Apetamin Results & Side Effects: What to Expect (and How to Keep the Weight)

Apetamin is one of the most searched weight gain products online, and the questions are always the same: What results can I expect? How fast does it work? What are the side effects? And will the weight stay? Here's an honest, straight-to-the-point guide.

What is Apetamin?

Apetamin is an appetite-stimulating syrup (also sold as tablets and capsules) made overseas. Its main active ingredient is cyproheptadine, an antihistamine that has a well-known side effect: it increases appetite. Apetamin syrup also contains lysine and vitamins.

Important to know: Apetamin is not approved by the U.S. FDA, and in the United States cyproheptadine is a prescription medication. That's why it's worth talking to your doctor before using any cyproheptadine-based product.

Apetamin results: what to expect

Apetamin doesn't add weight by itself. It makes you hungrier, and the extra food you eat is what produces the results. That's why results vary so much from person to person.

• First few days: many people notice a bigger appetite and feel sleepy, especially in the first week.
• First 2–4 weeks: people who eat more consistently often see the scale move. Some of the early gain is water and stored carbohydrates.
• Longer term: lasting "before and after" results come from steady eating habits plus strength training, which builds shape in the hips, thighs and glutes.

If you take an appetite booster but don't change what you eat, you'll likely see little to no change.

How long does Apetamin take to work?

The appetite effect is usually noticeable within the first several days. Visible weight changes depend on how much extra you eat each day, and typically take a few weeks of consistency.

Apetamin side effects

Because its active ingredient is an antihistamine, the most commonly reported side effects include:

• Drowsiness and fatigue
• Dry mouth
• Dizziness
• Nausea or stomach upset
• Blurred vision

Don't drive or operate machinery if you feel drowsy. Cyproheptadine isn't recommended for people who are pregnant or breastfeeding, have glaucoma, certain heart, liver or kidney conditions, urinary retention, or take certain medications (including some antidepressants). Your doctor or pharmacist can tell you whether it's safe for you. Stop using it and get medical help if you have a severe reaction.

Will the weight stay after you stop Apetamin?

This is the big one. When you stop, your appetite returns to normal. If your meals shrink back to what they were before, the weight usually comes off slowly. If you keep eating the same amount, it can stay.

The key habits are eating on a schedule (3 meals and 2–3 snacks), choosing calorie-dense foods, drinking a high-calorie shake between meals, getting protein at every meal and strength training 3 times a week. We break them all down step by step in How to Maintain Weight Gain: 9 Ways to Keep the Weight On.

Apetamin alternatives

If you'd rather not use a cyproheptadine product, there are other ways to build appetite and gain weight. Food-first strategies can work just as well over time. Read our guides to Apetamin alternatives and how to gain weight fast, or explore our weight gain shakes and foods.

Frequently asked questions

Does Apetamin really work?

It can increase appetite, which helps some people eat more and gain weight. The results depend on how much more you actually eat.

Does Apetamin make your butt and hips bigger?

No supplement can choose where your body adds weight. Genetics decide most of it. Strength training like squats and hip thrusts is the best way to build shape in your hips and glutes.

Why do I feel so sleepy on Apetamin?

Drowsiness is a common side effect of cyproheptadine, the antihistamine in Apetamin. Talk to your doctor if it doesn't improve or affects your daily life.

Is Apetamin legal in the U.S.?

Apetamin isn't FDA-approved, and the FDA has warned consumers about it because cyproheptadine is prescription-only in the U.S. Speak with a healthcare provider before using it.

This article is for general information only and isn't medical advice. Talk to your doctor before starting or stopping any supplement or medication, especially if you are pregnant, nursing, have a medical condition or take other medications. Results vary from person to person.