What Is Sidegra? Thai Sildenafil 50 vs 100 mg
10/07/2026 · ทีมงาน APEXMAN
What is Sidegra?
Sidegra is sildenafil made by Thailand's Government Pharmaceutical Organization (GPO) — the same active ingredient as Viagra, used to treat erectile dysfunction (ED) at a more accessible price than the original brand. That is why it is often called the "Thai Viagra".
- Two strengths: 50 mg (the standard starting dose) and 100 mg
- Works within ~30-60 minutes and lasts around 4-6 hours, like any sildenafil
- Made to GPO manufacturing standards with a traceable source
Last updated: July 2026 · Sources: NHS and MedlinePlus
Sidegra — Thailand's own Viagra, made by the GPO
Sidegra is a Thai generic of sildenafil, produced by the Government Pharmaceutical Organization (GPO) and on the market since 2013, after Viagra's patent expired. The goal was simple: give Thai men access to a genuine ED medicine at a fair price, instead of gambling on counterfeit pills from the grey market.
Because the active ingredient is the same sildenafil, its effectiveness at equal doses is equivalent to the original Viagra — what differs is the manufacturer, the tablet's appearance, and the price.
Sidegra 50 mg vs 100 mg — which strength should you pick?
The short answer: if you are new to it, always start at 50 mg.
| Strength | Who it suits | Notes |
|---|---|---|
| Sidegra 50 mg | First-time users, and anyone who already responds well | The international standard starting dose, with fewer side effects |
| Sidegra 100 mg | Those who used 50 mg correctly but need more effect | The maximum single dose — do not start here on your own |
The key principle: a bigger dose does not mean "better sex" — it means higher blood levels of the drug, which raises both the chance of response and the chance of side effects such as headache, flushing and a blocked nose. Adjust the dose step by step under the guidance of a doctor or pharmacist, not by feel.
How to take Sidegra for the best results
- Take it about 1 hour before sex, with plain water
- It works faster on an empty stomach — a fatty or heavy meal can delay absorption by an hour or more
- You still need sexual stimulation for it to work — Sidegra is not an aphrodisiac
- No more than once a day, and never take a second dose the same day even if it feels like it did not work
- Avoid heavy drinking and grapefruit juice
Side effects and contraindications
The same as every sildenafil brand: the common ones are headache, facial flushing, blocked nose, indigestion, dizziness and a temporary blue tint to vision, which usually pass within a few hours.
Absolute contraindication: never combine with nitrate medicines (under-the-tongue heart tablets) — blood pressure can drop dangerously. Anyone with heart disease, abnormal blood pressure, severe liver or kidney disease, or a previous reaction to sildenafil should talk to a doctor before use. If you get a painful erection lasting over 4 hours, or sudden loss of vision or hearing, see a doctor immediately.
Where to buy Sidegra — and how to spot the real thing
Genuine Sidegra is sold only through licensed pharmacies and verifiable channels. What to check: a sharply printed box naming the Government Pharmaceutical Organization, an intact blister pack, and a lot number and expiry date that match on both box and blister. Because Sidegra is one of the most searched-for ED medicines in Thailand, the market is full of imitations — especially from sellers who will not say where their stock comes from. An unusually low price is the clearest red flag.
At APEXMAN we source genuine Sidegra in every lot, ship fast nationwide, and use discreet packaging with no product names on the box.
📖 Read more: What Is Viagra (Sildenafil)? Full Guide · How to Fix Erectile Dysfunction (ED)
Frequently asked questions
What is Sidegra 100 mg — is it stronger than Viagra?
Sidegra 100 mg is sildenafil at 100 mg — identical to Viagra 100 mg as far as the active ingredient goes. It is not "stronger": strength depends on the dose in mg, not the brand.
How long does Sidegra last?
The active window is roughly 4-6 hours after taking it, with peak levels in the first 1-2 hours. That means the period when your body can respond to stimulation — not a continuous erection the whole time.
Sidegra or Kamagra — which is better?
Same active ingredient (sildenafil) — Sidegra is a Thai-made tablet, while Kamagra comes from India in a wider range of formats such as jelly, effervescent and chewable tablets. Choose by the format you find convenient and a source you trust.
Can women take Sidegra?
Sidegra is approved for men only. Women interested in sildenafil should always talk to a doctor first — there are products marketed specifically for women, such as Lovegra, but the evidence for use in women is still limited.
This article is for general education only. It is not a diagnosis or personalised medical advice. All medicines have contraindications and side effects — please consult a doctor or pharmacist before use.