase support in IVF/ART
  • Helps manage progesterone deficiency-related bleeding/amenorrhea
  • Reduces risk of miscarriage due to luteal insufficiency (when indicated)

How Susten SR 300 Tablet works

Progesterone is a natural female hormone that prepares and maintains the uterine lining (endometrium) for implantation and pregnancy. It stabilizes the endometrium, reduces uterine contractions, and supports the luteal phase when endogenous progesterone is inadequate.

How to take Susten SR 300 Tablet

Oral sustained-release tablet; take exactly as prescribed, preferably at the same time each day. Usually taken after food and often at bedtime (may cause drowsiness/dizziness). Swallow whole; do not crush or chew. Duration and dose depend on indication (luteal support/pregnancy support/amenorrhea).

Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.

Missed dose and overdose

If you miss a dose

If you miss a dose of SustEN SR 300 Tablet, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.

If you take too much

An overdose of this medicine may cause nausea, vomiting and withdrawal bleeding. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Susten SR 300 Tablet

Most side effects of Susten SR are mild and settle as the body adjusts. Reported side effects include:

  • Drowsiness
  • dizziness
  • headache
  • nausea
  • abdominal bloating
  • breast tenderness
  • fatigue
  • mood changes
  • vaginal spotting/irregular bleeding

Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.

Safety advice for Susten SR 300 Tablet

PregnancyConsult doctor (commonly prescribed for luteal support in pregnancy; use only on medical advice)
BreastfeedingBreast feeding CAUTION
AlcoholUse with caution (may increase dizziness/drowsiness)
DrivingDriving UNSAFE
KidneyKidney CONSULT YOUR DOCTOR
LiverLiver CAUTION
Habit formingNo

Warnings and precautions

May cause sleepiness/dizziness—avoid driving or alcohol if affected. Use with caution in liver disease, history of depression, epilepsy/migraine, diabetes, asthma, kidney/heart disease or fluid retention. Seek urgent care for signs of blood clot (leg pain/swelling, chest pain, breathlessness), severe headache/vision changes, jaundice, or heavy vaginal bleeding. Not for use in known/suspected breast or genital cancers, unexplained vaginal bleeding, active thromboembolic disorders, or severe liver disease unless specialist directs.

Do not take Susten SR if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for people with a history of blood clots, certain hormone-sensitive cancers, or active liver disease. Several are contraindicated in pregnancy.

Interactions with other medicines

CYP3A4 inducers may reduce effect (rifampicin, rifabutin, carbamazepine, phenytoin, phenobarbital, primidone, St John’s wort); CYP3A4 inhibitors may increase levels (ketoconazole/itraconazole, clarithromycin/erythromycin, ritonavir); additive sedation with alcohol, benzodiazepines, opioids, antihistamines; may affect glycemic control in diabetics (monitor).

How to store Susten SR 300 Tablet

Store below 25°C, protected from moisture and light. Keep in original blister pack and out of reach of children.

Expert advice for Susten SR 300 Tablet

SustEN SR 300 Tablet may also be used in the treatment of problems related to the menstrual period, such as amenorrhea (absence of periods). It also helps in the maintenance of pregnancy in women who are at higher risk of miscarriage. It should be taken with food. It may cause sleepiness or drowsiness. If this happens to you, do not drive or use machinery.

Manufacturer and class

Manufacturer:
SUN PHARMA
Therapeutic class:
Hormonal / Progestin (Gynecological)
Drug class:
Progestogen (natural progesterone)
Chemical class:
Gluco/mineralocorticoids, progestogin derivative

Substitutes for Susten SR 300 Tablet

Medicines with the same active ingredient (Progesterone (Natural Micronized) (300mg)). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Susten SR 300 Tablet
Susten 300 mg CapsuleSUN PHARMAcapsule · 10`S₹55315% cheaper
Profine SR 300 mg TabletARISTO PHARMACEUTICALS PVT LTDtablet · 10`S₹6096% cheaper
Gestofit 300 SR TabletALEMBIC PHARMAtablet · 10`S₹6804% more
Lupigest SR 300 mg TabletLUPIN LABtablet · 10`S₹83528% more
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Susten SR 300 Tablet FAQs

What is Susten SR 300 Tablet used for?
Susten SR 300 Tablet is commonly used for Luteal phase support in infertility/ART (IVF/ICSI), progesterone supplementation in progesterone deficiency, support of early pregnancy in threatened/recurrent miscarriage due to luteal insufficiency, secondary amenorrhea (as prescribed). Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Susten SR 300 Tablet?
Susten SR 300 Tablet contains Progesterone (Natural Micronized) (300mg). If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Susten SR 300 Tablet?
Oral sustained-release tablet; take exactly as prescribed, preferably at the same time each day. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Susten SR 300 Tablet work?
Progesterone is a natural female hormone that prepares and maintains the uterine lining (endometrium) for implantation and pregnancy.
Is Susten SR 300 Tablet a prescription medicine?
Yes. Susten SR 300 Tablet is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Susten SR 300 Tablet?
The side effects reported most often with Susten SR are Drowsiness, dizziness, headache, nausea, abdominal bloating. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Susten SR 300 Tablet be taken during pregnancy?
Consult doctor (commonly prescribed for luteal support in pregnancy; use only on medical advice) Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Susten SR.
Can I drink alcohol while taking Susten SR 300 Tablet?
Use with caution (may increase dizziness/drowsiness)
What if I miss a dose of Susten SR 300 Tablet?
If you miss a dose of SustEN SR 300 Tablet, take it as soon as possible.
Is Susten SR 300 Tablet habit forming?
No. Susten SR 300 Tablet is not known to be habit forming when taken as prescribed.
Is there a cheaper substitute for Susten SR 300 Tablet?
Susten 300 mg Capsule has the same active ingredient and strength and is listed from ₹553 on PingMeDoc Pharmacy. Ask your doctor or pharmacist before switching brands, the salt is the same, but excipients and release profiles can differ.
How much does Susten SR 300 Tablet cost on PingMeDoc Pharmacy?
Susten SR 300 Tablet starts at ₹652 on PingMeDoc Pharmacy. Available in tablet 10 Tablet. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Susten SR 300 Tablet?
Susten SR 300 Tablet is manufactured by SUN PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Susten SR 300 Tablet delivered?
Susten SR 300 Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.

Susten SR 300 Tablet, Quick facts

Salt
Progesterone (Natural Micronized) (300mg)
Form
tablet
Best price
₹652 (₹65.16 per tablet)
Prescription
Required (Rx)
Brand
SUN PHARMA
Manufacturer
SUN PHARMA
Therapeutic class
Hormonal / Progestin (Gynecological)
Drug class
Progestogen (natural progesterone)
Chemical class
Gluco/mineralocorticoids, progestogin derivative
Action class
Natural Progesterone
Habit forming
No
Variants
tablet 10 Tablet
Delivery
Standard across India

References

The information on Susten SR 300 Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.

  1. Manufacturer labeling/pack insert, established medical literature on progesterone
  2. Indian prescribing information and clinical guidelines for luteal phase support
  3. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  4. National List of Essential Medicines (NLEM) 2022, Government of India.
  5. Manufacturer's package insert / prescribing information for Susten SR 300 Tablet.
  6. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

Next steps

Safety disclaimer

Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.